题目内容
4．住在这样一个现代化的城市里很舒适．It's comfortable to live in such a modern city．．分析 It's comfortable to live in such a modern city．
解答 答案：It's comfortable to live in such a modern city．结合句意表达的是客观事实用一般现在时，表示做某事是怎样的用it's+adj+to do sth，comfortable舒适的，live in 居住，such a modern city．这样一个现代化的城市，故答案是It's comfortable to live in such a modern city．
点评 It is important to drink enough water every day．
it形式主语，没有意思的，to drink enough water every day真正主语，意思是：每天喝足够的水很重要．你看，主语那么长，而谓语就is important 那么短，是不是头重脚轻啊，为了句子平衡，使用了形式主语，而把真正主语放在后面，所以句型：it‘s+adj+to do 的意思是：做某事怎么样．
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9．从方框中选择适当的单词，并用其适当的形式完成短文，每词只能用一次，每空一词．
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About 75% of all the （77）typesof animals come from rainforests．Thousands and thousands of animals live in rainforests．There are many beautiful birds，insects and reptiles．Many of them live in the trees，over 30meters from the ground．There are also thousands of different plants-and lots of （78）them are tall trees!It is always hot in a rainforest and the ground is always wet．It is also very dark there．
The rainforests are very important for us．We need them!The trees and other plants in the forest help to make the air that we（79）breathe．They also help to control the weather．They give us wood，rubber，fruits and many of our medicines．
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ago there was a large rainforest in Java．There（81）were thousands of different plants and animals in the forest，but now there is （82）nothing．People cut down the trees （83）because they wanted to grow rice．They also wanted to grow rubber trees to make rubber．Many animals lived in the rainforest．Some of them went to other （84）partsof Java，but many of them disappeared-forever．The same thing is （85）happening now in many other parts of the world．The rainforests are in danger!
| they part breath dangerous big be because happen type something |
About 75% of all the （77）typesof animals come from rainforests．Thousands and thousands of animals live in rainforests．There are many beautiful birds，insects and reptiles．Many of them live in the trees，over 30meters from the ground．There are also thousands of different plants-and lots of （78）them are tall trees!It is always hot in a rainforest and the ground is always wet．It is also very dark there．
The rainforests are very important for us．We need them!The trees and other plants in the forest help to make the air that we（79）breathe．They also help to control the weather．They give us wood，rubber，fruits and many of our medicines．
Unfortunately，in many places，the rainforests are in （80）danger．For example，many years
ago there was a large rainforest in Java．There（81）were thousands of different plants and animals in the forest，but now there is （82）nothing．People cut down the trees （83）because they wanted to grow rice．They also wanted to grow rubber trees to make rubber．Many animals lived in the rainforest．Some of them went to other （84）partsof Java，but many of them disappeared-forever．The same thing is （85）happening now in many other parts of the world．The rainforests are in danger!