高中英语名词性从句系列讲解和练习(主语从句)

练习（主语从句）

一、.关联词分类和基本句型：

(1)从属连词that。如：That they were indeed 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。

______ we need more equipment _____ quite obvious. 我们需要更多的设备，这是很明显的。

(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。

______ he will join us won't _____ too much difference.他是否和我们一起干无所谓。

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

连接副词where, when, how, why。如：

What you need is more practice. 你需要的是更多的练习。

Whoever wants it may have it. 谁要都可以给他。

_____she did ____ not yet known. 她干了什么尚不清楚。

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

______ comes _____ welcome. 不论谁来都欢迎。

二、主语从句后置：

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。

_____ _____ probable ______ 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 _____ ______ that we can’t go.很遗憾我们不能去。

It’s ______ _______ 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 ______ ______Mr. Green has arrived in Beijing. 据说格林先生已经到了北京。

It is ______ _______ 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。

_____ _______ ______ I was out that day. 碰巧我那天外出了。

E.It+doesn’t matter (makes no difference, etc.)+连接代词或连接副词引起的主语从句。如：

It doesn’t ______ _______ she will come or not. 她是否来这无关紧要。

It _____ _____ difference ______ we shall have the meeting. 我们在哪里开会毫无区别。

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

_______ comes will be welcome. (whoever=the person who) 来的都是客。

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

________ _____ ______ 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。

四、主语从句与虚拟语气：

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 ( ______ ) _____ ________ at once.

立刻讨论这个问题很有必要。

It is strange that he ( _____ ) have so many friends. 太奇怪了，他有那么多的朋友。

五、在高考题中考查的主语从句：（以下来自全国各地高考试卷）

1. It has been proved _________ eating vegetables in childhood helps to protect you against serious illnesses in later life.

A. if

B. because

C. when

D. that

2. ________ matters most in learning English is enough practice.

A. What

B. Why

C. Where

D. Which

3. ______ parents say and do has a life-long effect on their children.

A. That

B. Which

C. What

D. As

4. ________ puzzles the scientists how these creatures can survive in such severe conditions.

A. What

B. As

C. That

D. It

5. _____ leaves the room last ought to turn off the lights.

A. Anyone

B. Who

C. Whoever

D. The person

6. ______ you will be admitted to York University will be decided by the Admission Committee.

A. That

B. Whether

C. What

D. If

7．_______your father wants to know is________ getting on with your studies.

A. What; how are you

B. That；how you are

C. How；that you are

D. What；how you are

8.________he really means is ________he disagrees with us.

A. What …that

B. That …what

C. What …what

D. That …what

9.We sell handmade gifts. _____gift you order from us is unique for the special person!

A. Which

B. That

C. Whichever

D. What