Natural fourth-grade composition

In our daily study, work and life, we often come into contact with composition, which requires a complete text structure and must avoid an endless composition. So, how to write a composition? The following is my composition for the fourth grade of nature, I hope it will help you.

Nature composition 1 After reading the text "Enlightenment from Nature", we found that nature left us a lot of beneficial enlightenment. For example, the flight speed of the plane is constantly improving, and the wings are often broken due to violent shaking, resulting in the tragic accident of plane crash and death. Only then did people find a slightly heavier point at the end of dragonfly wings, and scientists invented the key to prevent the wings from shaking violently on the plane. The speed of the ship is always not fast, and people invented streamlined ships according to the characteristics of whales.

As long as we pay attention to the things around us, it will bring us a lot of useful enlightenment.

In rural orchards, we often find that pests often get into fruit trees or some mature fruits, and farmers can only spray pesticides on fruit trees in large quantities. But the consequence is that people who eat excessive fruits will be poisoned to death. I often wonder: Why can't scientists develop a portable pest control machine?

In the pest control machine, we can install a computer chip and then install two buttons on the handle, one is red and the other is green. Just press the red button on the handle and a long steel pipe like a woodpecker's mouth will come out automatically. It can automatically detect the diseased tree, make a small hole in it, and then the steel pipe will automatically go in and hook out the pests. If it is a termite, press the green button and a tongue similar to an anteater will come out. A sticky tongue will stick to termites, and termites will not easily escape from its tongue. In this way, the pest control machine can accurately catch pests.

From the predation of woodpeckers and anteaters, I have been inspired by a new kind and innovated by nature.

Fireflies are particularly bright at night. They wore colorful clothes and shuttled through the grass. The clothes are also coated with phosphor! Red, orange, yellow, green, blue and purple are countless, like a rainbow!

It helps people find their way home at night and shows them "singing and dancing" at night. Really kind and "cute"!

"sex! Hey! " The children picked up the net to catch fireflies, but they couldn't catch them. They were sweating with fatigue. "Oh, I'm so tired that I can't catch them," a little boy wiped his sweat with a paper towel. "Go get them!" Say that finish, he sat on the grass.

The grass is so green, like a big green carpet! The grass is loose and soft, and sitting on it makes people feel comfortable! I really want to sit on it, lie on it and have a comfortable sleep every day!

Look, there are many beautiful flowers on the grass, red, orange, yellow, green, blue and purple. How beautiful! Its smell is so fragrant that people are intoxicated in the world of flowers!

The sky is dark blue, and Brother Baiyun doesn't know where to hide. We seem to be playing hide and seek! Sister Moon is sometimes round, sometimes curved, and seems to be angry when she is round. Brother Baiyun must be mistaken. I seem to be very happy when I bend over. Brother Sun must have told her jokes!

Look, the owl in that tree, with big eyes, is looking for a sneaky little mouse! Look, the little mouse is out. It is agile, but in the end it can't escape from the palm of the owl's hand.

Nature is really wonderful! Have you paid attention to it? Have you observed it with your heart? If not, watch it while it's still early!

Nature is rich and colorful, and there are many inspirations and truths that books can't learn. As long as you study with an open mind, you will certainly get it.

I still remember one morning when the sun was shining and there were no clouds in Wan Li. Fish are swimming, birds are singing and butterflies are dancing. The crystal dew slipped from cobwebs and eaves and flowed into the clear stream. "Ding-dong" and "Ding-dong" are slowly painted into touching songs and wake up in our sleep.

Today, when I was busy under the maple tree in my small garden, I met it-a new life. The first time I saw it, I couldn't help admiring: What a tenacious little life it is! I looked carefully again-a green bud grew in the sparse soil in the flowerpot. Judging from its thin stems and leaves, it has never seen bright sunshine, tasted delicious rain and dew since its birth, and no one pays attention to it. In a dark and humid corner, it grows so sturdily and pays much effort! This reminds me of the poem of the great poet Bai Juyi: "The fire can't burn out, and the spring breeze blows high." I carefully held it in my hand and planted it in a field in front of the small courtyard, hoping that it would grow, blossom and bear fruit. ...

