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1、精品资料欢迎下载名词性从句主语从句、表语从句、宾语从句和同位语从句在复合句中的作用相当于名词，因此这种从句叫名词性从句。（一）主语从句主语从句是在复合句中充当主语的从句。一. that引导的主语从句that 引导主语从句时， that 不做成分，也没有意义，但不能省略。that 引导的主语从句可用形式主语it 代替，而把 that 从句置于句尾。That light travels in straight lines is known to all.众所周知，光沿直线传播。可转换为： It s known to all that light travels in straight lines.
2、 it 用作形式主语，代替主语从句的句型。 it+be+形容词 +主语从句（这类形容词有probable ,evident ,likely, possible ,important, necessary ）It is certain that free medical care will be given to most people in our city. （译） it+be+名词词组 +主语从句（这类名词有a shame ,a pity, an honour 等）It is a pity that you missed the exciting football match. it+be
3、+过去分词 +主语从句（ announced, believed, reported, said, expected 等）It is said that Li Hao has been to Europe. It + 不及物动词 +主语从句，这类不及物动词有（seem, happen, appear ）It seemed that h e didn t tell the truth.二. whether引导的主语从句whether意为“是否”，在从句中不担当句子成分。Whether life exits on other planets is not clear. 其他星球上是否存在生命不清楚
4、。三. 连接代词引导的主语从句 , 在从句中担任主语、宾语，表语或定语。Which plan is better should be discussed. 应该谈论哪一个计划更好Whoever comes to China is welcome. 无论谁来中国都欢迎。四. 连接副词引导的主语从句 , 在从句中担任状语。When and where we will hold the meeting hasn t decided 我们何时何地举行会议还没决定。精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 1 页，共 8 页精品资料欢迎下载学习主语从句
5、应注意：1. 主语从句的语序 :主语从句为陈述语序，而不是疑问语序。What surprised me most was that the little girl could play the violin so well。使我感到惊讶的是这个小女孩的小提琴拉得这么好。2. 主语从句的主谓一致由 that，where，when，why，how，whether，whenever 等引导的单个名词性从句作主语时，主句的谓语通常用单数形式。That we need more books is quite obvious. 我们需要更多的书，这是很显然的但由 and连接的多个从句作主语时，主句的谓语通
6、常用复数形式。What you said and what you did were different 。你言行不一。（二）宾语从句在复合句中作宾语的名词性从句叫宾语从句。宾语从句的引导词有：连词that，if/whether; 连接代词 who,whom,whose,what,which,whoever,whatever,whichever; 连接副词 when, where, how, why 等。一 宾语从句的种类1. 动词的宾语从句He doesno t know where the post office is.他不知道邮局在哪里。Make sure all the lighta
7、are turned off before you leave. 走之前务必要关灯。2. 介词的宾语从句通常情况下介词之后只能接wh-类连接词引导的宾语从句，少数几个介词加except,but,beside,in 等后可接 that引导的宾语从句。Did she say anything about how we should do the work? 关于这工作我们该怎么做她说什么没有？3. 形容词的宾语从句在 sure,certain, afraid, glad, happy, surprised, pleased, confident 表示情感的形容词后可接宾语从句。I am afrai
8、d that I have made a mistake. 恐怕我犯了一个错误。She is very glad that she has passed the exam. 她很高兴她考试及格了。二 学习宾语从句应注意精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 2 页，共 8 页精品资料欢迎下载1. it 做形式宾语在动词 (短语) enjoy, love, hate, appreciate, see to, insist on, depend on , rely on 等带宾语从句时，习惯上在从句前加形式宾语it。I will apprcia
9、te it if you can give me a hand. 如果你能帮我一把，我会很感激。2. 宾语从句的语序：宾语从句不论有连接代词还是连接副词引导，都要用陈述句语序。Can you tell me who he is ? 你能告诉我他是谁吗？3. 宾语从句的时态若主句是现在时，则宾语从句时态不限，可视情形使用所需要的时态。若主句是过去时，则宾语从句应与主句时态保持一致，即用过去时态的适当形式。I hear that Wen Bo will go to American next year. 我听说文博明年要去美国。Mike told me that he had had lunch/
10、 he was having lunch/ he was going to have lunch. 迈克告诉我他吃过午饭了/他在吃午饭 /他打算吃午饭。（三）表语从句表语从句放在系动词的后面，在复合句中做句子的表语。引导表语从句的词有：连词that, whether, as if; 连 接 代 词 who(whom), what, which, whose, whoever(whomever), whatever, whichever; 连接副词when, where, why ; as, because 也可引导表语从句注意：在表语从句，表示“是否” ，用 whether, 不能用 if。T
11、he problem is whether it is true.问题是它是否是真的。that 在表语从句中不做成分，不可省。Our plan is that we ll go there once a week. 我们的计划是我们一周去哪里一次。that s why 引导表语从句：“那就是 的原因” （跟结果）That was why I came late. that s because 引导表语从句：“那是因为 ” （跟原因）That was because I got up late. the reason why引导定语从句：“的原因是 ”The reason why I came
