In the fourth grade, I wrote a whimsical composition of about 450 words.

Whether in school or in society, everyone must have been exposed to writing. Writing can exercise our habit of being alone, calm our minds and think about our future direction. So have you ever studied composition? The following is a wonderful 450-word composition written by me in the fourth grade, carefully arranged for reference only. Welcome to reading.

I want to invent a unique box that is both beautiful and practical.

The appearance of the box is decided by the owner. There are many theme styles for the owner to choose from, and the shape library also has many shapes, such as circles, squares, triangles and so on. In addition, you can use your mobile phone to draw the shape and send it. Its material is very special. It will soften after drying in the sun, and the owner can knead it into the size he wants. When the box touches an object of any color, it will become that color.

For a box with important things, safety is very important. Whenever the owner goes out, the box will be automatically set to cautious mode, and as long as someone tries to open the box, the mobile phone will receive an alarm immediately. Don't panic at this time, because the box needs password and face recognition to unlock; Photos are no good, they have their own monitoring, and you can see who it is.

As a box for students, there is a great demand, that is, large capacity. However, due to the large capacity of the box, it is inconvenient to carry. The box I invented is small and flexible, and can hold countless things, just like Doraemon pocket. There are so many things that you can't find them. You can enter what you want on the screen, and it will immediately take it out like magic. Besides, anything can be put in.

Because of the use of special materials, it also has a special waterproof function. Many boxes will get wet when it rains, and it has a transparent protective film, so it won't get wet no matter how it rains. Because the cover is too tight, not a drop of water can get in.

The box I invented is very strange! I think you must want it as much as I do now.

In the fourth grade, I wrote a 450-word fantasy composition. I want to invent a magic dress.

The clothes are made of nano-materials, and there are slots on them for installing high-tech chips. By controlling the change of nano-materials through the chip, the size and color of clothes can also be changed as needed.

If this dress can only be changed in size and color at will, it can't be called a magic dress. It has many practical functions. For example, when we were crossing the street, we met a car that ran a red light. At the moment of impact, the sensor on the clothes will immediately transmit information to the chip, and the chip will control the clothes to inflate an airbag instantly, so that even if we are hit, we will not be injured. Use this function when drowning, so that no one will drown because they can't swim.

Clothes also have the functions of fire prevention, heat insulation and automatic repair. In case of fire, clothes will wrap our whole body and form a mask on our heads, which can filter toxic gases and let us breathe normally without affecting our eyesight, and the heat insulation function of clothes can prevent us from being burned by high temperature. When the clothes are cut by sharp and hard things, the automatic repair function will be turned on and repaired instantly. There are many functions besides these practical functions, so I won't introduce them one by one.

In our life, there are many accidents every day. If we firefighters and rescuers wear this kind of clothes, we can better protect our own safety while saving lives. If everyone can have such a dress, many tragedies will be prevented and people can spend every day happily.

The clothes I want to invent are great. I hope that one day I can invent them and benefit the world.

Write my whimsical composition in 450 words in the fourth grade. Last night, there was a long-lost lotus root on the dining table. Although I have forgotten the taste of lotus root, I still remember the wonderful feeling when eating it.

As soon as I get on the table, I hold chopsticks in my hand with extremely unskilled grasping movements, and I patrol different meals on the table every day, wondering which one should be my first goal. At this time, I saw a strange-shaped plate across the table: a very solid thing with an irregular circle on it. I think it must be delicious. Immediately use chopsticks to point to the dish I can't name. Grandpa quickly put a piece for me. Chopsticks are definitely not good. They are always disobedient and lie motionless on the table. I'm out of breath, but I'm still indifferent. Take it off in the original way! I transferred the chopsticks to my left hand and grabbed them with my right hand. Hey, there's nowhere to run now! It's not creative to pick it up and eat it at once.

Mom said that in today's society, creativity and innovation are emphasized. Let me think of a creative one, too Hey, hey ... I picked up the lotus root slice and saw the light coming through its hole. How beautiful! Hey, isn't that hole the same size as chopsticks? Yes! Do it! Put the lotus root slices on the chopsticks. Haha laugh ... it moves by chopsticks: it slides to the left for a while and to the right for a while. No matter how fast you run, it's no use. I've almost caught my mouth! "Cha" bite, well, it's quite crisp. When I finished eating a lotus root like this, my mother saw it and said with a smile, "This' mutton kebab' is not bad!" A happy smile immediately filled the dining table.

