Write a composition with a bag that will become bigger and smaller.

1. Schoolbags that will become bigger and smaller. On the way to school, I saw some people with small schoolbags but still carrying things in their hands; Some people bend over to carry their schoolbags even if they don't take anything in their hands. They are too heavy to breathe. So I thought, is there any way to put more things in my schoolbag without getting tired? So I thought of designing such a schoolbag-it can be big or small, and the key is that it is not tired to carry it!

Just do it, and I'll start at once. It looks ordinary, just like our usual schoolbags. But there are two buttons on its right: the big button and the small button. Its magic lies in that when your schoolbag is empty, you press the shrink button, and the schoolbag will automatically shrink to the size of a cup; When you press the big button, the schoolbag will gradually get bigger until you can hold everything you want.

Because getting bigger and smaller will have an impact on our shoulders and backs. So I put more cotton pads on my back. I also made some adjustments on the shoulder strap. The bigger the schoolbag, the shorter the shoulder strap; As the schoolbag becomes smaller, the shoulder strap becomes longer.

Some people may have this question: If the schoolbag becomes bigger, will it be very tiring to carry it, or even unable to carry it? Of course, I also considered it, so I also installed a gravity device in my schoolbag. When the schoolbag exceeds 3kg, the gravity device of the schoolbag will exert its unique advantages, automatically reduce the weight of the schoolbag and make it easy to carry.

This schoolbag also has a positioning system and a voice function. Once this positioning system is set, it will play a role in time. For example, after parents enter the school address and class time, when their children arrive at school, parents' mobile phones will receive a message that they have arrived at school. If the class is only 10 minutes away and the child has not arrived at school, the schoolbag will tell the child the current time by voice. If you don't arrive at school according to the class time, adults will receive an alarm message on their mobile phones.

What do you think of my smaller and smaller schoolbag? Do you want such a schoolbag?

2. The exercises in the second volume of the fourth grade Chinese will become bigger and smaller. Schoolbags will become smaller and smaller. Imagine composition five.

Everyone has a schoolbag. The style and color of the schoolbag are dazzling. But with the growth of age, I know more and more knowledge, and I change more and more schoolbags, which are heavier and heavier. We are not tall. It suddenly occurred to me: will there be new types of books?

First of all, the manufacturer stores a variety of styles and shapes in the schoolbag, such as: fruit shape, cartoon head shape ... If the young master wants to choose his favorite style, just press the red button at the top of the schoolbag. Secondly, its shell is made of rubber and has the function of automatic contraction. The two buttons on the left side of the schoolbag are used to change the size, one is bigger and the other is smaller. The textbooks and learning tools in the schoolbag will also change with the size of the schoolbag. Then you can go to school with a small bag on your back.

There is also a transparent place in front of the schoolbag for loading the curriculum. As long as you put the schedule in, when there is no textbook to recite, you will send out a "beep" alarm to remind the young master! Oh, great! Its switch is also different, unlike the current zipper, which can be broken by pulling hard. Instead, it is a small button that can be turned on at the touch of a button. Want to know what is the white button on the right side of the schoolbag? To tell the truth, it is used to enjoy music. As long as you touch it, it will immediately make a wonderful song. When you are tired and bored, you can use it to relieve boredom.

How's it going? Isn't the new schoolbag nice? Not only beautiful appearance, diverse functions, but also very practical! Students, I believe this is by no means a daydream. As we grow up day by day, with the continuous development of science and technology, in the near future, new schoolbags will be born in the future.

3. Schoolbag that will become bigger and smaller, 350-word composition This afternoon, as usual, I carried a heavy schoolbag and felt like a mountain pressing me and walked home step by step.

As I walked, I thought, "If only I had a light schoolbag." Suddenly, the schoolbag changed.

I stood up and found that my schoolbag had become an inflatable hydrogen balloon, floating lightly in front of me. The ears of a pair of cute rabbits above the schoolbag are shaking with the wind, and the whole schoolbag looks like a naughty rabbit. I put my schoolbag on the ground, and the ears of two rabbits automatically stick together to form a handle.

This surprised me: "Where did I get this baby?" I carry this bag to school every day. The material of this schoolbag is very special. You can draw on it! You see, I drew a white rabbit with red eyes before. This is a white rabbit schoolbag.

After reading it for a long time, I don't like it, but I can change it. I wiped my schoolbag with a wet cloth, and it was all for nothing.

I'll draw a red squirrel. Hey, it's a squirrel bag. It's fun to tie a ponytail! This schoolbag also has a special function, which will change the painting style according to the owner's mood. When you are unhappy, you will display funny words like 100; When I am happy, there will be all kinds of smiling faces on it.

