Where Animals live
在B站看见了一个系列视频，据说是美国小学生的自然科学课，刚好拿来学一学英语。下面是做的一些笔记以及自己尝试的一些描述。
B站视频地址
A habitat is a place where animals live. There are many kinds of habitats.
Forests are a good habitat for animals to live. In a forest, there are many trees, plants, and food.
In a rainforest there are also many trees and it rains a lot.
The ocean is another habitat. The ocean is a large area of salt water. Many animals that can swim live in the ocean.
In a wetland, there is a lot of water and plants. Its water is salty or not salty.
A grassland is flat and has a lot of grass.
The Arctic and the desert are habitats that are not good for animals to live.
The Arctic is very cold. A desert is very hot and dry. In the desert it does not rain much.
尝试逐句分析：
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A habitat is a place where animals live.
主语是A habitat, 第三人称单数，所以后边用is。A habitat is a place是一句完整的话，后边加where构成了一个从句。 -
There are many kinds of habitats.
There is a kind of habitat.
There is a cat; There are two cats.
There is + 单数 There are + 复数
There are many kinds of fruits; Banana is a kind of fruit. -
Forests are a good habitat for animals to live.
主语是Forests，第三人称复数，所以后面用are。
for somebody to do something, for animals to live. -
In a forest, there are many trees, plants, and food.
there are,后边接了trees,plants和food既有单数也有复数的时候使用are。 -
In a rainforest there are also many trees and it rains a lot.
three are so many trees.are修饰的是后面的trees。 it rains a lot，it指代的是a rainforest,所以rain后边加-s。 -
The ocean is another habitat.
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The ocean is a large area of salt water.
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Many animals that can swim live in the ocean.
Many animals live in the ocean; Animal lives in the ocean. -
In a wetland, there is a lot of water and plants.
// todo -
Its water is salty or not salty.
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A grassland is flat and has a lot of grass.
主语是A grassland，后边用is以及has。
Grasslands are flat and have a lot of grass. -
The Arctic and the desert are habitats that are not good for animals to live.
主语是The Arctic and the desert，they are. that指代的是habitats，所以后边用are. -
The Arctic is very cold.
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A desert is very hot and dry.
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In the desert it does not rain much.
My description:
Habitats are where animals live. Three are many kinds of habitats.
A forest is a common habitat. It has a lot of trees and other plants. Lots of animals live here, such as cheetah, tiger, and fox.
Rainforest is a forest that has a lot of rain.
A grassland is a large, flat(where are no hills and no mountain) area, and it covers by grass. It is kindly of sheep and horses because they are like to eat grass.
A wetland is an area where has land and water(often it is fresh water, but some wetlands have salt water). It's a good habitat for birds.
The ocean is full of salt water, it is large and many fishes live in it.
Deserts have no or little water, they are no rain and full of sand. It is a hot habitat and not good for most animals.
An arctic also does not suitable for most animals. It's full of ice and very cold. Polar bears are a special kind of animals, they live in North polar.
Hermit crabs are also a special kind of animals, they live in other animals' shells. We say that they cover something that gives it shelter and safety.
