There are 200 to 300 books about catching dragonflies.

When I came home from school yesterday afternoon, I did my homework first. After finishing my homework, I went to the park next to my home to play alone. At night, there are big dragonflies everywhere in the park, just like small planes flying in the air.

I ran around for a while, chasing dragonflies everywhere A pink dragonfly was chased by me and fell to the ground. I took it home at once.

When I got home, my mother asked me, "What did you do?" I said, "I went to catch dragonflies." I showed my mother the dragonfly I caught. My mother saw the dragonfly in my hand and said to me kindly, "Dragonflies are beneficial insects, which prey on mosquitoes and other harmful flying insects." They are good friends of mankind. We shouldn't hurt them. " After listening to my mother, I bowed my head.

Later, I reluctantly put the dragonfly back into the sky. Seeing this beautiful dragonfly flying freely in the air, I am happy again. I think the little dragonfly can see her mother again.

Chapter two: catching dragonflies

On Sunday, the weather is sultry. There are many dragonflies flying in the air downstairs of my house. So, I had a dragonfly catching competition with my neighbor's children.

A dragonfly with transparent wings flew towards me, and I picked up the bamboo net and waved it at the dragonfly. Dragonflies are very sensitive and fly away after a few turns. Another beautiful dragonfly flew to me. I changed my method and waved it with a bamboo net, and it escaped again. I was so tired that I was panting and sweating, and I sat down on the ground. Dragonflies in the sky are full of pride, as if laughing at me and saying, "Haha! You can't catch me! " I was very angry and said to myself, "Hum, what's the big deal? See how I tidy up you. "

I stood up and waved my bamboo net vigorously while the dragonfly was not looking. Wow! Got it! I cheered and slowly put it in the paper bag. Looking at the beautiful little dragonfly, it has a pair of transparent and shiny wings and two bright and flexible eyes.

Suddenly, I found the dragonfly's body shaking. I remember that dragonflies eat insects and can't hurt them. So I opened the paper bag and let the dragonfly fly out of the paper bag and return to nature?

Ah! Today's dragonfly catching is really interesting!

Chapter III: Catch Dragonflies

Childhood is innocent and carefree. When I think of my childhood, the laughter still lingers in my ears.

When I was a child, in the hot summer season, my favorite thing to do was to catch dragonflies with my children. But every time my friends can go home with victory products, every time I come home empty-handed, I can only watch them "fight" with their dragonflies.

I think they must have some secret weapons, so the next time I catch dragonflies, I will secretly follow them and see how they catch them. Instead of catching dragonflies first, they found a wooden stick with a fork and wrapped it on the internet.

I think I understand that they are catching dragonflies with nets. So, I wrapped grandpa's fishing net around a forked stick to catch dragonflies. However, not only did I not catch the dragonfly, but I also fell down. This time I went home empty-handed. I have no choice but to ask for advice.

My friends all laughed when I told them. My best friend Guo Haiqiu said, "Our net is a special kind of net, but it is not a fishing net, but a spider's net, so our net can stick dragonflies, but yours can't." My friends also taught me how to hold a stick with a fork, how to wrap a spider's web and how to catch dragonflies. I finally understand the secret of catching dragonflies. I also learned to catch dragonflies

This incident also made me understand that no matter what you do, you should pay attention to methods, so that you can do things well.

Chapter four: catching dragonflies

Yesterday afternoon, I came to the railway square to skate. When I put on my skates, I looked down and saw many dragonflies flying on the ground. I know that the weather changes caused the atmosphere, so dragonflies can't fly high.

