In our daily study, work or life, when it comes to writing, we are all familiar with it. Writing is a style composed of words, which expresses a theme through language organization after people's ideological consideration. How to write a thoughtful and literary composition? The following is my carefully arranged composition introducing something for reference only. Let's have a look. Introduce a thing composition 1

The water is constantly flowing and changing. It nourishes everything and nurtures life. It is an indispensable and important friend of mankind.

According to the science book, water is composed of hydrogen atoms and oxygen atoms, and each water molecule contains two hydrogen atoms and one oxygen atom. Its molecular formula is H2O. Pure water is a colorless, odorless and transparent liquid under normal conditions. It is all over the world, and of course, it is also on us. Science shows that there is about 7% water in the human body, and people will not die if they don't eat for several days, but if they don't drink water for several days, the consequences will be unimaginable.

water has a temper, too. It is very changeable. When it is hot, the water will silently turn into steam and run away. Where did you go? It turns into a cloud and floats in the sky. If you encounter cold air, it will turn into rain and return to the ground with a bang. If it encounters cold weather, it will become snowflakes, fluttering and fluttering. When the sun comes out, it evaporates again and takes another trip to the sky. It seems that water is constantly changing at different temperatures.

water has many uses. In our daily life, we need to drink water when we are thirsty, and water when our clothes are dirty ... Nothing can be done without water. We use water for irrigation and power generation, navigation and climate regulation. Without water, human beings can't live.

water is the most abundant compound on the earth. About three-quarters of the world is covered with water, and the total volume of water on the earth is about 1.386 billion cubic kilometers, but 96.5% of it is salt water distributed in the ocean, and the fresh water resources are only about 35 million cubic kilometers.

so, we should cherish every drop of water! Introduce a thing composition 2

A teacup dog is a cute little animal.

A teacup dog is about 1 or 15 centimeters long and 5 centimeters wide. Because it is short, it can be put in an ordinary cup, so people often call it a teacup dog. In fact, when the teacup dog was born from its mother's stomach, it had already been given tea, so it never grew up and weighed only three to four kilograms, which was two to three kilograms lighter than a newborn baby!

The teacup dog has two big eyes as black as a jewel, and its small head is round like a small ball. It often steps on the floor with its little feet dipped in some pigments, leaving little plum blossoms one after another.

once, I went out to eat with my friends, and when I came back, I always felt that I had forgotten something. Suddenly, I felt itchy under my feet. I looked down and saw that it was a puppy. I almost forgot to feed this little cute. I rushed to the kitchen to prepare its food, and I took a bone and some white rice and put it in its small bowl. I just prepared it for it, and it was as fast as lightning. Wang! " Cried twice, as if to say to me, "master, today's meal is really delicious!" " When he finished eating, he stroked his belly and said, "Woof! Wang! " Cried quietly, as if to say, "master, I have eaten. Look, my stomach has become big!" "

this is the cute teacup dog! But it will leave me in a year! Introduce a thing composition 3

In March this year, my parents gave me an advanced high-tech intelligent robot.

it looks like a chariot and a tank. There is a transmitter at the front end, an antenna at the top end, and induction armor and cameras at the front and back, which are very sensitive to control. One battery can play for about 3 minutes, and the combination of multiple batteries can make me enjoy the joy of control.

its most interesting place is the transmission system of the car: a set of McNamham wheels. Creative realization of the left-right translation, the body can easily follow the steering, fast and stable speed. If the car can be replaced with such wheels, you won't have to worry about parking.

its body is sturdy and versatile. The car can be safe and sound in the event of a violent collision. There is a magazine in the fuselage, which can launch crystal bullets. The speed of bullets can reach 26 meters per second, and it can also support 1 bullets per second. It is interesting to be able to emit infrared rays and hit the target accurately. I often team up with my classmates to practice against each other.

it is very "smart". This car can be programmed to complete human-computer communication. I designed a voice control command for it. As soon as you clap your hands, it will come to you immediately. It can also be designed that when someone rings the doorbell, it will quietly go around the target for reconnaissance and send real-time images to my mobile phone synchronously. Its high-tech is also reflected in its 36-degree viewing function, which is what we often call computer vision ability. It can actively follow, I go left, it goes left, I go forward, and it goes forward. Every time we go for a walk together, there are always many people watching and marveling.

after listening to my introduction, are you shocked by its high technology and want to own one? Believe me, it will definitely bring you endless surprises and happiness! Introduce a thing composition 4

I have to write about our little dog. It's called "Wang Wang". It's the youngest dog in our countryside, and its hair is as white as snow. It runs so fast that I can't catch up with it. But "Wang Wang" is very good. It always sits in front and waits for me.

