人教版高中英语必修3 Unit 4 Astronomy 语法：主语从句 课件（共16张）

(共16张PPT)
主语从句Grammar
Company Logo
Subject (主语)
1
2
3
7
5
Smoking is bad for you.
To be a good teacher has always been my dream.
You are a student.
Company Logo
Subject clause (主语从句)
That Wang Yan is a boy is well-known.
What makes me feel happy is being with my students.
It is well-known that Wang Yan is a boy.
How I can find a nice girl is a headache.
主语从句
主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前；或由形式主语it代替，而本身放在句子末尾。引导主语从句的连接词有：连词that, whether；连接代词who, what和which等；连接副词when, where, how和why。
注：if不能引导主语从句
that, whether ?
_______?he’ll?come?here?isn’t?clear.??
_______ price will go up is certain.
________ we go by train or by boat makes no difference.
Whether
That
Whether
* that和whether不充当任何成分，都不可以省略。
* 句子意思确定，用that，不确定用whether
连接代词
_________ matters most in learning English is enough practice.
_________ will write the poem has not been decided yet.
_________ comes?is?welcome.
?
who,?whom,?whose,?what,?which
whoever,?whatever,?whichever ?
Who
Whoever
What
* who – “谁”
* whoever – “无论…的人”
______ this?happened?is?not?clear?to?anyone.?
______ he will be back depends on the weather.
______ we live doesn’t matter.
连接副词
where,?when,?how,?why …
How?
When
Where
主语从句的规律
正：When he will come is not known.
找出下列句子中的错误，并总结出规律：
规律一、主语从句一律用陈述句语序,即主语在前,谓语在后.
例1、When will he come is not known.
规律二、连接词that在从句中无实际意义,但不能省略.
例2 He will not come to the meeting this evening is true.
正: That he will not come to the meeting this evening is true.
主语从句的规律
规律三、 whether可以引导主语从句, 放在句首，但if不能.
例3、If the meeting will be put off has not been decided yet.
2.主语从句的规律
正：Whether the meeting will be put off has not been decided yet.
主语从句的规律
规律四、whoever, whatever, whichever等词可以引导主语从句, 但no matter who, no matter what 等不能，它们只能引导让步壮语从句.
Whoever breaks the rule can’t get away with it.
1、任何一个违规的人都会受到惩罚。
No matter who breaks the rule, he must be punished.
2、不管是谁违反了规定，都要受到惩罚。
Translation:
主语从句的规律
主语从句的规律
That he will not come to the meeting this evening is true.
Whether the meeting will be put off has not been decided yet.
When he will come is not known.
规律五、主语从句后谓语动词用第三人称单数
　　what 与that 在引导主语从句时的区别
what 引导主语从句时在句时在从句中充当句子成分，如主语．宾语．表语，而that 则不然。：
1) What you said yesterday is right.

2) That she is still alive is a consolation.
Complete the sentences using what, whether, where, when, who, why, how or that.
１.(_____ is needed for success) is your hard work.
2.(________ it will rain or not) is not clear.
4.(______ the earth is a solid ball) is known to us all.
What
Whether
That
3. (____ the earth is becoming warm) is a good topic for research.
Why
1. ______ we will go camping tomorrow depends on the weather.
A. If B. Whether
C. That D. Where
2. _______ that they can pass the written exam this time.
A. That is hoped B. It is hoped
C. It hopes D. That hopes
Exercise
3. It was doubtful ____ Mary really heard him.
A. that B. if C. whether D. what

4. _____ made the school proud was______ more than 90％ of the students had been admitted to key universities.
　A. What; because B. What ; that
　C. That ; what D. That ; because