Many children are catching dragonflies in the square. I saw many children struggling to catch dragonflies and thought: It's no use doing such a simple thing! I rushed up and covered a dragonfly with my hand. The dragonfly suddenly flew behind me and easily escaped my capture. I just turned around and caught it and closed my eyes. Only then did I realize that it was not that simple! I happened to see a dragonfly flying in front of me when I was sighing, so I approached it carefully. I grabbed it, but it flew into the pool. The pool is like its base, we can't touch it at all, so we have to give up. I have long hair and am stupefied. Cousin suddenly ran over. I shouted, "Zhang Chen, there are many dragonflies here." Hearing this, my cousin looked around and suddenly went down the mountain like a tiger, pouncing on a dragonfly flying low and slow. Cousin grabbed his hand and caught the dragonfly. Cousin was proud, but the dragonfly struggled to run away. Dragonflies narrowly escaped death and accelerated like arrows. My cousin said angrily, "We will attack from both sides and chase!" I went to the right and he went to the left, chasing the dragonfly all the time. Seeing that it was about to be caught, the dragonfly used magic to escape our attack. I was so angry that I chased him, but I still didn't catch him. We were panting with fatigue. At this time, the dragonfly is carefree, as if looking down at us and as if challenging us. When it triumphed, we rushed up. Unexpectedly, it found us again, turned and flew to the flowers and played hide-and-seek with us. Alas! If only I could skate as fast as a dragonfly!

It's quiet and dark there. Where did the dragonfly fly unconsciously? Maybe you are tired of playing. Go home and have a good sleep. Although we didn't catch a dragonfly today, we had a good time.

Chapter five: catching dragonflies

One day in the summer vacation, my friend Zhang Lin and I went to Vanke Square to catch dragonflies.

When we come to the square, let's see if there are dragonflies on the tree. At first, I found a few, counting 1, 2, 3. Wow! A * * * has six, I made a gesture to Zhang Ruilin, and he came right away. We are sandwiched between the two sides, and our faces are blue with nervousness! Suddenly, with a bang, I hit my head! But we didn't catch any, so we changed places in frustration. I think: we can't catch up with this speed. We must find another way. I was thinking about it when I suddenly found some dragonflies resting together. I clapped my hands and cheered. I stared at the dragonfly tightly, my feet moved forward gently, and my nose seemed afraid to breathe. Zhang Linzhi stared at me, for fear that I didn't catch them! Wow, I shouted, "I got it, I got it, you are great!" " "It scared me! Then he hugged me! He and I both laughed and said in unison, "These dragonflies are idiots! " "

Looking at the sky, the sun is still half exposed, so we should go back. What a pleasant day!

Chapter six: catching dragonflies

The scenery in the country is really beautiful, attracting groups of dragonflies. I couldn't help looking up and counting: one, two, three ... "So many! I'm afraid there aren't so many dragonflies in the county? " I can't help sighing. Hearing this, the peasant sister Xiao Xiao suggested catching dragonflies. My cousin and Xiaoxiao's younger brother Wangwang jumped three feet high with joy.

Through the cornfield, I came to a place full of weeds. There are so many dragonflies here. There are many dragonflies resting on the grass tips, and dragonflies of different colors are flying in the air. Make a buzzing sound. I took the insect net that Xiaoxiao handed me, unable to restrain my inner joy. I jumped in the air for a while, and the dragonfly in the air was forced to land on this grass. I saw Xiaoxiao leaning forward slightly, and her right hand carefully reached out to a yellow dragonfly, only to see her quickly.

Are you satisfied with my answer? Hope to adopt, thank you!

Composition of catching dragonflies in the wild in autumn

During the summer vacation, I went to my grandmother's house to play and catch dragonflies. There is a big lawn in front of my grandmother's house. The neighbor's children chased dragonflies on the lawn with bamboo poles, and I joined the fight with straws. A dragonfly flew towards me happily, and I raised the straw and bumped into it head-on. The dragonfly deftly flashed, turned two corners and flew away leisurely. The front end of the straw fell heavily to the ground and broke. Dragonflies are suspended in the air like helicopters, as if laughing at my incompetence. I was so angry that I lifted the straw and hit it hard and missed. I was panting and sweating with fatigue, but the dragonfly looked particularly proud. I lay on the grass, resting and thinking: the wind must have let the cat out of the bag. Yes, there is an idea! "I jumped up from the ground and held the straw straight in the air, waiting for it. Dragonflies fly closer and closer. I aimed at its head and hit it hard, quickly and fiercely. Like an enemy plane that was shot down, the dragonfly fell to the ground. "Ah, I caught a dragonfly! "I screamed and ran over, picked up the dragonfly, held it in my hand and looked at it carefully: this dragonfly is really beautiful! There are two round and big compound eyes on the round head, which shine like pearls, and the wings are as transparent and shiny as gauze. The orange belly is dotted with black rings, which is quite beautiful.

