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［误］New York is much colder in winter than before.
［正］It is much colder in New York in winter than before.
［析］it常常用在英文的句子中来代表时间、距离、天气、自然现象，或用在句中作形式主语或宾语，如：
It is ten o'clock now. (代时间)
It is far from here to the airport. (代距离)
It is very hot.(代天气)
It is very difficult to learn English well. (作形式主语)
We found it very difficult to answer the question. (作形式宾语)
［误］Be careful. Don't drink too many.
［正］Be careful. Don't drink too much.
［析］这里much所代的应是饮料或水，所以应为不可数名词。
(三) 例题解析
1 These are ＿＿＿books. Yours are over there.
A I B my C me D mine
［答案］B.
［析］这里应用形容词性物主代词。
2 —＿＿＿ is she?
— She is a teacher.
A What B How C Who D Where
［答案］A.
［析］这里的四个疑问词放在问句中全都成立，但其意义不同。What is she?应译为“她的工作是什么?”或“她是做什么的?”而How is she?应译为“她身体如何?”而Who is she?应译为“她是谁?”其答语应为“她叫什么名字。”而Where is she?应为“她在什么地方?”由答语决定了这道题的选择。
3＿＿＿ is wrong with my watch. It has stopped＿＿＿.
A Something, working B Something, to work
C Any thing, working D Anything, to work
［答案］A.
［析］因为是肯定句所以应用Something,其后由于表停止工作了，则stop后要用动名词。
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