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Write a composition to explain the introduction of goods 400
1. 400 words of explanatory composition introducing the article 1. My pencil case When I was in the fourth grade, my mother gave me a beautiful pencil case.

Its oval shell is made of iron, all painted with light yellow paint, which looks like a miniature stage illuminated by lights. The pattern on the lid of the box is a beautiful girl with gorgeous clothes, and a pair of bright eyes look at me kindly, as if to say: We will be inseparable friends in the future.

The back of the pencil case is painted with a lovely red elf, which is very beautiful. When I turn on the small magnet switch of the pencil case, the first thing I see is my class schedule.

There is a yellow "small curtain" under the curriculum. Open the little curtain, hey! My little assistants slept soundly. They were all lying in their "small bedrooms". You see, my pencil and pen are lying on two long "small beds", and no one touches anyone; Eraser lives in a square house; My "Long General" ruler is lying comfortably on the "big bed" specially built for it.

They are tired all day, let them have a good rest! Although my pencil case is usually taciturn, it is quite enthusiastic at the critical moment. As soon as I opened the pencil box, my pen popped out and helped me write my homework neatly. When I start painting, the ruler will lay a straight line for me, so that I can draw the line straight and long; When I write wrong words, the eraser will take the initiative to help me erase the mistakes ... the pencil box serves me faithfully and is my study friend.

I like my pencil case very much. 2. My pencil box I have a beautiful plastic pencil box with exquisite shape and complete functions.

My pencil case, the first half is semi-circular and the second half is rectangular. Our pen cover is made of light blue plastic.

There is a lively and lovely little girl drawing blue sky, white clouds and birds with a brush, and a naughty puppy shaking its head and tail. It seems to be facing the winding river of the little girl. The river is clear and rushing to the distance. There are colorful flowers on the grassland, including wild chrysanthemums, sunflowers, morning glory and many nameless wild flowers. In my opinion, I am dancing with the wind. There is also Fu English in the middle of the pen cover.

The fragrance of flowers attracts beautiful butterflies and golden bees, who jump and sway among the flowers as if a group of children were chasing and playing. My pen cover is a multifunctional cover. It can be used as a cover, a ruler and a protractor in front. Open the front pen cover, there is a small transparent plastic pocket inside, which can be used to insert the curriculum.

There are three black squares in the box, the slender one can hold a ruler, the short one can hold a pen eraser, and the largest one can hold all kinds of pencils, pens and ballpoint pens. My pencil box studies with me every day. It's my good friend and I like it.

3. the self-report of the desk lamp hello everyone, I am the desk lamp in the little master's room. I have a silvery white body, a knob on the lamp holder that can adjust the brightness, and a neck that can be stretched left and right! My role can be great! Every night, the little master will sit at the table, open me and use me to read, draw and do my homework.

Sometimes, his mother uses me to knit sweaters and his father uses me to correct homework. Young master loves me very much, and gives me a "scrub" every week, making me clean and bright.

I tried my best, too. I never "went on strike" angrily. Even if occasionally some minor faults affect my work, the young master will "cure" me with his skillful hands. But there are also many people who don't care about me so much, such as the little master's brother, who often paints my face.

Whenever this happens, Brother Zhong will come to comfort me and say, "Don't be sad, brother. The young master will take care of you." Thinking of this, I feel that I am the happiest desk lamp in the world.

Dear lamp friends, are you happy? 4. Multifunctional computer My computer is not very long, but I like it very much. Let me introduce you! Turning on the computer is a monotonous desktop, but there is a lot of fun hidden inside. Want to relax, no problem, go to the game board in my computer and have a good time! There are all kinds of games in it, such as: swallowing fish, Inca ancient frog, blue alert and so on.

Let me introduce swallowing fish. Swallowing fish is a small game. As soon as you enter the game, you will see a deep blue seabed with rich content. There are many grades for swallowing fish, and each grade is a mark. There are many kinds of fish, such as smart tropical fish, dull old butterfly fish, lantern fish with small lanterns, delicious frog fish and blue whale with big mouth.

