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时间:2019-08-25
《公开课 主语从句讲解练习及答案》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、主语从句一、主语从句的连词分三类(1)从属连词引导的主语从句(thatwhetherif)that引导的主语从句:引导词that无含义/在句中不做成分/不可以省。That引导主语从句通常用it作形式主语。Thatshesurvivedtheaccidentisamiracle.whether有含义(是否)/在句中不做成分/不可以省。注意:引导主语从句,不能用if不能在开头,只能用whether。Whethersheiscomingornotdoesn’tmattertoomuch.(2)用连接代词引导的主语从句在由连接代词who,whose,whom,which,what,whoev
2、er,whomever,whichever,whatever引导的名词性从句中,其连接代词在句中起名词性作用,担当一定成分.例如Whateverwedoistoservethepeople.注:whatever/whoever的功用whatever=anythingthat;whoever=anyonewho。要注意和whatever,whoever引导的让步状语从句的区别。如:Whoeverbreaksthelawshouldbepunished.(主语从句)(=Anyonewhobreaksthelawshouldbepunished.)Whoeverbreaksthelaw,h
3、eshouldbepunished.(让步状语从句)(=Nomatterwhobreaksthelaw,heshouldbepunished.)(3)用连接副词when,where,why,how引导的名词性从句(其连接副词有含义,在句中作状语。)例如:Whereweshouldleaveitisaproblem.Whentheywillcomehasn’tbeenmadepubic.三、it作形式主语的主语从句有时为了考虑句子平衡,通常在主语从句处使用形式主语it,而将真正的主语从句移至句末。这分四种情况:(1)对于以连词that引导的主语从句,通常用形式主语it替代主语从句:4、>Itis+名词+从句Itisafactthat…事实是……;Itisgoodnewsthat………是好消息;Itisaquestionthat………是个问题;Itiscommonknowledgethat………是常识Itiscommonknowledgethatthewhaleisnotafish.ItisnosurprisethatBobshouldhavewonthegame.Itis+形容词+从句Itisnecessarythat…有必要……;Itisclearthat…很清楚……;Itislikelythat…很可能……;Itisimportantthat…重要的是…5、…Itseemsobviousthatwecannotgoonlikethis.Itisnecessarythatyou(should)masterthecomputer.需要注意的是这类主语从句中,谓语动词很多为“(should)+动词原形”,即要用虚拟语气。Itis+过去分词+从句Itissaidthat…据说……;Itisreportedthat…据报道……;Ithasbeenprovedthat…已证明……;Itmustbeprovedthat…必须指出……例如:Itisusedtobethoughtthatanewstarmustbeduetoacollisionbe6、tweentwostars.Ithasnotbeenmadeclearwhenthenewroadistobeopenedtotraffic.Itseems不及物动词(happened/appears/doesn’t’tmatter/makesnodifference/occurred…)that…主语从句不可提前Itmakesnodifferencewhetherhewillattendthemeetingornot.ItdoesnotmatterifImissedmytrain.IthappenedthatIsawhimyesterday.(2)对于以连接代词(副词)引导的7、主语从句,可以使用形式主语代主语从句,也可直接在句首使用主语从句:Whethertheywouldsupportuswasaproblem.他们是否会支持我们还是一个问题。Itwasaproblemwhethertheywouldsupportus.他们是否会支持我们还是一个问题。(3)对关系代词型what引导的主语从句,通常直接将主语从句放在句首。如:Whatweneedismoney.我们需要的是钱。WhatIwanttoknowisthis.我想知道
4、>Itis+名词+从句Itisafactthat…事实是……;Itisgoodnewsthat………是好消息;Itisaquestionthat………是个问题;Itiscommonknowledgethat………是常识Itiscommonknowledgethatthewhaleisnotafish.ItisnosurprisethatBobshouldhavewonthegame.Itis+形容词+从句Itisnecessarythat…有必要……;Itisclearthat…很清楚……;Itislikelythat…很可能……;Itisimportantthat…重要的是…
5、…Itseemsobviousthatwecannotgoonlikethis.Itisnecessarythatyou(should)masterthecomputer.需要注意的是这类主语从句中,谓语动词很多为“(should)+动词原形”,即要用虚拟语气。Itis+过去分词+从句Itissaidthat…据说……;Itisreportedthat…据报道……;Ithasbeenprovedthat…已证明……;Itmustbeprovedthat…必须指出……例如:Itisusedtobethoughtthatanewstarmustbeduetoacollisionbe
6、tweentwostars.Ithasnotbeenmadeclearwhenthenewroadistobeopenedtotraffic.Itseems不及物动词(happened/appears/doesn’t’tmatter/makesnodifference/occurred…)that…主语从句不可提前Itmakesnodifferencewhetherhewillattendthemeetingornot.ItdoesnotmatterifImissedmytrain.IthappenedthatIsawhimyesterday.(2)对于以连接代词(副词)引导的
7、主语从句,可以使用形式主语代主语从句,也可直接在句首使用主语从句:Whethertheywouldsupportuswasaproblem.他们是否会支持我们还是一个问题。Itwasaproblemwhethertheywouldsupportus.他们是否会支持我们还是一个问题。(3)对关系代词型what引导的主语从句,通常直接将主语从句放在句首。如:Whatweneedismoney.我们需要的是钱。WhatIwanttoknowisthis.我想知道
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