成人英语三级考试语法基础知识:主语从句

发布于 2018-02-24 16:44  编辑:Candice
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1.定义:用作主语的从句叫做主语从句。

2.构成:关联词+简单句

3.引导主语从句的关联词有三类:

(1)从属连词that.

如:That they were in truth sisters was clear from the facial resemblance between them. 很明显,她们确是亲姐妹,她们的脸型很相似。

(2)从属连词whether。如:Whether he'll come here isn’t clear. 他是否会来这里还不清楚。

(3)连接代词who, whom, whose, what, which, whoever, whatever, whichever

连接副词where, when, how, why.如:

What she did is not yet known. 她干了什么尚不清楚。

How this happened is not clear to anyone. 这事怎样发生的,谁也不清楚。

Whoever comes is welcome. 不论谁来都欢迎。

Wherever you are is my home-my only home. 你所在的任何地方就是我的家——我唯一的家。


难点释疑:

1.主语从句能用it作形式上的主语。常以it作形式主语的句型有:

A. It+be+形容词(obvious, true, natural, surprising, good, wonderful, funny, possible, likely, certain, probable, etc.)+that从句。如:

It is certain that she will do well in her exam. 毫无疑问她考试成绩会很好。

It is probable that he told her everything. 很可能他把一切都告诉她了。

B. It+be+名词词组(no wonder, an honour, a good thing, a pity, no surprise, etc.)+that从句。如:It's a pity that we can't go. 很遗憾我们不能去。

It's no surprise that our team should have won the game. 我们没赢这场比赛真意外。

C. It+be+过去分词(said, reported, thought, expected, decided, announced, arranged, etc.)+that从句。如:

It is said that Mr. Green has arrived in Beijing. 据说格林先生已经到了北京。

It is reported that China has sent another man-made earth satellite into orbit. 据报道中国又成功地发射了一颗人造地球卫星。

D. It+seem, happen等不及物动词及短语+that从句。如:

It seems that Alice is not coming to the party at all. Alice似乎不来参加晚会。

It happened that I was out that day. 碰巧我那天外出了。

E. 当主语从句出现在感叹句中时,要以it作形式主语,而把主语从句后置。如:

How strange it is that the children are so quiet! 孩子们这么安静真奇怪!


2.注意连接代词whoever, whatever, whichever等引导主语从句的含义:

Whoever comes will be welcome. (whoever=the person who) 来的人将受到欢迎。

Whatever he did was right. (whatever=the thing that) 他所做的事情是正确的。

Whichever of you comes in will receive a prize. (whichever=anyone of you who)

你们当中不论哪个进来将会得到奖励。


考生们记得要抓紧时间练题。

更多成人英语三级考试试题在这里>>>成人英语三级考试练习题库


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