12、late was that I got up late. （四）同位语从句精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 3 页，共 8 页精品资料欢迎下载一 定义在复合句中， 跟在一个名词后， 对其进一步解释说明的从句叫同位语从句。同位语从句一般跟在某些名词的后面，用以解释说明前面名词的内容。 后面常跟同位语从句的名词有： advice，proposal，suggestion（建议），belief（信仰） ，chance（机会） ，decision（决定） ，fact（事实） ，idea ，opinion（观点） ，message （信息） ，n
13、ews，word（消息） ，plan（计划） ，possibility（可能性），thought（想法） ，wish（祝愿） ，promise（承诺） ，order（命令） ，theory（理论） ，doubt（怀疑）等。There is no doubt that the price of wheat will go up 。毫无疑问，小麦的价格将会上涨。三 同位语从句和定语从句的区别The news that China won the game made me excited。中国赢得比赛的消息让我很是激动（同位语从句）The news that you heard is not tru
14、e 。你所听到的消息不真实。 （定语从句）四 学习同位语从句应注意在有些名词后的同位语从句中，其谓语动词应用（should）+动词原形的虚拟语气，这些词有：建议（suggestion ；advice；proposal） ，要求（demand ；requirement；request ） ，决定（ decision） ，命令（ order） ，劝告（ recommendation ）等The suggestion that a new bridge （should） be built was accepted. 修建一座新桥的建议被采纳了名词 doubt 后面的同位语从句，肯定时用whether
15、，否定时用 that 引导。We have some doubt whether they can complete the task on time. 我们怀疑他们能否按时完成任务。There is no doubt that he will keep his promise. 他将遵守诺言，这是毫无疑问的。(五). 名词性从句引导词that 与 what 的区别：引导词句法功能省略情况that 不作任何句子成分引导宾语从句可以省略(从句是并列句时 ,第二个分句前的that 不可省) what 主语、宾语、表语、定语不能省略精选学习资料 - - - - - - - - - 名师归纳总结 -
16、- - - - - -第 4 页，共 8 页精品资料欢迎下载名词性从句专项训练1The limits of a person s intelligence, generally speaking, are fixed at birth, but _he reaches these limits will depend on his environment. A. where B. whether C. that D. why （2012 安徽）2 .Evidence has been found through years of study_ childrens early sleeping
17、problems are likely to continue when they grow up. A. why B. how C. whether D. that （2012 重庆）3. It is by no means clear_ the president can do to end the strike. A. how B. which C. that D. what（2012 全国）4.Jerry did not regret giving the comment but felt _ he could have expressed it differently. A. why
18、 B. how C. that D. whether (2012 北京) 5. We promise _ attends the party a chance to have a photo taken with the movie star. A. who B. whom C. whoever D. whomever(2012 福建) 6.As many as five courses are provided, and you are free to choose _ suits you best. (2012 陕西) A. whatever B. whichever C. wheneve
19、r D. wherever 7. It doesnt matter _ you pay by cash or credit card in this store. A. how B. whether C. what D. why (2012 山东) 8.Everyone in the village is very friendly. It doesnt matter _ you have lived there for a short or a long time. A. why B. how C. whether D. when (2012 湖南) 9.It doesnt matter _
20、 you turn right or left at the crossingboth roads lead to the park. A. whether B. how C. if D. when (2012 天津) 10It suddenly occurred to him _ he had left his keys in the office. A. whether B. where C. which D. that (2012 江西) 11The newcomer went to the library the other day and searched for _ he coul
21、d 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 5 页，共 8 页精品资料欢迎下载find about Mark Twain. A. wherever B. however C. whatever D. whichever(2012 辽宁) 12 Scientists study _ human brains work to make computers. A. when B. how C. that D. whether (2012 四川) 13 made a promise to myself _ this year, my first y
22、ear in high school, would be different. (2012 浙江 ) A. whether B. what C. that D. how 14The notice came around two in the afternoon _ the meeting would be postponed. (2012 江苏) A. when B. that C. whether D. how 15. We haven t discussed yet _ we are going to place our new furniture.A. that B. which C.