The next day, I came to the field to have a look, and found that it was smaller than yesterday, and I suddenly looked puzzled. It turned out that the new bud was pinned down by a stone again, but it didn't give up at all. It survived through the cracks in the stone and struggled to climb up. I was moved by its perseverance again, so I moved the stone and wanted to help it. I saw its curved roots grow upward. Although long and ugly, he survived tenaciously. Xiao Xinya's persistent and tenacious growth spirit is worth learning!

Nature is a good teacher for human beings. We should study as hard as Xiaoxinya, and we must stick to it, no matter how hard it is, we can't give up!

Learn from nature! You will find a lot.

In the morning, with a happy mood, I walked out of the house with light steps to find a wonderful sound world.

"Ding Dong Ding Dong-!" What kind of music is this? It is so wonderful that it surpasses all the music in the world. I walked with the beautiful sound, and I walked into the forest. Suddenly, the space in front of me expanded, huh? How did I become a small animal-ant. I walked on, and suddenly a gust of wind rustled the leaves as if to welcome me. I walked on and slowed down. Why is it so busy there? My curiosity drove me to find the answer. Oh! So there is a concert here! Then I must listen. I found a seat at random and watched the concert. Well, cicadas are on stage. He waved his hand and saw many animals cheering and shouting. Cicada began to sing, only to see it playing the violin. It plays a lyric serenade,

It seems to let us swim in the boundless ocean of notes. Cricket came, singing a nice song with a microphone, let's all clap our hands and applaud. At this moment, Brother Lei came. It beats gongs and drums "dong! Hey! " Scared everyone away. When Brother Lei saw that no one was listening, he said, "Wow-wow-!" I began to cry. Ah! It was raining, so I quickly found a leaf to wear on my head. The rain slapped my umbrella and made a beautiful sound, "Tintin-Knock!" It's wonderful! The place where I stood became a good place to watch the rain.

The rain is getting smaller and smaller, and the beads of rain on the leaves are dripping in the puddle on the side of the road, making an unusually crisp sound:

"Ding-dong! Hey! "

It's like a Shan Yu aftertaste.

The rain stopped, several dogs barked in the mountains, and a group of returning birds swept over Yunling. I'm going home. When I was going home, suddenly a car came towards me, ah! Help!

Suddenly, I woke up from my dream. Alas, this is just a dream! However, how I hope this is true, so that I can always immerse myself in the wonderful sound world!

Man has got a lot of inspiration from nature.

For example, people have successfully developed an electronic frog eye based on the visual principle of frog eye. This kind of electronic frog eye can accurately identify objects with specific shapes like real frog eyes; According to the principle of bat ultrasonic locator, people also copied "Pathfinder" for the blind. This pathfinder is equipped with an ultrasonic transmitter, which blind people can use to find telephone poles, steps, people on bridges, etc. Nowadays, "ultrasonic glasses" with similar functions have also been made?

The invention of mankind-inspired by animals-ships and submarines came from people's imitation of fish and dolphins. Scientists have made the first batch of gas masks in the world according to the unique drug detection ability of wild boar nose. The rocket takes off by using the recoil principle of jellyfish and squid. Researchers have developed many military camouflage equipment for the army by studying the chameleon's color-changing ability. Scientists studied frog eyes and invented electronic frog eyes. The US Air Force has developed a miniature thermal sensor through the "hot eye" function of poisonous snakes. Humans also designed a toad ram (hāng) based on the principle of leapfrog. Humans imitate the highly sensitive sense of smell of police dogs and create "electronic police dogs" for investigation.

Bionic and high-tech modern radar, a radio positioning and ranging device: scientists found that bat monsters rely not on eyes, but on an echo positioning system consisting of mouth, throat and ears. Because bat magic emits ultrasonic waves when flying, it can also detect the ultrasonic waves reflected by obstacles. Based on this, scientists have designed a modern radar-a radio positioning and ranging device? By studying the tiny swimming resistance of dolphins, scientists invented artificial dolphin skin which can improve the speed of torpedoes. And a wheeled vehicle (jumping machine) that imitates kangaroo's movement in the desert.