The composition of catching dragonflies should have been experienced

During the summer vacation, I went to my grandmother's house to play and catch dragonflies.

There is a big lawn in front of grandma's house, and the children in the neighborhood are chasing dragonflies on the lawn with bamboo poles. I also took a straw and joined the fight.

A dragonfly flew to me happily. I raised the straw and ran into it head-on. The dragonfly flashed deftly, turned two corners and flew away leisurely.

Another dragonfly flew towards me.

I aimed at its head and hit it hard, and the front end of the straw fell heavily to the ground and broke.

Dragonflies are suspended in the air like helicopters, as if laughing at my incompetence.

I was so angry that I lifted the straw and hit it hard and missed. I hit hard again and missed.

I was panting and sweating with fatigue, but the dragonfly looked particularly proud.

I was lying on the grass, resting and thinking, "Why can't I hit it?" The wind must have let the cat out of the bag.

Yes, there is an idea! "I jumped up from the ground and held the straw straight in the air, getting earlier and earlier.

Dragonflies fly closer and closer. I aimed at its head and hit it hard, quickly and fiercely. Like an enemy plane that was shot down, the dragonfly fell to the ground head-down.

"Ah, I caught a dragonfly!" I screamed and ran over, picked up the dragonfly and held it in my hand to look at it carefully: this dragonfly is really beautiful! The round head has two round and big compound eyes, which shine like pearls, the wings are as transparent and shiny as gauze, and the orange abdomen is also equipped with black rings, which is quite beautiful.

Dragonfly's wings are quivering slightly, and its body is trembling. I think it seems to be crying.

I suddenly felt sorry: "What a small life! I was beaten head-on, at least with a concussion.

What the teacher said echoed in my ears: "A dragonfly can prey on 20 flies in an hour, and mosquitoes are its delicious food ..." My conscience was scolded: "I hit a good friend of mankind, and I hurt innocent little lives.

""Let it return to nature.

"I held the dragonfly high and threw it hard, but it fell heavily to the ground.

A hateful rooster swooped down and pecked the dragonfly in his mouth. I even jumped on it and grabbed it, only picking up two transparent and shiny tulle wings.

I hold these two wings, stupefied.

The breeze blew, and the transparent and shining wings like gauze floated into the air, drifting farther and farther.

I seem to feel that it is alive again and has joined the dragonfly team that preys on mosquitoes.

I don't know when my friends put down their bamboo poles and stood with me, looking up at the sky for a long time. ...

A boy in grade one catches dragonflies and looks at pictures.

Today, the sun is shining, and Tintin is happily holding a net bag to catch dragonflies on the grass.

There are so many dragonflies on the grass! Like a small plane, Tintin chased the dragonfly with a net bag, but the dragonfly seemed to be deliberately against Tintin. Tintin goes east, it goes west, Tintin goes south and it goes north.

Tintin was so tired that he couldn't catch half a dragonfly.

But dragonflies are flying there happily.

Ding Ding saw that he was busy for a long time and had to go home angrily.

On Sunday, I went to Xiaohong's house to play.

I saw five or six children catching dragonflies on the road.

I went up and saw that the children caught a lot of dragonflies.

I quickly asked: Do you know whether dragonflies are beneficial insects or pests? The child said, "I don't know.

"I said," this is a beneficial insect. It rains when flying low, and you can catch bugs.

"The children jumped up and said," Great! " I took the opportunity to say, "Then why don't you let go?

"The children hurriedly put.

Dragonfly is free, and we laugh heartily.

The little dragonfly seems to say to us, "Goodbye.

