2016年00015英语(二)复习资料-串讲笔记第二部分:系动词2

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4.系动词后面带介词词组

    Their wedding will be in late June.

    The shop stays round the clock.

    Impersonal It

    it在句中可以作代词,代表刚提到的东西或一个彼此都知其所指的东西;此外它还可用来代表时间、天气、自然环境、距离等。it还有一个很重要的用法,那就是作先行词,代表句子的实际主语或宾语;它也可以用来改变句子结构,使句子的某一成分得到强调。

5.作句子的形式主语

(1)代表不定式

    It’s absurd to be afraid under such circumstances.

    It’s a great privilege to know you.

(2)代表动名词

    It’s no using crying over split milk.

    It’s no good waiting for him this morning.He won’t come back until five in the afternoon.

(3)代表that引导的从句

    It is believed that he is one of the best piano players in the world.

    It is suggested that he (should) be sent to hospital immediately.

(4)代表wh引导的从句

    As long as he finishes his work,it doesn’t matter when he comes to the office.

    It has not been decided yet whether or not I should go on with my study.