编辑:
2012-08-24
形容词为necessary, important, impossible, strange, natural, essential时,在“It + be + 形容词或过去分词 + 主语从句”中,主语从句要虚拟。
It is necessary that the problem (should) be discussed at once.
立刻讨论这个问题很有必要。
It is strange that he (should) have so many friends. 太奇怪了,他有那么多的朋友。
6. 主语从句与强调句的区别
注意事项:
1)在主语从句中,把It was … that去掉之后,就已经完全不像一个句子了。
2)在强调句中,把It was … that去掉之后,还基本上像个句子。
3)主语从句有以下的引导词:what,who,whom,whose,which,whatever,whoever,whichever
4)强调句的引导词只有:that, who.
主语从句:
It was strange that he had made a mistake. 如果把,It was … that 去掉以后,剩下strange he had made a mistake.就不算是句子了。
It is immaterial where or when he goes. 他去何处或者何时去是无关紧要的。
It is said that…, 和It is reported that…这样的结构,后面接的是主语从句:
It is said that he‘s got married. 听说他已经结婚了。
强调句:
It was she that had been wrong. 错的是她。(强调主语)如果把,It was … that 去掉以后,剩下she had been wrong.还勉强算的上是一个句子。
It was this novel that they talked about last night. 他们昨晚谈论的是这部小说。(强调宾语)
It was in London that I first saw her. 我是在伦敦第一次见到她的。(强调地点状语)
标签:英语语法
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