My sister taught Wang Wang to dance, but she can only roll a few times on the ground. It's so corny! However, it does love classes. Once my sister barked a few times like a puppy, and "Wang Wang" came running. I guess "Wang Wang" must think this is his companion! It can still count, but it will only count to three, because my sister taught it.

It likes to hum and bark. "What are you doing? "When Wang Wang was humming in front of me, I asked him. He let out a cry and shook his snow-white head, indicating that he wanted to go to grandma." What do you want to do now? "When we found grandma, I asked her again." Woof, woof, woof, woof, woof, woof, woof, woof, woof, woof, woof, woof, woof, woof, woof, woof, woof, woof, woof, woof, woof, woof, woof, woof, woof! "I complained and walked behind it. I knew what" Wang Wang "wanted to go there. He liked to eat the bones his grandmother gave him. Eat full every time, so that it can sleep while basking in the sun. However, I once put pepper on the meat and took a big bite. The spicy eyes were red like blood, but it was not angry and was still rolling on the ground!

"Wang Wang" likes us very much, and we also like "Wang Wang". My family's "Wang Wang" is really smart, clever and lovely, and is warm and loyal to its owner, which makes me very moved, so I like it and love my puppy. Introduce a thing composition 5

Fish can fly, isn't it amazing? By chance, I learned that there are flying fish in the world, and I became interested in them.

flying fish looks very strange. Their pectoral fins are particularly developed, and their long pectoral fins extend all the way to the tail, which is somewhat similar to the wings of birds. The whole body is like a long shuttle used by people to weave. Their heads are white and their mouths are red, and their backs show cyan texture, which is like carp. The color of their backs is similar to that of the sea, so it is difficult to find them if someone has a bird's eye view from the plane!

flying fish can swim very fast. They keep accelerating underwater. When they swim to the water surface, their fins stick to the streamlined body. Once they break through the water surface, they open their fins and slap their tails in the water quickly, thus gaining extra thrust. When they come out of the water, they glide a few feet above the water at a speed of 16 kilometers per hour. The stronger flying fish can glide 6 feet at a time, and the continuous gliding distance can reach 13 feet in 43 seconds! But we rarely see their graceful gliding posture during the day, because they have many natural enemies, and their posture is usually displayed at night.

Flying fish are small in size, the largest flying fish can grow to more than 2 meters, but most flying fish are only palm-length, so they can only be regarded as little guys in the vast sea. They don't eat much, and only eat some small plankton. Do you know Barbados, a coral island country located in the east of the Caribbean? Hey hey, tell you the truth, this is the "flying fish island" rich in flying fish! Because there are many coral reefs here, which are good places for plankton to live, flying fish come all the way here to enjoy the food. According to the local people, the flying fish can jump 4 meters above the sea surface and glide more than 3 meters in the air at the farthest. Obviously, this is too exaggerated.

Every April and May, flying fish swim from the equator to the inland sea of China to give birth and breed. Therefore, we have the opportunity to see their mysterious figures!

Generally speaking, flying fish is a magical and interesting animal. Introduction to a Thing Composition 6

The giant panda is a national treasure of China and a rare animal unique to China. The giant panda mainly lives in bamboo forests in the mountainous areas of Sichuan, Shaanxi and Gansu.

The giant panda is chubby and chubby. The eyes are dark, as if with a pair of eight-shaped sunglasses; Some of the abdomen is gray, others are brown; Its shoulders, ears, eyes and limbs are all black; The tail is white.

Giant pandas like to take a leisurely walk and play happily on the flat ground. Sometimes look up at the people around you; Sometimes I look down, as if I were looking for something, and as if I were thinking about something. Although it is heavy, it is very flexible and can put its heavy body into various postures. When it is happy, it will somersault on the ground, like a big ball rolling on the ground.

giant pandas like to sleep with their bellies facing the sky. Sometimes I pat my stomach gently with my front paws, and sometimes I kick my legs and turn over to go back to sleep. When I saw it turn over, I thought it was awake, but it was still sleeping. When he woke up, he rolled over, rubbed his sleepy eyes with his front paws, looked at people curiously, staggered to the other side of the railing and sat down, as if trying to clear his head.