"

The third grade composition "Protecting Dragonflies" 200

On weekends, the weather is sunny and sunny. Xiaoming and Xiaoshan want to catch dragonflies in the park. Without tools, they tried to find two bamboo poles and two net bags, made two net bags, and then happily came to the riverside of the park.

Xiaoming saw a little dragonfly stop on a small flower. He approached it gently and slowly with a net bag, then quickly jumped on the dragonfly and caught it. Xiao Ming quickly put down the net bag, grabbed the wings of the little dragonfly from the net bag and held them in his hand to play. Just as he was working hard, a clear and loud female voice rang out in his ear: "Little dragonfly is a beneficial insect, specializing in eating mosquitoes, and little dragonfly is a human."

"After listening to the girl, Xiao Ming glanced at the little girl shyly, blushed and put the little dragonfly down shyly. Hearing this, the Xiao Shan also put away the net bag shyly. They played in the park for a while and then went home.

Composition on "Insecticide Expert" Dragonfly

The table is inlaid with a pair of protruding eyes. These two eyes are complex in structure and consist of thousands of small eyes, which are compound eyes.

Because of these eyes, the dragonfly is controlled within two kilometers, which is also its good assistant to catch mosquitoes.

Dragonflies have four wings, flat and long, crystal clear, overlapping and dancing, like gauze.

Dragonflies also have a "baby"-a tail that can keep balance and master the direction, which is equivalent to the tail of an airplane.

Don't underestimate this little tail. Dragonflies' tails, like geckos, have the function of regeneration, but when they are hungry, they have nothing to eat.

Because of its quick action, the dragonfly is a veritable "king of flying". People invented the plane according to the flying principle of dragonflies.

However, the flying skills of dragonflies are far superior to those of airplanes. They can not only fly forward, but also fly backward and left and right. They are flexible and skilled, and their flying speed can reach more than 0/00 kilometers per hour/kloc. They are excellent pilots.

On a summer afternoon, in a cloudless clear sky in Wan Li, a group of dragonflies fly lightly.

Sometimes hovering, sometimes diving, quickly skimming over the water, occasionally slapping the water with the tip of the tail, rippling around, probably "the water of a dragonfly."

Dragonflies fly high and low,

Dragonflies use 350 words to forecast the weather.

Many animals are good for people, such as dragonflies, frogs and swallows.

Let's talk about dragonflies first They are beneficial insects and can bring many benefits to people.

It lives near a small pond and catches pests.

Someone catches dragonflies, catches dragonflies, and sells them everywhere after catching them.

We should make laws to protect dragonflies. If they dare to catch dragonflies again, they will break the law and give them to the police uncle.

Frogs are no exception. It is also an expert in catching pests. However, it lives near the pond near the crops. Sometimes, it will catch pests in crops. People call it a good helper to protect crops.

Some children go to catch frogs in the pool and eat frogs when they get home.

We should put up a sign next to the pool, which says "it is everyone's responsibility to protect frogs", so that no one will catch frogs.

Dragonfly's enlightenment composition is 200 words.