Every time you swallow fish, you will change the venue, and there are some extra items in it, such as jellyfish, shells, pearls, mines, corals, starfish, clocks and watches.

This is swallowing fish. Do you like it? Computers can also be used for many purposes, such as searching information online, learning English, listening to music and drawing. Speaking of painting, let me talk about the king of painting in Jinshan. There is a lot of content on it, you can choose pens, and there are many kinds of pens, so you can choose.

You can also choose characters and roles! There are two kinds of characters and roles, one is static and the other is dynamic. Some pictures are naughty and lovely, while others make people laugh and cry.

It is getting late. It's time to say goodbye Oh, I almost forgot to tell you that this computer is Lenovo. The above are several expositions. Since you didn't specify what you wrote, let's simply send a few.

2. Explanatory composition of introducing products 400 words Apple is a kind of fruit that everyone is familiar with. It is chubby and covered with red harvest. Apple is a kind of fruit that grows in the north. The idiom "fruitful" refers to it.

The height of flowering deciduous trees of apple trees can reach 15 meters, and it is generally 3-5 meters high under cultivation conditions. The trunk is grayish brown, the old bark is irregular and the branchlets are smooth. The leaf sequence is simple and alternate, oval to ovoid, and the leaf margin is serrated. Due to the different climate, the flowering period of apples varies greatly. Generally in April-May, there are 3-7 flowers in each bud, and the central flower blooms first. Corymb with white petals, pink buds, 20 stamens and 5 styles. Apple trees begin to bear fruit 2~3 years after planting, and the fruit is kernel, and its color and size vary with varieties.

Apples like light, slightly acidic to neutral soil. There are more than 7,500 known apple varieties. Improved varieties: "Red Star Series", "Red Fuji" and "Jonathan". In addition to fresh varieties, there are apples for cooking. Because the fruit acid of apple has the function of retaining water, it is suitable for baking

Apples contain a lot of pectin, which can reduce cholesterol and bad cholesterol, and can also control diseases such as asthma. Apples are rich in nutrition. It contains vitamins A, C, E, protein, fat, citric acid, phosphorus, calcium, zinc, sodium and other trace elements, and has many functions, such as nourishing brain, enriching blood, sleeping peacefully, moistening lung and pleasing heart. "

3. Introduce an article and write an explanatory article (not less than 400 words). This urgently needed item can be around you, such as study desk, desk lamp, ballpoint pen, mirror, etc. , or everywhere. To grasp the characteristics of the written article, you can describe it from the outside and add your own feelings about it.

Text:

I have been exposed to countless things since I was a child, such as the stars in the sky: a lovely furry bear, a beautiful and practical pen, an old eraser ... but my favorite is the ordinary little desk lamp.

This lovely little desk lamp was given to me by my father the day I entered primary school. At that time, my father said to me earnestly, "Let him study with you in the future. I hope he can be your good partner. "

The small desk lamp has a unique shape: a triangular lamp holder, a slender white light pole, a slender white-gray lampshade supported on the light pole, and ten pearl-sized LED lamp particles embedded in the lampshade. When I turned on the desk lamp, the soft light immediately filled the desk and lit up my book and the small reading room at night. So, I couldn't put it down as soon as I saw it.

Whenever night comes, I begin to concentrate on my studies. The small desk lamp is full of light, standing quietly at the table with me.

Sometimes, I will put a bunch of spring wildflowers next to the desk lamp. Under the light, I wrote the motto "A year's plan lies in spring" in my diary. Sometimes, I will put some autumn leaves on the lamp holder and recite a poem "Teenagers don't know how to study hard early, but white-haired people regret studying late". Year after year, the small desk lamp accompanied me through three seasons, and we became my inseparable friends.

The light of a small desk lamp often encourages me to overcome difficulties. Once when I was studying, I met a difficult math problem, and I couldn't work it out. I was upset, stood up and turned off the light with a bang, and suddenly the room was dark.

