高中英语：主语从句教案人教版必修3

班级：_____姓名：_____
名词性从句系列讲解和练习（主语从句）
教学目标：理解主语从句的概念，掌握其基本用法，并在作文中熟练使用。

教学重点：that, whether, what, how, who, why, where, which, when，whose, whom, what引导的主语从句的正确使用。

教学难点：后置主语从句（it作形式主语放在前面；that引导主语从句放在后面）的使用；
that和what用法的区别。

基本定义：在复合句中用作主语的从句。

构成：关联词+简单句
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
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