Inspired by the Penguin King, scientists from the Institute of Zoology of the former Soviet Academy of Sciences designed a new type of car-inspired composition firefly.

-"Penguin King" brand polar off-road vehicle. The wide bottom of this kind of car is directly attached to the snow surface, and it can be propelled with a wheel spoon, and the driving speed can reach 50 kilometers per hour?

This is an inspiration from nature. Inspiration from the composition of fireflies in nature

Nature is interesting and ever-changing and worth thinking about and experiencing.

I remember the summer vacation the year before last, my parents and I went to my grandfather's house in the country to play. It happened that my brother and sister were there, too. We discussed where to play. After a while, we decided to play in the fields for a while.

After I told my parents and grandparents, my parents immediately said, "No! The wild is too dangerous to go. " Grandpa said to his parents, "Let Xin Wei go." But dad just wouldn't listen, and grandpa's face immediately became like the Monkey King's face-it changed as soon as he said it, and it immediately turned sunny and cloudy, saying, "Are you my son?" If so, let Rose play for a while. " Dad couldn't admit that he was not grandpa's son, so he had to let me go.

My brother and sister and I picked flowers for a while, made wreaths for a while, and talked and laughed for a while. While having fun, my sister suddenly turned pale. My brother and I thought my sister was ill. My brother asked anxiously, "Sister, what's wrong with you?" I only heard my sister pointing to the grass and saying intermittently because of fear, "There are ... there are snakes." Our eyes followed her hand and I saw a snake lying there. I asked strangely, "The snake is dead. Who will go and see? " My brother immediately replied, "I won't go." My sister also said, "I won't go." Then both of them pointed at me: "Go!" Well, I'll go. I am brave enough to move forward step by step like a brave soldier going to the battlefield. When I got there, I found it was snakeskin. I proudly said to them, "coward, that's snakeskin!" " "However, why do snakes peel! I asked grandpa with questions. Grandpa said: "When the snake grows up, the snake skin won't hold, and then it will peel off and grow new skin. "oh! I see. I see: when the snake grows up, the original skin can't hold, and the snake will peel it off.

There are many interesting phenomena in nature. Use your eyes to find out.

Nature's fourth grade composition 7 Nature is a painter, and he painted us all the waters of Qian Shan; Nature is a musician who plays many wonderful sounds for us. Nature is a philosopher and can tell us a lot. No, today, nature taught me a truth.

I finished my homework and am going downstairs to play. Then my mother said, "won't you work harder?" Help me do some housework, learn from hardworking ants, go downstairs to observe and learn skills from them. "I ran downstairs as fast as I could.

I found the ant nest, took out a biscuit, put it near the ant nest, and then squatted beside it to observe quietly. I saw a small head in the ant nest. I look around. When I saw my biscuit, it jumped out of the nest and ran to the biscuit quickly. It wandered around the biscuits as if at a loss. It ran behind the biscuit, pedaled with its hind legs and pushed the biscuit with its front legs, trying to move forward. Biscuits stand in front of them like a mountain, motionless. The ant gave up pushing cookies and went home alone. It circled around the biscuit several times and ran home by itself. "Work hard" is obvious. When you see a problem, you shrink back! I was so angry that I was about to go home, only to find that the ants had just come out again, with a long queue that looked like a black dragon. They are distributed around the biscuits, and there are a few soldier ants around them, so as not to let any predators take away the food. A big ant ordered, shaking its tentacles, as if to say, "You go there, you go there, an ant comes out from there, go there …" Finally, ants were evenly distributed around the biscuits, and the ants were very strong and were lifted at once. "One two one, one two one", the conductor shook his head as if to say. I watched the ant move the food, intending to give it some difficulties. I sprinkled some soil on the ants and buried them. I saw a leg sticking out of the soil, two legs ... Finally, the ants all came out of the soil, tidied themselves up, picked up cookies, walked to the hole, divided the food into small pieces and moved into the hole.

