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| 简 介 |
1、it的基本用法[来源:ZXXK]
（1）用作人称代词，代替前文提到过的事物。
The train has arrived. It arrived half an hour ago.
（2）用以代替提示代词this, that。[来源:学,科,网Z,X,X,K]
—What’s this? —It’s a knife.
—Whose watch is t hat? —It’s mine.
（3）起指示代词的作用，指一个人或事物。
—Who is knocking at the door? —It’s me.
（4）指环境情况等 。
It was very noisy (quiet) at the very moment.
（5）指时间、季节等。
—What time is it? —It’s eight o’clock.
It often rains in summer here.
（6）指距离。
It is a long way to the school.
（7）作形式主语。
It is not easy to finish the work in two days.
It is no use crying over spilt milk.
It is as pity that you didn’t read the book.
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