2.It + be + -ed分词 ＋ that从句
It is believed that…
人们相信…
It is known to us all that …. 众所周知…
It has been decided that…… 已经决定……
3.It + be + 名词 ＋ that从句
It is common knowledge that… …是常识
It is a surprise that ….
令人惊奇的是…
It is a fact that……
事实是……
4.It + 不及物动词 ＋ that从句
It appears that…
似乎…
It happens that ….
碰巧…
It occurred to me that…… 我突然想起…… 7
连接代词和连接副词在句中既保留自 己的疑问含义、又起连接作用，在 从句中充当从句的成分
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不可省略的连词： 1. 介词后的连词 2. 引导主语从句和同位语从句的连
词不可省略。
That she was chosen made us very happy.
We heard the news that our team had won.
主语从句
subject clause
名词性从句 noun clause
宾语从句
object clause
表语从句
predicative clause
同位语从句
appositive clause
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请判断出下列的句子属于哪种从句
What I want to do iБайду номын сангаас taking a bath. (主从)
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主语从句
在复合句中作主语的从句.引导词有连 词that，whether; 代词：who, what ,which;副词：when ,where, how, why等.
1.That he is a famous singer is known to us. (It is known to us that he is a famous singer.)
The news that they won the game spread the
whole school. (同位语从句) I don’t think he is an honest boy. (宾从)
The fact is that he stole the car. (表从) Do you know the fact that he stole the car?
句内容的不确定性） as if ,as though（均表示“好像”，
“似乎”） 以上在从句中均不充当任何成分
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连接代词：what, whatever, who, whoever, whom, whomever, whose, which, whichever
连接副词：when, where, how, why, whenever, wherever, however
C It is required
D. It requires
2. The Foreign Minister said, “_______ our hope that the two sides will work towards peace.” (2006 北京)
A. This
B. There is
另注意在主语从句中用来表示惊奇、 不相信、惋惜、理应如此等语气时， 谓语动词要用 虚拟语气 “(should) +do”，常用的句型有：
It is necessary (important, natural, strange, etc.) that …
It is suggested (requested, proposed, desired, etc.) that…
C .That is D. It is
3.After Yang Liwei succeeded in circling the earth,_______ our astronauts desire to do is walk in space.(2004 上海)
A .where B .what
2.When he will go to America is not yet fixed.
(It is not yet fixed when he will go to America.)
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1.It + be + 形容词 ＋ that从句
It is necessary / important/ obvious that…
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Exercises
1_________ in the regulations that you should not tell other people the pass word of your e-mail account. .(2005 上海)
A. What is required
B .What requires
(同位语从句)
Do you know the man who is standing over
there?
(定从)
It is said that they won the game. (主从)
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引导名词性从句的连接词： that（无意义，不可省，不充当任何
成分） whether, if（均表示“是否”表明从
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注意 主语从句中的“主谓一致”：
1.主语从句通常被看作一个整体,主句的谓语动词用单数 形式.
That they will come __i_s____certain.
2. What 引导主语从句时,主句谓语动词的单复数由 表语的单复数决定.
What he wants __a_r_e__these books. What he wants ___is___some water.
C .that
D. how
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宾语从句
宾语从句就是在复合句中作宾语的 名词性从句，通常放在主句谓语动词 (及物动词) 或介词之后。
1.She did not know what had happened.
(作动词的宾语)
2. Our success depends upon how well we can cooperate with one another. (作介词的宾语)