My mind has been greatly shocked, and I feel that no matter how small my life is, as long as I work hard, unite and struggle, no matter how difficult it is, I will be knocked down by them.

Nature is like a book without words, full of endless mysteries. Students, let's hurry into nature, listen to the sounds of nature, appreciate the scenery of nature and explore the mysteries of nature!

In rural orchards, we often find pests getting into tree trunks and ripe fruits. In order to protect the fruit trees, farmers have to spray a lot of pesticides. What is the result? Not only is the cost high, but people eat it, and the pesticides that exceed the standard are scary. If pests are not killed in time, people have to cut down those "incurable" fruit trees. In modern rural areas, it is impossible for so many woodpeckers to help fruit trees see a doctor.

Nature has given people a lot of inspiration. Planes were invented according to dragonflies, and streamlined boats were invented after whales at the bottom of the sea. So I'm thinking: why don't we make a portable pest control machine by imitating the mouth of woodpecker and the tongue of anteater? In this pest control machine, we can install a computer chip, so that it can accurately detect diseased trees. Then, we can press a red button on the handle, and a pointed hooked steel pipe similar to a woodpecker's mouth will pop out from it. It can accurately make a tiny hole in a tree with pests, and then hook it out with a hooked steel pipe mouth. What about termites? Don't panic, we can put the steel pipe mouth in first, then press the green button, and an anteater-like tongue will pop out of it. As soon as the sticky long tongue "drills" into the hole, termites are easily and completely eliminated.

Nature will always bring us many unexpected revelations and endless touches. Let's keep an understanding of the mysteries of nature!

Nature is everywhere and the mystery remains unchanged. As long as we have a pair of bright eyes, we can find and use them one by one.

Why are there words on the apple?

In some supermarkets, we often see some fruits with words on them, such as "Congratulations on getting rich" and "Peace" ... Why are there words? This just uses the photosynthesis of plants. Plants use air, sunlight and nutrients for photosynthesis, which will become a kind of sugar and chlorophyll. If a tree has its back to the sun, its color will be very different. If you put the word on the sunny side of the apple, when it matures, the place covered by the word will fade, which is what we call the word on it.

Why can't gel pens write in space?

What pen should I use to write the report when the spaceship lands on the moon? Only two, pencils and space pens. Why is this? Can't a gel pen write? Gel pens can't be written, and there will be weightlessness in space. When writing a gel pen, the oil should be written through the tip of the pen, but under weightlessness, the oil will come up and may leak. The pencil is tightly clamped with wood, and no refill flies into the air; Space pen has a special device to fix the pen oil in one place, so it can also write.

Why can submarines dive and float?

Everyone knows about submarines, right? Why can it rise and fall in the water? That's using the principle of swim bladder. If there is no swim bladder, the fish must keep swimming to ensure that they will not sink too much. When you rise, you decorate the air in the swim bladder. On the contrary, there can be no air when you sink. The principle of submarine is the same, but it is filled with water. When it rises, it discharges water, and when it falls, it sucks in some seawater.

Nature is really a good friend of mankind! In order to benefit mankind, mankind has learned a lot from nature. For example, according to whales invented the ship, according to birds invented the plane ... we should protect nature and protect the ecological environment!

Nature's fourth grade composition 10 nature's revelation I understand from nature's revelation, although as long as we gently set foot on their lives, there will be no more. However, from ants, I have gained a valuable quality worthy of our human learning-unity and cooperation.

I remember once, when I was walking in front of my house, I suddenly saw a biscuit on the ground. There is a little ant standing next to the biscuit. I thought, what is this little ant doing? So I squatted down curiously and observed the little ant carefully. I saw him touch the biscuit with his tentacles first, but the biscuit didn't move at all. This move made me understand that it was going to lift this biscuit. I continued to observe that it tried to push the biscuit forward with its front foot, but the biscuit just didn't move. Finally, it struggled to carry the biscuit on its back, but it was too much for it once, and then it was put down again. Although the little ant didn't leave, it could be seen that it was disappointed. The little ant walked back and forth in front of the biscuit again, as if thinking about something, and then quietly left. I thought: this little ant must have given up, and I have nothing to see. Go home. Just as I got up to leave, I suddenly saw a large group of ants coming towards this biscuit, and it was the little ants who took the lead! Under the command of the little ants, the ants lined up in two rows on both sides of the biscuit, with the big ones on their backs and the small ones with tentacles. Finally, the biscuit was lifted. I have been watching cookies and ants disappear on the green grass.

