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[素材积累]主语从句

楼主#
更多 发布于:2013-12-17 22:44
 
快加入吧!KO.英语战队http://bbs.jd100.com/read.php?tid=687631&fid=409折骨做刀,以梦为马。
歃血订盟,天亮出发!
                          主语从句
用作主语的从句叫主语从句。
(That the earth goes around the sun) is known to all.
(How this happened) is not clear to anyone.
(Whoever comes) is welcome.
(When we shall have our sports meeting) is still a question.
(Whether he will come today) is still unknown.

注意:
1. 主语从句是特殊疑问句,应该用特殊疑问词加陈述句语序。
2. that引导的主语从句放在句首,不可省略that。
3. 主语从句常用it作形式主语,真正的主语放在后面,这时that可省略。
It's a pity (that) you missed such a good opportunity.
It's still a question when we shall buy the new http://dict.hjenglish.com/w/equipment .
It's still unknown whether he will come or not.

4. It is + P.P.+ that ; It + Vi + that,It作形式主语。
It is said that the president will visit our company.
It seems that he has caught a cold.
qwer5rewq
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沙发#
发布于:2013-12-17 22:46
何时运用被动语态:
(1)强调动作的接受者:America was discovered by Columbus.
(2)不知谁是动作的执行者:You are wanted on the phone.
(3)作客观说明:It is said that the meeting has been put off. (经典句型)


主动变被动的基本方法:(说起来容易,掌握起来需要用心!)
(1)主动语态中的宾语变为被动语态的主语。
(2)谓语动词变为由“be + 过去分词”的形式,配合时态作相应变化。
(3)主动语态主语置于介词 by之后,如无必需,则省略。
(4)不及物动词没有被动语态。

现    在  do (does) →am / is / are + done
We keep the piano in the living-room.
→The piano is kept in the living-room.

过    去  did→was / were + done
They built the bridge in 1980.
→The bridge was built in 1980.

将    来  will/shall do → will/shall + be + done
He will read the book tomorrow.
→The book will be read tomorrow.

现在完成 have/has done → have/has + been + done
We have http://dict.hjenglish.com/w/deliver the newspaper.
→The newspapers have been delivered (by us).

过去完成  had done → had been done
She had seen the film before she came here.
→The film had been seen before she came here.

将来完成  will/shall have done → will/shall have + been + done
By the end of this term we shall have finished 80 texts.
→By the end of this term 80 texts will have been finished.

现在进行  am/is/are doing → am/is/are + being + done
They are drawing the picture.
→The picture is being drawn by them.< /p>

过去进行  was/were doing → was/were + being + done
He was reviewing their lessons at this moment yesterday.
→Their lessons were being reviewed at this moment yesterday.

情态动词   may                       may
              can                         can
              must                      must
             should      do   →     should      + be + done
             ought to                 ought to
             used to                   used to
You must write an http://dict.hjenglish.com/w/article on the subject.
→An article must be written on the subject.


测试精编
1. Since the first space http://dict.hjenglish.com/w/mission , many communication satellites ________.
A. was launched      B. are launched      C. have been launched      D. had been launched

2. What kind of advice ________ you?
A. has gave      B. was gave      C. had been given to     D. has given

3. The slave ________ from morning till night.
A. madeto work      B. was made working      C. was made worked      D. was made to work

4. The construction of the http://dict.hjenglish.com/w/laboratory ________ by the end of July.
A. must be completing                 B. must complete
C. must have completed                D. must have been completed

5. Your proposal ________ by the http://dict.hjenglish.com/w/committee soon.
A. is discussed                       B. has been discussed
C. is going to be discussed              D. will have been discussed




KEYS
1. C    2. C    3. D    4. D    5. C
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