Write my fantastic composition for the fourth grade in 450 words. What's the whimsy you want to ask me? I'll tell you in private. I want to create a dress that can change people's mentality.

If the teacher wears this dress, when he wants to punish the students, this dress will send a signal to the teacher's heart and the teacher's attitude will be better; If the students who have been punished by corporal punishment also wear this kind of clothes, they will know that they are wrong, and will take the initiative to apologize to the teacher and correct their mistakes, study harder and be a good student.

If this dress is worn on a thief, he will receive a signal when he wants to steal, warning him that stealing is disgraceful, not only harmful to people, but also brings a lot of trouble to society. The police will catch him and punish him. At this time, he will never steal again, he will earn his own living, and he will persuade his former "peers" not to steal again. From then on, everyone abides by the law and the world is at peace.

If you put this dress on a person who likes littering, he will receive a signal to let him know how hard the sanitation workers do cleaning work and what impact his practice will have on the city appearance! In this way, he will never litter again, and the work of sanitation workers will become easier.

If you dress an unsympathetic person in this magic dress, then he will sympathize with the poor and the elderly who have difficulties. Let him understand that people who lack compassion lack the traditional kindness of the Chinese nation! At this time, he will feel guilty and then contribute help and dedication.

If you wear this dress on an "official" who is often bribed, he will change his mind and understand that bribery is a violation of law and discipline and must be punished by law. Therefore, doing things will be aboveboard and upright, and you will be a good "official". In that way, all the "officials" in the world are just, and no one goes through the back door.

If there are such clothes, the world will be peaceful, clean and just. I hope this day is getting closer and closer to us. ...

In the fourth grade, I wrote a 450-word whimsical composition. Every child has a wild imagination and is always curious about all the unknown things. Of course, I am no exception.

It is said that there is liquid water on Mars, and Mars is in a livable zone like the Earth. A bold idea flashed through my mind. I want to invent a space immigrant spaceship so that people can visit that fascinating planet. The hull is cylindrical and the bow is conical, and the streamlined hull completely conforms to the aerodynamic principle. The stern is equipped with an interstellar engine, which can make the spacecraft travel quickly in space. Both sides of the spacecraft are also loaded with freely retractable defense weapons. If an uninvited asteroid approaches during driving, it can be destroyed immediately.

At the bottom of this ship, there is a huge warehouse unparalleled in the world, which can carry countless goods. There are many luxurious rooms in the main body of the spacecraft for immigrants to live in. Every room is almost endless, and only a few huge buttons are distributed everywhere.

If you are hungry, just press the green button and a big meal will be delivered to you. Maybe you want to watch TV entertainment after dinner, so please press the yellow button and a TV will appear in front of you, playing interesting TV programs. Press the orange button, the room immediately becomes a library, and rows of bookshelves appear in front of you. What if you want to go shopping? You can do it without leaving home, and the purple button makes it easy for you to shop online. Shortly after placing an order, the robot responsible for delivery will knock on the door and deliver the goods to you. When you yawn and sleep blindfolded, press the blue button and a comfortable bed will appear.

I really hope my dream can come true soon. By that time, humans can walk freely on Mars and even planets and build our own space base.

In the fourth grade, I wrote my own 450-word whimsical composition, with 6 fantasies, beautiful and sweet; Looking ahead, people are full of happiness and expectation. In today's society, with the continuous improvement of people's living standards, environmental protection and air pollution have also become a serious problem that cannot be ignored. We can see this phenomenon from time to time in the street. Peels and garbage bags are thrown everywhere, causing piles of garbage, flies flying around and stinking. Therefore, I want to invent a small and exquisite "environmental protection trash can"

The "environmental protection dustbin" is generally cylindrical and one meter high. But it can change at any time as you wish, and it has various shapes. It can be turned into lovely cartoons, beautiful fruits, noble and classical, generous and elegant ... all kinds, which make people look like they have a beautiful enjoyment.

The difference is that it has three buttons, green, yellow and red, and three buckets! When you throw garbage in, the smart chip inside will distinguish which garbage can be recycled and which garbage can't be recycled and automatically separate it out. If the garbage is full, it will make a beep to remind you. As long as you press the red button, it will automatically eat all the non-recyclable garbage; Press the yellow button, and some fresh air will come out. When you press the green button again, it will turn the recyclable garbage into new ones and put them in the third bucket for people to use.

