1. 主语从句

主语从句( if除外)

一定义：在复合句中充当主语的句子，叫主语从句；位于句首。

二：读例句，理解句意，思考，分析，总结。

1：连接词that 引导的主语从句：

EG:1）That you are so angry bothers me. 你如此生气使我很烦恼。

2）That she survived the accident is a miracle.她在事故中幸免于难简直是奇迹。

3）It was a pity (that) you didn’t go to the talk.很遗憾你没有去听报告。

4）That he has moved to New York is not true.= It is not true that he has moved to New York. 5）That the earth is round is true.= It is true that the earth is round.

总结：在连接词that 引导的主语从句中，that ___含义，在句子___做成分，__省。EX: 1)______ he will succeed is certain. 2) ________ you didn’t go to the park was a pity.

3) ______ you will win the medal seems unlikely.

2: 连接词whether引导的主语从句。

EG: 1）Whether wild life can be well protected is of great importance.

2）Whether Mary really heard him is really doubtful.

3）Whether it will do us harm remains to be seen. 是否对我们有害还要看一看。

4）Whether he will come hasn’t been decided.= It hasn’t been decided whether he will come.

总结：在连接词whether 引导的主语从句中，whether__含义，____做成分，__ 省。EX: 1) ______ she is coming or not doesn’t matter too much. 她来不来都无关紧要。

2) ______ they would support us was a problem. 他们是否会支持我们还是一个问题。

3) _______ to hold the meeting has not been discussed.

3：在连接代词（who,whom,whose,which,what,whoever,whomever,whichever,whatever）引导的主语从句中。

EG: 1）What is needed for the space trip is careful preparation.

2）Who will be sent to carry out the task has been settled.

3）Whom she borrowed money from still puzzled me.

4）Which side will win is not clear.

5）What I want to know is this.

6）Whoever breaks the law will be punished.( _____ 从句)

= Anyone who breaks the law will be punished . ( _____ 从句)

比较：Whoever breaks the law , he should be punished. ( _____ 从句)

= No matter who breaks the law, he should be punished. ( _____ 从句)

总结：在连接代词引导的主语从句中，连接代词__含义，___成分，做___语、___语、___语，_____ 省。

EX: 1) ___ will go makes no difference.2) ___ kind of food is the best is still not certain.

3) _______ comes is welcome. 4) ______ you need is more pratice.

5) _____he did is right. 6) _____ killed the scientist remains a question.

4: 在连接副词（when, where ,why, how）引导的主语从句。

1)Where we should put it is a problem.

2)How we can help the twins will be discussed at the meeting.

3)When they ‘ll start the project has not been decided yet.

4)Why dinosaurs died out remains a puzzle.

5)Why he didn’t come here is not clear to anyone.

= It is not clear to anyone why he didn’t come here.

6)When they are going to get married remains unknown.

= It remains unknown When they are going to get married .

总结：在连接副词引导的主语从句中，连接副词___含义,___成分，做___语,____ 省。EX: 1) ____ he is often late is still unclear.

2) ____ they will come hasn’t been made public.,

3) _____ it was done remained a mystery.

4) ____ he hid the money is to be found out.

三：固定句型：（借助形式主语it, 主语从句不能提前）。

1）It is + 名词/ 名词短语（a pity/ shame; a wonder; no wonder; a /no surprise; an honur; good news; a good thing; one’s duty ; a fact）+ that 从句。

It is a fact that... 事实是.... It is good news that.... ....是好消息。

It is a question that... ...是个问题It is common knowledge that... ... 是常识。EG:It is a mystery to me how it all happened.这一切是怎么发生的是个谜。

It is common knowledge that the whale is not a fish.

It is no surprise that Bob should have won the game.

It is a wonder that you are leaving.

It is a pity that we didn’t go to the Olimpic Games.

It’s no surprise that our team should have won the game.我们没赢这场比赛真意外。

2) It is +形容词（strange/necessary/ essential /important;natural;obvious/clear/evident; true/right/wrong;wonderful/good/bad;(im)possible/(un)likely;unusual;certain/doubtful ;surprising/shocking/satonishing;interesting,etc）+that 从句...

It is necessary that.... 有必要....It is clear that..... 很清楚....

It is likely that.... 很可能.... It is important that ....重要的是......

EG: I t is doubtful whether she will be able to come.她是否能来令人怀疑。