The light of the small desk lamp disappeared, and my heart suddenly felt empty. Turning it on again, I seem to feel that the small desk lamp is criticizing me: "Little master, how can you give up easily when you encounter a problem?" Stick to it and you will succeed. "I calm down and reconsider. This time, I changed my mind and felt suddenly enlightened, and finally solved the problem.

The small desk lamp dedicated its light in obscurity, as white as snow, illuminating my book, my desk and my learning path. It is my good friend, and I will cherish it as always.

4. The article describes more than 400 words.

Red, tender, crisp and sweet to eat; Do you know what kind of fruit this is? It is-"Apple".

There are many kinds of apples: ruby, banana, Fuji, Guoguang and Marshal Huang ... countless. It is said that there are about tens of thousands of varieties in the world! Different species have different colors, including red, yellow and light green with red stripes; There are also different shapes, such as round, round prism, egg shape and so on.

Apples are rich in nutrition. Apples are not only rich in sugar, vitamins and minerals, but also rich in zinc. People have long found that eating more apples can improve memory and intelligence. Therefore, Apple is called "the fruit of wisdom" and "the fruit of memory".

Apples also have certain medicinal value. Apples have the functions of lowering cholesterol content, relaxing bowels and stopping diarrhea. The phosphorus, iron and other elements contained in apples are easily absorbed by the intestinal wall, which has the functions of nourishing the brain, calming the nerves and helping sleep. The aroma of apples is a good medicine for depression and depression.

Apples can be used not only as fresh food, but also as fruit salad, apple juice, apple vinegar and canned apples ... cut apples and freeze them in the refrigerator, which is delicious, delicious and refreshing.

Apples are treasures, and they really deserve the reputation of "the king of fruits"!

5. Write an explanatory article about introducing electronic products (within 400 words) and introduce a computer.

Computers are well-known electronic products, but not everyone knows computers. Next, I will introduce computers to you.

Generally speaking, the computer is divided into two parts, one is the hardware system and the other is the software system.

The hardware system is something that can be seen and touched. They are monitor, keyboard, mouse, speaker, camera, host and so on. There are power switch, reset key, hard disk indicator light and power indicator light on the host. The power switch is the biggest button on the host computer, and its function is to turn on and off the computer; The reset button usually restarts when the computer crashes; The small green light of the power indicator will always be on after the computer is turned on; When reading and writing data on the hard disk, the hard disk indicator will light up, indicating the working state of the hard disk.

The software system is invisible and intangible. It controls all kinds of information in the computer, just like all kinds of knowledge in our brain.

Software and hardware are inseparable parts. Without them, the whole computer is useless. Therefore, software is very important to computers and must be indispensable. No matter how good the computer is, if it doesn't have software installed, it is a pile of garbage.

Computers are widely used. It is like a teacher who knows a lot of knowledge. When we encounter a question that we don't understand, we can "ask" it online. He is both a teacher and a friend. When we are bored, we can play games and listen to music online.

Students, after listening to my introduction, do you know much about computers?

There are many unique things in my small room, such as lively dolls, beautiful toys, beautiful flowers, classic fairy tale books, a big bookcase with a microwave oven on it ... but I really don't care about these things. I just like a small alarm clock beside my bed.

This little alarm clock is very cute. Its shape is a robot cat, and its sky-blue body makes it look fat. Under a pair of big white eyes, there is a big red nose, and the curved mouth keeps smiling at you, which is very cute. Inside the robot cat is a big dial with 12 colorful numbers engraved evenly on it. There are four brothers living in the dial. The hour hand is the boss, the minute hand is the second, the second hand is the third and the chronograph hand is the fourth. Of the four brothers, the fastest is the third. Just turn around, the second one moves, the second one has already gone around, and the boss moves. As a result, the three brothers gathered regularly in the dial and dispersed, tirelessly hovering around the robot cat's stomach day and night. Old four is the youngest and laziest. Only when you turn the spring, it moves slowly and unwillingly. If you don't mobilize it, it will stick to its post.

"Lazy people get up, lazy people get up ..." As usual, the small alarm clock urged me to get up. I rubbed my sleepy eyes and looked at my watch. It's only 6: 20 I still want to sleep for a while, so I buried my head in the bed, but when I heard the quick tick of the small alarm clock, I seemed to remember the importance of time, so I rubbed my eyes and got up.