23、what D. where （10 全国）16. The shocking news mad me realize _ terrible problems we would face. （2011 北京卷）A. what B. how C. that D. why 17. There is clear evidence _ the most difficult feeling of all to interpret is bodily pain. (2011上海卷 ) A. what B. if C. how D. that 18. The message you intend to conv
24、ey through words may be the exact opposite of _ others actually understand. A. why B. that C. which D. what (2011 上海卷 ) 19. I am afraid hes more of a talker than a doer, which is _ he never finishes anything. A. that B. when C. where D. why（2011 山东卷）20. We ve offered her the job, but I dontknow_ she
25、 ll accept it. （2011 山东卷）A. where B. what C. whether D. which 21. The villagers have already known _ well do is to rebuild the bridge. （2011精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 6 页，共 8 页精品资料欢迎下载江西卷）A. this B. that C. what D. which 22. It was never clear _ th e man hadn t reported the accid
26、ent sooner. （2011江苏卷）A. that B. how C. when D. why 23. His writing is so confusing that its difficult to make out _it is he is trying to express. A. that B. how C. who D. what （2011 安徽卷）24. Our teachers always tell us to believe in _ we do and who we are if we want to succeed. A. why B. how C. what
27、D. which（2011 四川卷）25. Twenty students want to attend the class that aims to teach _ to read first. A. what B. who C. how D. why （2011辽宁卷）26. When the news came _ the war broke out, he decided, to serve in the army. （2011 辽宁卷）A. since B. which C. that D. because27. Modern science has given clear evid
28、ence _ smoking can lead to many diseases. A. what B. which C. that D. where （2011 天津卷）28. Id like to start my own businessthat s _ I d do if I had the money. A. why B. when C. which D. what（2011 陕西卷）29. It is still under discussion _the old bus station should be replaced with a modern hotel or not.
29、A. whether B. when C. which D. where（2011 重庆卷）30. It is not always easy for the public to see _ use a new invention can be of to human life. A. whose B. what C. which D. that（2011 重庆卷）31. Before a problem can be solved, it must be obvious _the problem itself is. A. what B. that C. which D. why (2011
30、湖南卷 ) 32. We should respect food and think about the people who dont have_we have here and treat food nicely. 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 7 页，共 8 页精品资料欢迎下载A. that B. which C . what D. whether（10 福建）33 Cindy shut the door heavily and burst into tears. No one in the office knew_she
31、was so angry. A. where B. whether C. that D. why （10 湖南）34As a new graduate, he doesnt know_ it takes to start a business here. A. how B. what C. When D. which（10 天津）35 _some people regard as a drawback is seen as a plus by many others. A. Whether B. What C. That D. How (2010 北京) 36How about camping
32、 this weekend, just for a change? OK, _you want. Awhichever Bhowever Cwhatever Dwhoever（10 浙江）37 It is uncertain _side effect the medicine will bring about, although about two thousand patients have taken it. Athat Bwhat Chow Dwhether（10 浙江）38. One reason for her preference for city life is _she can
33、 have easy access to places like shops and restaurants. A. that B. how C. what D. why （10 上海）39. Before the sales start, I make a list of _ my kids will need for the coming season. A. why B. what C. how D. which（10 山东）40. I want to be liked and loved for_I am inside. （10 湖北）A. who B. where C. what D. how精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 8 页，共 8 页