When giant pandas eat, they often sit upright, holding bamboo leaves in their forepaws and delivering them to their mouths. It likes to eat fresh and tender bamboo leaves and stems, as well as milk and eggs.

The giant panda is full, and he still needs to drink some water to moisten his throat! You see, it came to the pool, crouched down, held the pool with its paws, and lowered its head to drink water. Look at its appearance, it really makes people laugh.

The giant panda is a precious animal, the darling of the zoo, and its every move is to add fun to tourists. Introduce a thing composition 7

I am a hand warmer with a variety of functions, an angel in the cold winter, and can bring a lot of warmth to people.

I am an oval pink hand warmer. It is about 1 cm long and 5 cm wide. It is small and exquisite. Smooth lines outline delicate borders. I have a lovely little fairy carved on the front, a butterfly on the right, and a line of encouraging words "Come on, little fairy". It is very small and exquisite. At the top of my head, there is a temperature display, and a black display screen in the gold frame can display the temperature degree, and the color of the degree is fluorescent powder. There is also a pink suspender at the top, and the root of the suspender is a five-petal flower with a golden core. The petals are white, so pure white is no less than snow, so the collocation of two colors is so quiet. My appearance girl is full of heart!

It's especially cold in winter, especially in low-temperature areas, but when you have me, it's different. When the cold wind blows outside, you take me out, and the switch is divided into three gears, the first gear is at 45 degrees, the second gear is at 55 degrees, and the third gear is at the highest temperature of 6 degrees. Press the switch in the upper right corner, the temperature will rise rapidly. For such a time, I am like a timely help. My highest temperature can reach 6 degrees Celsius, which is enough to make people warm as spring. I am so small, it is not a problem to hide in my pocket. After half a minute, I can feel the unusual warmth by reaching into my hand.

I am an intelligent rechargeable hand warmer, which is much more convenient than a hand warmer with a new core. I can use it continuously for 8-1 hours after charging once.

I am a hand warmer with high value and great use. It's me. Introduce a thing composition 8

The snake is a frightening and chilling animal. The smallest harmless snake-the blind snake is only the size of an earthworm, while the larger poisonous snake-the king cobra is six meters long.

snakes are reptiles. Snakes are mainly divided into two categories: one is non-venomous, which has sharp teeth like pythons, but has no poisonous glands and cannot secrete venom; The other is poisonous snakes, which have poisonous glands and fangs. There are two kinds of fangs, anterior sulcus and posterior sulcus. The fangs of the anterior groove-toothed snake bend outward, while those of the posterior groove-toothed snake bend inward. Poisonous snakes are not ancient reptiles like crocodiles. If we make a 2-hour movie about the evolution of life on earth, then snakes will appear in the last 5 minutes and poisonous snakes will appear in the last 3 minutes.

Although both non-venomous snakes and venomous snakes prey on rats, their predation methods are completely different: non-venomous snakes bend the first third of their bodies into an "S" shape, and when they see the rats entering the attack range, they quickly attack, trap them, suffocate them and eat them; The poisonous snake will also wait patiently for its prey to enter the attack range, inject 6 mg of venom within 1 second, and then release it.

under normal circumstances, the prey will run away, but it won't go far and it will die. At this time, the poisonous snake will follow the smell, find the mouse and eat it.

after listening to this, you may want to say that snakes must have no natural enemies, then you are wrong. Snakes have three natural enemies: one is the vulture, which can attack the key parts of snakes with its beak; The second is hedgehog; The third is the poison dart frog. After the snake eats the poison dart frog, the poison dart frog will release toxin and poison the snake.

snakes, though not liked by everyone, are friends of human beings, because snakes are beneficial to human beings. For example, domesticated snakes can do things such as guarding homes and even taking care of children for human beings; The whole body of a snake is a treasure, even snake venom is a valuable raw material for medicine; Snakes are good at killing rats and play an important role in protecting crops.

This is the snake, an ugly animal that is of great benefit to human beings. We should protect snakes like all wild animals! Introduce a thing composition 9

It was born in 194 and has a history of many years. It is a British luxury car brand-Rolls Royce. This time, the model I introduced is Rolls-Royce Phantom.

Its length is nearly 6 meters and its width is more than 2 meters. It is a castle. Its front is tall, flat and upright, with a solemn and sacred gas field, and the goddess of flying stands on the front. It has three colors to choose from, namely gold, silver and crystal. Compared with the straight front, this curve of slip back achieves the effect of narrowing the tail. it