如: Whoever breaks the law should be punished. (主语从句)
( =Anyone who breaks the law should be punished. )
Whoever breaks the law, he should be punished. (让步状语从句)
( =No matter who breaks the law, he should be punished. )
(4)用连接副词when, where, why, how引导的名词性从句(其连接副词有含义,在句中作状语。)
例如:Where we should leave it is a problem.
When they will come hasn’t been made pubic. 三.由 it构成的主语从句
(1)由连词that引导的主语从句,在大多数情况下会放到句子的后面,而用代词it作形式主语。
例如:That light travels in straight lines is known to all.
=It is known to all that light travels in straight lines.
When the plane is to take off has not been announced .
= It has not been announced when the plane is to take off. (但当what引导的主语从句表示“…的东西”时,一般不用it作形式主语。) 错:It is a book what he wants. 对:What he wants is a book. 另外,需要注意的是,it作形式主语代替主语从句时,要注意和as引导的定语从句的区别。试比较:
It was reported that the US was under the terrorist attack.
As was reported, the US was under the terrorist attack.
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