How interesting! What should I do if I get my schoolbag dirty? Don't worry, just wipe the bag with a clean wet cloth and it will be as bright as new. What's even more amazing is that no matter what sticks to it, it won't hurt it at all, but it's strong! If I were at school, I would take out all the books, then fold my schoolbag like origami and put it in a box the size of an ordinary glasses case.

Take it out after school and spread it out. It has become a big schoolbag again. Ding is out of school.

I skipped home with my ever-changing schoolbag on my back. Beside 323131335323631343130323136353333e4b893e5b19e313333333. Niuniu, what are you doing? A voice exploded above my head.

I tried to open my eyes, only to find myself sleeping under a big tree by the side of the road. I was just daydreaming. However, the ever-changing schoolbag in my dream will never disappear, and I think about it every day.

I hope I can design and make such a schoolbag, so that more children can go to school easily. I believe that one day in the future, all students will carry my masterpiece-ever-changing schoolbags at school! .

4. whimsical talking schoolbag composition talking schoolbag

As soon as I got up in the morning, after breakfast and just picked up my schoolbag, I couldn't help crying: "Wow, the schoolbag is so heavy that I can't carry it!" " "I complained to my mother with a bitter face." You have to carry the heavy ones! Everything in your schoolbag is very important. How can you not recite it? "Mom won't feel sorry for me because of this. I have to walk to school with a heavy schoolbag on my back. As I walked, I thought: If only I had such a multifunctional "schoolbag" one day;

The multifunctional "schoolbag" is very small, as small as a book I have now. When opened, there is a screen and a small row of buttons. Just like the current notebook computer, you can call up all the teaching materials such as Chinese, mathematics and foreign languages by selecting different buttons. There are also exercise books, draft books and game functions. In short, it has everything needed for class. Take it with you at school and everything will be fine. What's even more wonderful is that you don't have to worry about the teachers and students sitting in the front row coughing and hoarse because of chalk dust, because the teacher also has a multifunctional "schoolbag" in his hand, which can control the screen of the classmates' "schoolbag". Even if there is a unified "board" on the screen, it will not affect students' taking notes. Students don't have to worry about wearing small eyes for a long time, because it can adjust the background color of the screen according to your hobbies. It will naturally close every once in a while, so that your eyes can have a rest. When your eyes are too close to the screen, you can also remind you with eye-catching colors. ...

After class, students can open the game device together and play happily on the "schoolbag". If you ask: What should students do in class? Let me tell you: "The teacher can set a password, block the game function in class, and open it after class ... Homework can also be typed with keys, and the teacher can call for criticism at any time. In this way, the cadres in our class don't have to collect and distribute notebooks. Teachers can also record the contents of lectures in their "schoolbags" and send them to their classmates by e-mail, so that no matter who is sick at home and who doesn't listen carefully, they can open the lectures before the exam.

I came to the school gate with a bright eye. Thinking of the current "audio-visual education", I looked up at the sky and thought: my multifunctional "schoolbag" may not be a dream!

5. The schoolbag has become lighter. Imagine writing 400 words. "What is this bag? ! Bad every time! " I said angrily to my schoolbag. Do you know that?/You know what? Do you know that?/You know what? I have racked my brains for this matter. After careful consideration, I finally thought of inventing a smart schoolbag. Next, let me introduce this smart schoolbag!

This schoolbag is similar to ordinary schoolbags, but the function of this smart schoolbag is not comparable to ordinary schoolbags. It has four functions. The first function is that if it is broken, it will use the "automatic repair device". In an instant, the smart schoolbag is like a new one. The second function is not to worry if it is dirty! It will automatically spray "ultra-clean cleaning agent" and dry in one second. The third function is that if you feel too heavy, just press the red button on the right side of the bag, and it will make everything in the bag disappear like magic. When you need it, press the green button again, and it will change the contents of the bag back like magic. The fourth function is that if your books are messy, there will be a robot that can sort out 20 books in a second. Don't you think it's amazing?

My smart bag is not bad! I will study hard and invent smart schoolbags in the future!

6. Future schoolbags (composition, 500 words) At 7 o'clock in the morning, students come out from home to go to school one after another. They walked to school in twos and threes, talking and laughing. Huh? Is there no class today? Where is the heavy schoolbag on your shoulder? Take a closer look, everyone has a gadget similar to mp4. To tell the truth, this is our schoolbag, a light and smart new electronic schoolbag. He was invented by the famous Dr. Ai Ju for love, and it sold out as soon as it went on the market.

Although it is only as big as a book, it is not small. He has a big screen, which shows the icons of textbooks in various subjects. Just click on any icon in any category. For example, in Chinese class, you just need to click the "Chinese" icon and a Chinese book will appear on the screen. To turn to which page, just click on the corresponding number. Of course, so are books on other subjects.

Our e-book bag can hold not only textbooks of various subjects, but also all kinds of extracurricular reading materials that ordinary schoolbags dare not and cannot hold. It can hold a library! Can let us swim in the ocean of books anytime and anywhere!