Where sewage flows, the use of "environmental protection trash can" is even greater! Put it near the water's edge, plug in a pipe that goes straight into the water, and press the green button. It can turn dirty water into pure water like a magician, and finally flow out of another pipe for people to drink.

With the "environmental protection dustbin", people no longer have to worry about garbage and sewage. You see, on the wide road, flowers are in full bloom and trees are shaded. There are no mosquitoes flying around and pungent smells in the original garbage dump.

Ah! I really hope my dream can come true and make it benefit mankind.

Students, there are thousands of cars in Qian Qian in the world, but the cars in my imagination are very different from the real cars. Let's have a look!

Look! Its appearance is yellow and gold, with two lovely pictures of Ke Jiquan on it. This car has many functions, and all kinds of buttons inside are dazzling. This is a magical car, which can go from heaven to earth, and it is a multifunctional automatic car integrating trains, planes and ships.

This car brings a lot of convenience to people. Before departure, as long as you click on the destination location on Baidu map, the car can drive automatically; If I am late for school, I won't have to have breakfast at home. Just press the button with a knife and fork, chopsticks and spoon, and it will find a nutritious breakfast from the storage box and hand it to me to enjoy. If I want to travel abroad, just press the button with wings and you can take me to the blue sky; If I want to see underwater animals, I can go to the bottom of the sea by pressing the button of the underwater sign. If I am tired from driving for a long time, as long as I press the buttons of two fists, the backrest will stretch out two electric fists to rub my back, which is neither too light nor too heavy. Very comfortable! Whether I want to listen to music or watch movies, I just need to click a button and it will automatically appear on the big screen. If only such a fully automatic multi-functional car appeared in reality.

I will study hard and strive to build this beautiful and cool car!

Write my fantastic composition for the fourth grade in 450 words. In life, we can order takeout on our mobile phones, but sometimes we can't eat delicious food quickly because of traffic jams. Moreover, it will also trouble the takeaway brother to run around, and it is also dangerous to encounter thunderstorms. Therefore, for the safety of the takeaway brother and our convenience, we must be inseparable from the flight food delivery machine.

The flying food conveyor is about the size of a bird. It has a big round box. The second kind of storage box refers to the storage box with the function of heat preservation and cold preservation. Its interior is divided into two parts: heat preservation and cold preservation by a nano-plate. It has a retractable claw on its back, which is convenient for eating. There are a pair of colorful wings on both sides of the second box of the flying food delivery machine, which is very beautiful! It still glows at night.

The flight food delivery machine has many functions and great functions. When a guest orders food with his mobile phone, he will receive the message and fly to the restaurant as quickly as possible. The waiter only needs to put the prepared food on the table, and it can stretch out its claws and automatically distribute it to the refrigerator or incubator. Then, the flying food delivery machine will fly to the sky! Amazingly, it can identify the route to the destination without manual operation. What's even more amazing is that it can deftly avoid obstacles, fly as high as it wants, and the speed can reach 10 km per second. There is no traffic jam in the air! Takeaway is usually delivered to the door, and the flight food delivery machine can deliver it to the window. Just open the window and you can get the meal and enjoy the food!

Isn't this flying food delivery machine amazing?

In the fourth grade, I wrote a 450-word whimsical composition. The 20th century has slowly gone, and the 2 1 century has arrived. This is a high-tech era, and various inventions emerge one after another, which greatly facilitates people's work and life. One day, I had a whim and created a changeable suit.

This dress is no different from other clothes in appearance, but when people wear it, they will go to heaven and earth, with infinite strength and omnipotence.

On the cargo ship dock, a 10,000-ton ship docked, only to see the workers and uncles wearing ever-changing battle suits, which instantly became infinite in power, and it was easy to move a container to the shore. In a short time, more than 100 containers on this ship were all moved to the shore, which greatly improved the work efficiency.

Look! A skyscraper in this city caught fire. Firefighters' uncles immediately put on ever-changing battle suits and rushed to the scene of the fire as quickly as possible. Suddenly, they found a man waving a towel for help by the window on the 100 floor, and smoke billowed around him. Just then, a fireman's uncle in a changeable suit flew over! Then the fireman's uncle held the man in his left hand, took out the oxygen mask in his right hand, helped him put it on, and then quickly flew down and landed safely.

In the space station, the astronauts' uncles are working nervously. Suddenly the light went out. It turned out that there was something wrong with the solar panel. As a result, the astronauts' uncles put on ever-changing battle suits and portable tool boxes, opened the hatch and easily climbed to the edge of the solar panel to start repairing, which was not affected by the space environment at all. In a short time, the solar panels were repaired and the space station began to operate normally again.

