高考英語復習指導：It作人稱代詞的用法
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1、it代替前面(或后面)的單數名詞或分句等所表示的事物。
e.g. You cannot eat your cake but have it.(it代替前面的cake)
Although we cannot see it, there is air all around us. (it代替后面的air)
They say he has left town, but I don't believe it. (it代替前面They…town分句中的情況)
2、代替有生命但不能或不必分陰陽性的東西(包括嬰兒)。
e.g. Yesterday we saw a big tree. It was fully twenty metres high. (it代替前面的tree)
The baby cried because it was hungry. (it代替前面的baby)
3、在某些習慣說法中，可以代替人。
e.g. ---- Someone is knocking at the door, Peter. ---- Who is it? ---- It's me.
---- Who are singing? ---- It is the children.
---- The light is still on in the lab. It must be the third-year students doing the experiment.
4、it與one的區別：這兩個詞都可以代表前面說過的名詞，但it用于同名同物的場合;one則用于同名異物的場合。
e.g. ---- Do you still have the bicycle? ---- No, I have sold it.
---- Is this knife yours? ---- No. It is Xiao Zhang's. Mine is the one on the desk.
5、it與that的區別：兩詞都可代替某一特定名詞，但that指同一類，并非同一個。
e.g. The climate of South China is mild(溫和的); I like it very much.(it指the climate of South China)
The climate of South China is much better than that of Japan.(that指the climate)
(責任編輯：郭峰)
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