As the saying goes, "an inch of time and an inch of gold can't buy an inch of time." In this way, the small alarm clock always reminds me to cherish time, abide by the work and rest system, and develop good life and study habits. Is my intimate friend who gets along with me day and night, accompanying me on the long road of growth. I like you.-little alarm clock.

7. Write a 400-word article. When I was in the fourth grade, my mother gave me a beautiful pencil box.

Its oval shell is made of iron, all painted with light yellow paint, which looks like a miniature stage illuminated by lights. The pattern on the lid of the box is a beautiful girl with gorgeous clothes, and a pair of bright eyes look at me kindly, as if to say: We will be inseparable friends in the future. The back of the pencil case is painted with a lovely red elf, which is very beautiful.

When I turn on the small magnet switch of the pencil case, the first thing I see is my class schedule. There is a yellow "small curtain" under the curriculum. Open the little curtain, hey! My little assistants slept soundly. They were all lying in their "small bedrooms". You see, my pencil and pen are lying on two long "small beds", and no one touches anyone; Eraser lives in a square house; My "Long General" ruler is lying comfortably on the "big bed" specially built for it. They are tired all day, let them have a good rest!

Although my pencil case is usually taciturn, it is quite enthusiastic at the critical moment. As soon as I opened the pencil box, my pen popped out and helped me write my homework neatly. When I start painting, the ruler will lay a straight line for me, so that I can draw the line straight and long; When writing wrong words, the eraser will take the initiative to help me erase the mistakes. ...

The pencil box serves me faithfully and is my study friend. I like my pencil case very much.

8. Introduce the idea of writing an article of more than 400 words: I wrote two stories between "I" and Youyou to express my love for Youyou. When writing, I should pay attention to the arrangement order of the two things and the transition between them.

I have a yo-yo, which is my favorite. Its body is yellow, and an eagle is painted on one side of the circle. The eagle spreads its wings and is very handsome.

There are many ways to play yo-yo, such as jumping the atomic bomb, traveling around the world, bouncing in the air and so on. When I first learned to play yo-yo, I also suffered a lot. I always accidentally hit myself, and once my hand was scratched. After a long time of practice, I am familiar with the yo-yo game, and now I have learned 10 kinds of games.

My best game is hitting the ball. Once, at school, our classmates 1 1 played a collision game, and I "killed" six people in one breath, but unfortunately, at the last critical moment, my yo-yo got entangled with the yo-yo of the remaining four people, and finally, we died together.

My yo-yo can not only play with me, but also encourage me in my study. Once, I got stuck while writing a composition. At this time, I secretly took a look at my yo-yo. It seems to say to me, "little master, I believe you, and you will definitely write it." My mind was suddenly opened. I picked up a pen, swish swish, and soon wrote a satisfactory composition.

Yo-yo brings me happiness and strength. I love yo-yo, and I hope it can be my lifelong friend.

9. An explanatory article, introducing what you are familiar with, 400-word composition My most familiar Doraemon alarm clock I have a beloved Doraemon alarm clock, which was given to me by my mother on my ninth birthday.

Doraemon on the disk has a big head, round eyes like two black gems, a small red nose, a semicircular mouth under the nose, black beards on both sides of the mouth, which looks more powerful, and a small silver bell hanging around the neck. It always counts the time minute by minute and makes a ticking sound, just like wonderful music in my small room.

Every morning at half past six, it sings loudly: It's time to get up, lazy boy! Wake me up from a sweet dream. I reached out from the warm bed, touched its head and said to it, "I know, little baby." It will stop singing and continue to time.

Every afternoon after school, when I do my homework, it patiently accompanies me, as if to say, "Write your homework carefully!" " "Gradually, I can't hear its tick, and concentrate on my homework. When I finished my homework, it came alive again. " Tick tock, tick tock.