Diving enthusiasts can swim freely in the deep sea, play with fish, maintain the marine environment and explore the mystery of Bermuda Triangle.

This is my whimsy. I will study hard and make it come true!

In the fourth grade, I wrote my whimsical composition, 450 words, up and down 10. I have a fantastic idea that I have a strange car.

This strange car looks like a bullet, has a solid shell and is made of metal materials extracted from aliens. The color of the car body will change with the seasons. Spring will turn pink, summer will turn blue, autumn will turn gold and winter will turn red. The same four wheels, but specially treated, are extremely strong and can be extended and retracted freely. When the car runs at a very high speed, the wheels will be put away and it will fly in the air like a maglev train. There is a lot of space in the car, which can accommodate more than a dozen people.

Cars are operated by colored buttons. If you are tired, press the white button, the car will let you draw the route on the navigation, and the car will automatically drive to the place you want to go on the road; If the car runs out of gas, press the black button and the solar panel will open to absorb solar energy and provide energy for the car; If you want to turn your head, press the orange button and point with your hand, and the car will turn by itself; If you are hungry and want to eat, press the yellow button and say what you want to eat. It will take out the food you want to eat from the back and put it in your hand. If you want to travel in space, press the green button, and the car will extend its wings from both sides of the car body and pass through the atmosphere like a spaceship. If there is not enough oxygen, you can press the red button again and the oxygen box will release oxygen. Of course, if you want to go to the underwater world, you just need to press the blue button, and the car will put away its wheels and dive into the bottom of the sea. As long as you sit in the car, you can see corals, all kinds of swimming fish and all kinds of marine life. My car also has a hidden rainbow button, which can take you to any country you want. It is no longer a dream to connect communication equipment through super Bluetooth, enter the desired country and travel around the world.

Although this is only my imagination, I believe that through our continuous efforts and innovation, all imaginations will come true one day.

In the fourth grade, I wrote a whimsical composition of 450 words, 1 1. As a student, what I want to invent most is a flying schoolbag. The schoolbag I designed looks very ordinary, except that there are a pair of wings on both sides of the schoolbag, two sets of pulleys at the bottom, a big electronic screen on the front of the schoolbag and several buttons beside it. Its appearance is not much different from that of ordinary schoolbags, but it has many functions.

Since it is a flying schoolbag, of course, the most magical thing to carry it is to fly on it. Generally speaking, its little wings is closed. When you want to go somewhere, just enter the address on the electronic screen and press the green button next to it, and it will spread its wings five times as much as before. When you sit on it, it will take you away! At the destination, as long as you press the red button, it will slow down slowly, put down the pulley and slide slowly on the ground until it stops, and it can land safely. Then it will return to its original size, and then the wings and pulleys will be put away. It's so convenient for us to go to school, library and shopping!

In addition, it also has a printing function. For example, don't worry when you forget to bring your homework home. You just need to input the name of your homework into the electronic screen, press the print button, and it will print out your homework. Mom no longer has to worry about losing my homework!

In addition, it also has the function of automatically sorting out schoolbags. This is a great blessing for some lazy children who don't like to clean up! When the books and exercises in your schoolbag are jumbled together, press the blue button next to it and it will automatically help you sort them out.

Now that science and technology are developing faster and faster, my whimsy must come true one day!

In the fourth grade, I wrote a whimsical composition of 450 words, up and down 12. Recently, a virus with a crown is so rampant that it won't know the power of China people unless it is given some color to see! After 9,999 repeated experiments at home, I finally developed a magical pill-Baidu Bujin Pill.

My pills are about one centimeter in diameter, spherical, like peanuts, and colorful. People of different ages take different colors.

I used advanced nanotechnology to make drugs reach the focus through blood vessels and kill coronavirus. After the patient took the medicine, the pill seemed to explode in the body, which made people feel warm all over. Don't worry, sleep for two hours, you will wake up refreshed and the medicine will cure you.

I also use nano-sustained-release technology to make pills play a preventive role for patients suspected of virus.

My Baidu pill has a certain recognition function for food made by wild animals, which is also its magic. If people eat food containing wild animals and are infected with coronavirus, eating my Baidu tonic pill is just like eating chocolate beans, which has no effect.

