高一英语 主语从句2

7. 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。例如：
1) What you said yesterday is right.
What在此引导主语从句,又做said的宾语
2) That she is still alive is a consolation.
It doesn’t matter whether she will come or not.
It makes no difference where we shall have the meeting.
3) It +及物动词（被动语态）+主语从句
It has been decided that the exhibition will not open on Sundays.
Grammar
What part does the underlined part serve as in each sentence?
A tree has fallen across the road. You are a student. To find your way can be a problem. Smoking is bad for you.
the earth, __(_B_)___ our astronauts desire to
do is walk in space. （04上海）
A. where B. what C. that D. how
3. (B）Fashion differs from country to
country may reflect the cultural differences from one aspect. (00上海）
“How do you do?” is a greeting. What she said is not yet known. That we shall be late is certain. It is certain that we shall be late.
Make sentences
3)连接副词when，where， how， why等。
Why he did it remains a mystery. When they will start is not known yet. How he became a great scientist is known to us all.
3. _W__h_e_th__er_ the 2000 Olympic Games will be held in Beijing is not known yet.
4. _W__h_e_th__er_ we’ll go camping tomorrow depends on the weather.
That they haven’t phoned is strange.
(3)that引导的主语从句中，that不可被省略
That price will go up is certain.
6. It 作形式主语和it引导强调句的比较
It 作形式主语代替主语从句，主要是为了平衡句 子结构，主语从句的连接词没有变化。而it引导的强 调句则是对句子某一部分进行强调，无论强调的是 什么成分，都可用连词that。被强调部分指人是也可 用who/whom。例如：
It is 4.No matter who leaves the room last ought
Biblioteka Baidu
to turn off the lights.
Whoever
5.It is important that a student learns a
foreign language.
should learn
Describe your mother with your partner.
It’s certain . we’ll be late.
It’s certain that we will be late. That we’ll be late is certain.
Is he coming or
not ？
We don’t know
We don’t know whether he is coming or not
5. _W__h_o_e_v_e_r leaves the room last ought to turn off the lights.
动词原形\”的形式, should有时可以省略。
5. 主语从句需注意的问题
(1)主语从句中用陈述语序
What she is afraid of is their taking her to Paris. ( What is she afraid of … Wrong )
(2)主语从句后谓语动词用第三人称单数
That 只起连接作用,不做成分
改错练习
1.Where shall we spend the holiday isn’t decided. we shall
2.You have made a mistake is a fact. That you have
3.That is certain that we can win.
4) . 用于It is important / natural / necessary / impossible that... 句型中, 主语从句应使用虚拟语气, 谓语动词用\“should + 动词原形\”的形式, should有时可以省略。
5) 在It + be+suggested/advised/ordered/requested/ insisted/required 中, that从句的谓语也应该用\“should +
1. I read about it in some book or other, does it
matter （___D_）___ it was? （01北京春季)
A．where B．what C．how D．which
2. After Yang Liwei succeeded in circling
2）It+不及物动词+主语从句 It seemed (happened, doesn’t matter, has turned out) that…
It happens that they were absent. It seems that Alice is not coming to the party at all.
定义： 用作主语的从句叫主语从句，它是名
词性从句之一。引导主语从句的连接词有：
连词that, whether；连接代词who, what和which；连接副词when, where, how和why。
主语从句：
做主语用的名词性从句，因其在复合句中做 主语，又称主语从句，引导主语从句的有连 词that ，whether， 连接代词who ，what ， which， 连接副词when，where， how， why等。
It is a pity that you didn’t go to see the film. It doesn’t interest me whether you succeed or not. It is in the morning that the murder took place. It is John that broke the window.
Suggested structures: What my mother likes is_________________. What my mother doesn’t like is _____________________ Whether my mother would fell happy is _______________ Why my mother would be happy is _________________ Why my mother feels upsad is______________________
A. What B. That C. This D. Which
1. _T_h_a_t_ you don’t like him is none of my business.
2. _W__h_a_t he said at the meeting astonished everybody present
Whether it will please them is not easy to say.
2)连接代词who ，what ，which, whatever, whichever, whoever
What seems easy to some people seems difficult to others. Which side will win is not clear.
It is an honour that I was invited to attend the meeting.
It is certain that she will do well in her exam. It is true that I told her everything.
It is said that Mr. Green has arrived in Beijing. It is reported that China has sent another manmade earth satellite into orbit.
2.位置： 主语从句可以前置，也可以 后置。用it做形式主语，而把主语从 句，在句末，常用下面几种句型。
1）It + be + 表语 +主语从句 表语：（名词， 形容词，过去分词）
It is a fact (a shame, a pity, good news…) that…
It is still uncertain whether he is coming or not.
When will you come back?
It doesn’t matter.
When you will come back doesn’t matter.
It doesn’t matter when you will come back.
主语从句 （Noun Clauses as the Subject）
natural. 正：It is natural that they should like
each other. 2)如果主语从句放在句首，不能用if引导，但 是如果用it 做形式主语，而把主语从句放在 句末时，也可以用if引导.
误：If Mary really heard him is really doubtful. 正：It was doubtful if Mary really heard him.
Whether he is coming is not known.
What does he want
to tell us?
We don’t know what he wants to tell us.
We don’t know
What he wants to tell us is not known.
注意:
1）主语从句在句首时，必须由连接词引导， 不能省略这些连接词；但是如果用it做形式 主语，而把主语从句放在句末时，从属连词 that可以省略。
误：They should like each other is natural. 正：That they should like each other is
1.连接词：
1）从属连词：that， whether等. that 引导主语从句只起引导作用，本身 无实际意义，在主语从句中不充当任何 成分，但不能省略。
That she left him cut him to the heart.
That he will come is certain.
由whether及其他连词引导的主语从句 放在句首，句后都可。