主语从句
subject clause
宾语从句
名词性从句 noun clause
object clause
表语从句
predicative clause
同位语从句
appositive clause
请判断出下列的句子属于哪种从句 What I want to do is taking a bath. (主从) 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? (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)
Exercises: “it”作形式主语或形式宾语：
A 1.I hate ____ when people talk with their mouths full． A. it B. that C. these D. them B 2. I feel ____ strange that he should be so careless. A. / B. it C. that D. how B 3. It worried her a bit ____ her hair was turning grey. A．while B. that C．if D．for 4 Will you see to ____ that the luggage is brought back? C A. we B. yourself C. it D. them
1.It + be + 形容词 ＋ that从句
It is necessary / important/ obvious that…
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……
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 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
连接代词：what,
whatever, who, whoever, whom, whomever, whose, which, whichever 连接副词：when, where, how, why, whenever, wherever, however 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
表语从句 在复合句中作主句的表语.引导表语从句的关 联词与引导主语从句的关联词大致一样
1.问题是我们和他已失去联系.
The problem is_________________________________ that we have lost touch with him.
2.这就是亨利怎么解决这个问题的.
4.It + 不及物动词 ＋ that从句
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…

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)
1.That he is a famous singer is known to us. (It is known to us that he is a famous singer.) 2.When he will go to America is not yet fixed. (It is not yet fixed when he will go to America.)
用whether或if引导的宾语从句， 其主语和谓语的顺序也不能颠倒， 仍保持陈述句语序。此外， whether与if 在作“是否”的意思 讲时在下列情况下一般只能用 whether，不用if： a. 引导主语从句并在句首时；b. 引导表语从句时；c . 引导从句作 介词宾语时；d. 从句后有“or not” 时；e. 后接动词不定式时。
1.
注意：在demand，order，suggest，
decide，insist, desire, request, command, doubt等表示要求、命令、 建议、决定等意义的动词后，宾语从 句常用“（should）+ 动词原形”。 I insist that she (should) do her work alone. 我坚持要她自己工作。 The commander ordered that troops (should) set off at once. 司令 员命令部队马上出发。
This is____________________________. how Henry solved the problem.
我认为他不会来这里. I think he won’t come here. I don’t think he will come here.
( (
) )
注意宾语从句中的时态呼应，当主 句动词是现在时，从句根据自身的句 子情况，而使用不同时态。例如： I know (that) he studies English every day. I know (that) he studied English last term. I know (that) he will study English next year. I know (that) he has studied English since 1998.
2.It + be + -ed分词 ＋ that从句
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…… It appears that… 似乎… It happens that …. 碰巧… It occurred to me that…… 我突然想起……
4.
当主句动词是过去时态（could, would除外），从句则要用相应的 过去时态，如一般过去时，过去进 行时，过去将来时等；当从句表示 的是客观真理，科学原理，自然现 象，则从句仍用现在时态。例如： The teacher told us that Tom had left us for America．
不可省略的连词：
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.
1.
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.
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 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 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 C .that D. how
宾语从句中用it作形式宾语
注意：如果主句中有形容词或名词作宾语补足 语时，一般用it来作形式宾语，把从句放在宾 补后面。 We think it our duty that we should help others. 我发现他两天之内完成工作是不可能的.
I find it impossible that he can finish the work in two days.
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.