.. "My beloved Doraemon alarm clock accompanies me to grow up happily every day. My most familiar person-mother junior high school composition: narrative reading guides my most familiar person-mother (reproduced) My most familiar person is my mother. She has a kind face and gentle eyes, but the traces of time have left a mark on her face. Whenever I see them, I will think of her concern and love for me.

The person I know best is my mother. She has a kind face and gentle eyes, but the traces of time have left a mark on her face. Whenever I see them, I will think of her concern and love for me. I remember one day when I was in the first grade, my mother asked me to read the text. Not only did I not read it, but I also put a comic book in my Chinese book to lie to my mother. When my mother came to me, I pretended to watch. When she left, I read comic books with relish. I couldn't help laughing when I saw an interesting story. My mother found out about this, and I was worried and ready to be scolded. Recite the second paragraph for me. I blushed. How should I recite it? My mother saw my embarrassment and told me that you should form good habits from an early age, read extra-curricular books after learning, and lay a good foundation from the lower grades. It will become more and more difficult to study in senior grades. If you are not serious now, you will regret it. Mastering knowledge is your own. You cheat like this. The ancients said, "If a teenager doesn't work hard, the old man will be sad."

Do you like it? After listening to my mother, I feel very guilty. Tears of disappointment swirled in my eyes. I think I must correct it. My mother saw my expression and immediately told me to study quickly. When I finished my study task, she enjoyed comic books with me. I am very happy and devoted to my study. From then on, whenever I feel relaxed in my study, whenever I encounter difficulties and want to escape, I will think of my mother's words, and whenever I see a knowing smile on my mother's face because of my progress, I feel very happy.

My mother not only encouraged me in my studies, but also cared for me in every way in my life. One winter morning, the north wind roared and the wind was biting. My mother didn't come home from the night shift. To be beautiful, I only wear a new sweater to school. After class, my classmates and I play on the playground. A north wind blew, and I was shivering with cold. My hands and face are red with cold. I jumped up to get warm, but it didn't help to jump for a while. That's when I want to get involved. Thinking about thinking, suddenly, a warm current spread all over the body. It was my mother who gave me the cotton-padded clothes. She told me to put it on quickly, hugged me tightly and kissed my forehead, telling me not to catch cold. When the students saw this, they all praised my mother's kindness, and I was moved to tears. My mother is like this.

I grow up day by day. Whenever I recall what my mother gave me, I will sincerely thank her. My mother is a kind and amiable person, and I know her best. I will study hard and repay my mother's kindness with excellent results.

There are many unique things in my small room, including lively dolls, beautiful toys, beautiful flowers, classic fairy tale books, a big bookcase with a microwave oven on it ... but I don't really care about these things, I just like a small alarm clock at the bedside.

This little alarm clock is very cute. Its shape is a robot cat, and its sky-blue body makes it look fat. Under a pair of big white eyes, there is a big red nose, and the curved mouth keeps smiling at you, which is very cute.

Inside the robot cat is a big dial with 12 colorful numbers engraved evenly on it. There are four brothers living in the dial. The hour hand is the boss, the minute hand is the second, the second hand is the third and the chronograph hand is the fourth.

Of the four brothers, the fastest is the third. Just turn around, the second one moves, the second one has already gone around, and the boss moves. As a result, the three brothers gathered regularly in the dial and dispersed, tirelessly hovering around the robot cat's stomach day and night. Old four is the youngest and laziest. Only when you turn the spring, it moves slowly and unwillingly. If you don't mobilize it, it will stick to its post.

"Lazy people get up, lazy people get up ..." As usual, the small alarm clock urged me to get up. I rubbed my sleepy eyes and looked at my watch. It's only 6: 20 I still want to sleep for a while, so I buried my head in the bed, but when I heard the quick tick of the small alarm clock, I seemed to remember the importance of time, so I rubbed my eyes and got up.

As the saying goes, "an inch of time and an inch of gold can't buy an inch of time." In this way, the small alarm clock always reminds me to cherish time, abide by the work and rest system, and develop good life and study habits. Is my intimate friend who gets along with me day and night, accompanying me on the long road of growth.

I like you.-little alarm clock.