This magic pill is also the bane of cancer, Ebola virus and SARS. Ha, ha, ha, the magic pill I developed has made such a great contribution to mankind, and I am happy to think about it!

I was relieved to put down my pen. I know it's just my imagination. When I grow up, I must invent this thing. So now we should learn scientific and cultural knowledge, hoping to realize this wish!

In the fourth grade, I wrote a whimsical composition of 450 words, up and down 13. Everyone has his own whimsy and imagines what he likes. For example, mechanical pencil, multifunctional schoolbags, automatic doors, multi-layer books ... Then, I want to make an automatic household cleaning equipment-duck cleaning.

This automatic household cleaning equipment-duck cleaning has many functions. It has a cleaning function. It loves cleaning, and the cleaning rate reaches 99. 5%—99%。 As soon as it saw the footprints on the floor, the messy room and dirty clothes, it immediately mopped and dried the floor, then swatted flies and washed clothes.

It not only has cleaning function, but also can be used as a nanny. I will also play with children, so that adults can work with confidence. It will take good care of children and teach them hygiene. It will tell them that their dirty hands should not touch their noses, mouths and eyes, so that their eyes and noses will become inflamed and their stomachs will hurt. The little guys nodded.

If adults come home late and children are hungry, washing ducks will help children fry delicious and nutritious food and help them grow up. If children hate studying, the Duck Cleaning Union tells him a joke in Doby. When children are interested, the Duck Cleaning Union releases lessons from his eyes to learn. The teaching speed is adjusted with the difficulty until the child knows it. If the children learn well, reward them with a folk story to make them understand the truth of respecting the old and loving the young.

Look! This is a clean household product I invented-clean duck. Multifunctional, so that parents can rest assured. I really hope it will be helpful in cleaning ducks in the future.

In the fourth grade, I wrote my whimsical composition, 450 words, up and down 14. Everyone has fantastic ideas. Some people want to invent a magical table, some people want to invent a magical paper, I want to invent a magical seed and then cultivate a magical tree. I gave this tree a nice name, called Variety Tree!

The trunk of the ever-changing tree is so thick that it takes ten people to hold it hand in hand. Its leaves are magical, like handfuls of banana fans, which can become bigger and smaller. From a distance, you will feel that the whole tree is a huge umbrella, as if to shelter the earth from the wind and rain!

When people are homeless, there will be huts on the ever-changing trees, hanging from thick branches. When the lights are on, they are like burning lanterns, emitting warm light and heat, making those poor people feel warm in the cold night. When the poor go under the big tree, the branches will stretch down, and then people will come to the hut to have a rest. The cabin gives people unlimited comfort.

When people want to read, the tree will become a big library, and everyone can climb the tree to read. A leaf is a book, you can read it as long as you pick it, and people can swim freely in the sea of books. Young readers may have questions when they see this: What if the leaves are not picked? Don't worry, the new leaves will continue to grow the next day, and the trees will be different every day!

The ever-changing tree is full of magic, and my wish is also beautiful. Can my whimsy really come true? I know that as long as I study hard, I will be able to invent such seeds and cultivate such trees for the benefit of mankind when I grow up!

Write my fancy composition for grade four in 450 words 15 One morning, when the sun scattered the first ray of sunshine on the earth, I had already set off in my new residence. The characteristics of my new house are: novel and beautiful shape, unique decoration, high-tech equipment, and great.

As soon as I pressed the red button next to me, the cloud transporter immediately sent me into the living room. What you see is a room in the shape of a pink lotus. There is a row of flower buttons on the living room wall, which is the controller of the room. It can change the size of the room through the love of the owner. Color and smell. I sat on the floating clouds, talking to the computer about my day's schedule. I looked up and looked around, and the pale pink walls sparkled in the sun. The heat-absorbing glass is as white as jade, and the amber floor emits green light, which is warm in winter and cool in summer.

The house has complete sports and fitness facilities, so I can exercise as I like. The spacious gym has a swimming pool, badminton court, treadmill, volleyball court and so on. The foot is soft grass, and the surrounding walls are sea blue and crystal clear. A quiet library also has some fun. It takes me into the ocean of knowledge and makes me enjoy it to my heart's content. The library is circular, and all the equipment is controlled by computer. As long as you enter the title of the book or a sentence in the book on the computer, the indicator light in front of the bookcase will light up, and the robot will immediately hand you the book to feast your eyes on.

This is my dream house, a great house, and I believe it will have more newer and faster functions in the near future.