Small ants have this spirit of perseverance, unity and mutual assistance, not to mention us? . Therefore, we should learn to unite and cooperate and help each other, instead of going it alone. This is my inspiration from the fact that ants move food. Let's remember Zweig's words-if all human work is worth doing and should be done well, we should concentrate on it.

Nature composition 1 1 Nature is wonderful. If you listen to its voice carefully, you will find great things. Let's go into nature together and listen to its voice!

Spring is the season when everything revives. I woke up one morning and heard a "crash, crash" sound outside the window. I quickly got dressed and ran out of the house. I found a very young and excellent music teacher, Nature, who sang the song "Spring Rain"! After the rain, the birds flew to the surrounding trees in droves to form a choir and began the chorus of the song "Spring after Rain". This song is so beautiful.

In summer, I went to Yehetang to see lotus flowers. Suddenly, thousands of frogs jumped out and jumped on the lotus leaf in groups of three or five. They turned around and found a cicada standing on the treetop behind me, gesturing to the frogs in the lotus pond. A few seconds later, I heard the frog sing a song, Happy Summer, Hello! "Song, I listened quietly. After a while, the frog stopped and the cicada began to sing the second half with her beautiful voice. The whole summer passed like this.

Autumn has come, leaves have fallen, and the whole world has turned golden yellow, which is very beautiful. I walked on the land covered with fallen leaves and made a crisp sound of "rustling, rustling". That night, I had a very beautiful dream: I sat on a stone and looked at the fields in the distance. The leaves suddenly made their own sounds, but they were very rhythmic: "sasha vujacic, rustling, rustling …". I woke up happy. This is the voice of nature.

I remember one time last year: on a hot summer vacation, my mother took me back to my hometown with great interest. As soon as we entered the house, you suddenly felt refreshed, surrounded by all kinds of flowers and trees, and a tall pomegranate tree stood in front of us, protecting its home like a brave soldier. Huh? What is glittering and translucent on that tree and shining in the sunset? Oh, it's a cute little spider weaving a web! I remember: the teacher told us to pay attention to the things around us, so I went to observe the spider internet bar today! I held my breath and stared at it. Before going to bed, I finally saw a perfect spider web. I couldn't help crying. "What a beautiful spider web!" "

In the middle of the night, I was awakened by the harsh thunder. I found that it was raining heavily outside at this time, and the rain beat the window violently. "ah! No, this little spider is finished. " I thought in horror.

At first light the next day, I hurried to the pomegranate tree and found that, as expected, the flawless spider web turned into two wet filaments, dripping with two or three drops of water. I saw the little spider shaking his head in frustration and staring at the sky. I see it in my eyes and it hurts in my heart. But the sight at night shocked me. This little spider actually reweaved a perfect spider web.

Seeing this, I was moved by the persistent spirit of the little spider, and I learned from it that everything can't be done by halves. We must work hard, work hard and work hard again to achieve final success.

Composition of Nature Grade 4 13 "Today's news is coming, today is our mother nature's birthday! Remember, it's not an outsider's birthday, it's Mother Nature's birthday! " Oh, this nagging Miss Crow started broadcasting news again, but the residents in the forest didn't talk about her, because today is indeed Mother Nature's birthday, and she is the closest mother to the forest residents.

Every year on Mother Nature's birthday, animals are very busy. Even the lazy pig is busy every day. Mother Bear and Mother Sheep made Mother Nature's favorite green apple cake. Some ingenious animals in Dashu Kindergarten made leaf paintings with leaves, and the animals in Qiushi Primary School made greeting cards one after another. In short, the forest is very busy.

The lark and the bird sang a happy birthday song together, and the song was melodious. Mother bear and mother sheep held their own green apple cakes, and then the animal residents rushed to give gifts. What about Mother Nature? Smile from ear to ear.