The enlightenment of dragonflies has given us a lot of enlightenment. There are still many mysteries waiting for us to discover and explore. On Sunday, I went for an outing. On the way, I saw many dragonflies flying in the air. I want to take them back to my house and observe them carefully. But dragonflies fly very high and far, and when they stop, they are quite agile. The younger brother took a stick and said, "I'm the Monkey King." Afterwards, I hit them with a stick. I knocked a dragonfly to the ground at once. I picked it up and took it home, put it in an empty bottle and observed it with a magnifying glass. Dragonflies have two pairs of thin wings, six small claws at the front of their bodies, and a thin and long stomach. I also observed dragonflies in flight. It keeps shaking its wings in flight and grasps its direction with its long belly. Sometimes it can stop in midair. Ah! I see it looks like a helicopter. Yes! I once asked adults that humans make helicopters based on dragonflies! How great nature is! The little dragonfly has given people profound enlightenment. When I grow up, I will definitely study more mysteries of nature. Dragonfly Revelation II: This afternoon, I came home from school and was surprised to find a group of dragonflies flying over me. Why? I was curious about these dragonflies, so I took a closer look. I saw that the dragonfly seemed to fly lower and lower, and its wings seemed to have no strength. Why? Looking around, it suddenly began to rain heavily. I looked at the sky and those dragonflies, and I was curious. A question popped up in my mind: will it rain when dragonflies fly low? A big question mark appeared in my mind. I looked up the information on the internet. It turns out that before it rained, there was a lot of water in the atmosphere, and the wings of small mosquitoes were stained with water droplets. If they don't fly high, dragonflies will fly low to feed. So the dragonfly flying low should be a sign of rain! Now I finally understand that it will rain when dragonflies fly low, and the big question mark in my mind has finally been solved. The next time I see a dragonfly flying low, I know I have to take an umbrella so that I won't get caught in the rain. Nature is magical. One day in the summer vacation of the third grade, I was playing on the lawn of an agricultural school. The golden sunshine shone on the earth and everything looked splendid. At this time, a group of dragonflies flew in the sky, and they flew around happily. I stopped motionless on the leaves, what a lovely little dragonfly. I really want to catch it. I walked towards the dragonfly. Unexpectedly, after only a few steps, the dragonfly flew to another leaf. I thought: since I caught the dragonfly from behind, the dragonfly couldn't see me, so I crept behind it. As soon as my hand approached the dragonfly's wings, the dragonfly flew away deftly ... It turned out that the dragonfly's eyes were compound. They consist of more than 3000 monocles. Dragonflies can see you whether you stand in front or behind. Dragonfly's eyes are wonderful! I will invent a kind of glasses that can rotate 360 degrees in the future. When the driver wears these glasses, he can see from the front to the back and from the left to the right, which makes driving safer. Nature is really a magical teacher. As long as we pay attention to it, we will learn a lot. The Enlightenment of Dragonflies Four years ago in the summer, we went to the desert to play, drove for a long time, and finally arrived in the desert. I'm glad to run into the desert. The desert is not as desolate as it used to be. There are many yurts in the desert. There are groves everywhere. There are one or two groups of dragonflies flying in the sky. I want to catch some dragonflies to play. There are red, green and black dragonflies in the sky. Forget it, ............................................................................................ Dragonflies are not easy to catch after all. I'm ready to start catching them. I crouched down and stared at a dragonfly. It was a big green dragonfly, which landed on a meadow. I made a cover with my hand and moved slowly. I walked forward carefully for fear of scaring it away. I approached it, and my hand slowly approached it. What an asshole! I didn't catch it, but I let it fly I'm not afraid of failure, but I'm afraid of losing confidence, so I'll catch it again. I stared at a dragonfly for a long time before he fell behind. Maybe they all know I'm here and dare not come. I moved to another place, this time "scouting" extensively, staring at a meadow, waiting for the prey to be "caught". One. It failed again. The dragonfly didn't leave in a hurry like its companion, but landed on a grass, as if demonstrating to me. I struggled. This time, the dragonfly was not so lucky and entered my "Wuzhishan". My skill in catching dragonflies has gradually improved. I caught a lot of dragonflies, but I let them go. Because I want them to fly freely, I envy them to fly carefree. Fly to all parts of the world, to the places you yearn for. The enlightenment of Dragonfly V helicopter comes from the principle of bamboo dragonfly, that is, the toy we played when we were young, which is sculling and flying with our hands. The development of helicopters has experienced rare twists and turns in the history of human scientific development, which is much more difficult than fixed-wing aircraft. The reason is that its unique rotor flight mode has brought too many technical obstacles. The breakthrough of helicopter needs technical progress in many aspects. But the future development trend of helicopters is to combine the functions of helicopters and fixed-wing aircraft. The concept of helicopter can be traced back to the ancient bamboo dragonfly in China. According to well-documented historical records, in the book "Holding a Robot" written by Ge Hong in the Jin Dynasty, it describes the scene of vertical lifting with a rotating bamboo dragonfly and vertical pulling with a rotating propeller. It is considered to be the earliest description of the basic principle of VTOL helicopter in the world. Although these records lack reliable basis, the contribution of bamboo dragonfly to the development of world aviation is universally recognized. Before the invention of hot air balloon, bamboo dragonfly was introduced to Europe as a toy, and its wonderful vertical lift-off principle was studied by Europeans as an aircraft. Many western aviation pioneers have realized some important aviation principles from bamboo dragonflies.