Our schoolbags can also be linked to the electronic blackboard in the classroom. In class, the teacher no longer has to "eat" the chalk powder standing on the stage. She only needs to bring an "earphone" to talk, and the same content will be displayed on the blackboard and in the students' e-book bag. If there are any more "H 1N 1" and "SARS", students can attend classes at home just like in the classroom, and they are no longer afraid of infecting each other.

Is our "bag" good? If you don't want to carry a schoolbag like a hill to school, then start working hard now. I believe this beautiful wish will come true!

7. If I were a schoolbag, I would carry it home. I will put my schoolbag on the chair. Every time I see a schoolbag, I think: If I were a schoolbag.

As a result, I took a nap in middle school, and my wish came true. It really became a small schoolbag. I go to school with my little master every day. My little master didn't take good care of me. One day after school, my master carried me to the swing in the leisure square. I didn't expect the master to put it on the ground and dirty my new clothes. After a while, when the little master was playing on the swing, a child stepped on my foot and my body hurt. To make matters worse, the young master was tired of swinging, so he took me as a chair and I cried sadly. When the little master came home, she couldn't do a single question, so she hit me on the head so hard that my head hurt. I cried again. I'm really sorry.

Just then, my father woke me up and I returned to real life, but this time I became a schoolbag, which really made me unforgettable. I understand that we should cherish school supplies, which are also alive, so I hope every child should cherish their school supplies.

8. Look at the picture and write a walking schoolbag. "Oh, oh, the zipper of the schoolbag is caught again." Nowadays, the quality of schoolbags is too poor and the back is too heavy. I designed a "robot" schoolbag that can walk and switch by itself.

The schoolbag I designed has eight buttons, which are distinguished by different colors. Different colors represent different functions, namely red, orange, yellow, green, cyan, blue and purple, and there is a white button. These buttons are not used to decorate schoolbags, they are all used for special purposes. Press the red button and go right. Press the orange button to go left. If you press the yellow button, the schoolbag can move forward; Press the green button again and the schoolbag will retreat. If you retreat to your satisfactory position, you can press the blue button to stop the bag. If your classroom is on the second floor, it doesn't matter. Just press the blue button and you can skip the steps and climb the stairs step by step. After school, don't worry about not coming downstairs. Just press the purple button and your schoolbag can jump down the stairs step by step. There is also a white button. Yes, it is the switch used to open and close the schoolbag. If you press the white button, the schoolbag will open automatically. If you press the white button twice in a row, the bag will close automatically.

My schoolbag can become bigger and smaller! You open your schoolbag first, and then call it "big" to make it bigger. If you close your schoolbag and say "small", it will become smaller.

My schoolbag is like a travel bag, without a zipper, only a long pull rod. The schoolbag looks beautiful, with images of Ai Lier, Bell and Snow White on the surface. It has three floors. The first floor is where we put our textbooks. Zip on the second floor, there is not much space, it can only be used to put exercise books; The third floor is not wide enough. It is used to put pencil boxes.

Look, the high-tech schoolbag I designed is amazing.

9. A 400-word composition about me and my schoolbag. I have an exquisite and beautiful schoolbag, which my uncle bought for me before I went to school. Its color is bright and festive red and its shape is square. Right in front of it, a cute cartoon dog is smiling at everyone. Its simple appearance really makes people feel better. Next to the cartoon dog, there are also some English words written: What is life? What is the new world? Have a nice day. Haha, do you know what it means?

The schoolbag is divided into three layers from the inside out. I usually use it to put the innermost layer of class books; The middle floor is used to put learning tools such as pencil boxes, homework bags and art materials; The outermost layer is used for napkins and handkerchiefs. There are two small bags on both sides of the schoolbag, one for holding cups and the other for holding an umbrella when it rains. This schoolbag is my good helper! I used to use another small blue schoolbag. With the rise of my grade, there are more and more books and notebooks. Gradually, when putting books, there are always several stationery boxes that can't hold the composition, and often they can't find a place to stay. No way, the pencil can only find a place to stay. Therefore, stationery and books are often lost, damaged or torn. Well, it also greatly affected the speed at which I finished my homework at school. Since I used this new schoolbag, I won't lose the books I need for class; With it, I won't leave my exercise book at school; After using it, my book will never bend again. However, even the best schoolbag needs to be cherished. But when I first started using it, I was too busy having fun to remember this. After a period of time, the beautiful schoolbag became a "sloppy king": I couldn't tell whether the color was red or gray, my stomach was bulging, and my zipper fell off in some places ... I was ashamed to see this scene, so I quickly "handled" the schoolbag and made it healthy again. From then on, my schoolbag and I became inseparable friends. It accompanies me to and from school every day, and I cherish it. The schoolbag has become a real good helper in my study!