Finally, nature asked the animal residents what their wishes were. A timid rabbit trembled and said, "I only hope that humans will stop hurting our weak animals." Although I am a weak animal, I also have the right to live. "

"Yes, I moved three times because of human destruction." The golden monkey protested indignantly. "Even we are national first-class animals, and we are swallowed into the population in cages."

At this time, an ordinary grass spoke: "I feel speechless for living in such a harsh environment." Although I am a grass, I still have life. I don't want people to throw rubbish at me. "

Mother Nature closed her eyes and made a wish: "I hope that the children's wishes will come true, and I hope that human beings will admit their mistakes and put down the front knife that destroys nature!" Then blew out the candle.

Gratitude means that others help us enthusiastically. We thank him and repay him. There is a person who hugs us and nurtures us every day, which deserves our gratitude. He is natural!

"Twittering ..." This is the bird singing. The sweet singing makes people feel relaxed and happy, leaving all the troubles behind, leaving only peace. Nature will always be the home of people's quiet hearts.

Nature is like a great mother, inspiring and guiding our lives. The Wright brothers were very interested in flying animals. They carefully observed eagles and butterflies and invented the world's first manned space shuttle. My brother's plane stayed in the "sky" more than 3 meters high, staying 12 seconds and flying for 36 seconds. 5 meters, so that people can hope to complete their dream of flying as soon as possible. Later, all kinds of birds, dragonflies and other animals in nature inspired people a lot. Finally, people invented all kinds of new high-intelligence planes, which made a qualitative leap in science and technology in human history.

We should be grateful for the gift of nature. He works hard and always gives us the best. Cattle help people pull plows to prevent people from being stabbed when they step on sharp objects. Moreover, the strength of cattle is much greater than that of people, and plowing can achieve high efficiency. The cry of "Cleisthenes" of the old ox seems to show off his skills. I believe everyone knows that black and white cows are also a great hero of mankind. Thanks for its milk, whitening and nourishing the stomach.

Animals in nature have so many "achievements", do plants? Let's take a look together! We came to the lawn first, and the grass stuck out from our heads, green. The grass looks weak, but it is actually very powerful. Even if a thousand-pound boulder is pressed on it, it will still contradict, impact upwards and never look back until it comes out by itself. This persistent spirit is worth learning, infecting and inspiring thousands of people in Qian Qian.

Everyone should have a grateful heart in his heart and embrace our mother and nature like a child.

Nature's fourth-grade composition 15 Nature has given mankind a lot of inspiration and is the earliest "teacher" of mankind. History has given us many good examples. Because of the glow of fireflies, scientists invented fluorescent lamps; Inspired by horses running on the grassland, scientists invented cars; And because the turtle can rotate 360 degrees on chinemys reevesii's back, scientists invented the rotating chariot. ...

Recently, I also discovered some secrets of nature. On Saturday, I found a big caterpillar at home putting its ass in an ant hole. A thin ant bit the big green bug hard. However, the big green bug ruled out a rice-sized stool and said, "Little ant, you'd better give up." You're just arresting me now. You don't know what you can do. " But the ants still don't give up and continue to bite ... until the little ants are exhausted, the big caterpillar still looks like an anodyne. At this time, the little ant dragged his tired body away. I thought the little ant just gave up. But a few minutes later, things were beyond my expectation. This little ant came to Qian Qian with thousands of reinforcements. This little ant is so clever that he even called for reinforcements. It seems that they know that unity is the secret of strength. Thousands of ants kept biting the big caterpillar tightly, making it roll up and down painfully, but the ants just wouldn't let go. Inadvertently, the big caterpillar fell into the ditch, struggled a few times and was drowned. The little ants had a brainwave and took the big caterpillar as a good meal and brought it into their home-the ant nest. ...

From this little incident, I firmly believe that the charm of nature is endless, so as long as we pay attention to life everywhere, be conscientious in life, be willing to observe and be good at discovering, we will certainly get a lot of inspiration and our life will be more interesting.