Articles about dragonflies

In the hot summer, there are many beautiful insects floating in the air, among which dragonflies are the most striking.

I saw the little dragonfly so cute that I caught one.

The little dragonfly flapped its wings as if afraid of me.

I carefully pinched its wings and put them on my palm.

Ah! I found that the eyes of the little dragonfly are green, glowing with green light! I wanted to know why its eyes were so big, so I took a magnifying glass and observed it carefully.

It's strange that dragonfly's eyes are made up of many small eyes.

A few days later, I caught mechanical dragonflies and observed their eyes, and found that they were all made up of dense small eyes.

I became very interested in this problem, so I looked for information everywhere with the help of my parents.

Finally, one day, my mother bought me a book called Learn Encyclopedia Every Day.

I know from the book: How many eyes do dragonflies have over 1 10,000, and most of them are over 20,000! Nature is really wonderful! How many secrets does it still hide?

Why do dragonflies fly low?

Why do dragonflies fly low after lunch on Sunday?

Dad asked me, "Fanfan, shall we go for a walk together?" I jumped three feet and said, "Good! All right! Good! " My father and I were scattered in the park and saw green willows, like a girl washing her long hair by the river.

Fish are jumping around in the river as if they were naughty children.

Some swim around in the river, just like submarines, and the river is crystal clear.

At this time, we were tired of walking and sat in the gazebo.

Suddenly a group of dragonflies flew to me and danced in mid-air. Some even surrounded me as if I were their trophy.

At this time, it rained heavily under the dark clouds, and suddenly those dragonflies scurried around and disappeared into the endless rain curtain.

The next day, after school.

I saw a group of dragonflies flying high above my head, like small planes.

At this point, I am puzzled. Why do dragonflies fly low in rainy days and high in sunny days? When I got home and finished my homework, I went to the study to find books about insect secrets.

Finally found it. I opened the book and looked at the table of contents, 107.

It turns out that the reason why dragonflies fly low is that the humidity in the air is quite high before it rains, but when dragonflies fly, they often get their wings wet when they encounter wet water vapor. This is the time for dragonflies to catch their prey and prevent raindrops, thunder and hail from hurting themselves.

That's why we see dragonflies flying very low.

Through this incident, I understand that as long as we pay attention to the small events of everything, we can discover its mystery.

Protect dragonfly composition 300 words

One summer morning, after the rain, I went out to play with my neighbor's little brother.

When we came to the small garden, we saw that the willow branches were blown by the wind like fairy's hair, which was very beautiful.

Many dragonflies among the flowers are busy catching mosquitoes.

Some fly high into the sky, and some land on flowers and plants.

At this time, a big dragonfly landed on the flowers and plants around my little brother.

My little brother stared at the big dragonfly and thought, What a big dragonfly! If only I could catch it and make a specimen! He crept up to the dragonfly.

He reached out his little hand to catch the dragonfly, which flew away.

The little brother shouted, "Sister, come quickly. Look at this dragonfly! Come and help me catch it and go home to make a beautiful specimen.

"He shouted to recover the dragonfly.

I quickly stopped him and said, "Little brother, dragonflies are beneficial insects. It can eat many mosquitoes every day. You have to catch it and make a specimen. Can it still catch mosquitoes? " If all children are like you, it will naturally become a mosquito world. How terrible!

"Little brother more listen to more afraid, never catch dragonflies.

At noon, I happily led my little brother home.

Please indicate the source for reprinting. There are 200 to 300 books about catching dragonflies.