名词性从句名词性从句NOUNCLAUSENOUNCLAUSEWarm-upexercise:1._____foodisrelatedtoillnessisnotanewdiscovery.A.WhatB.ThatC./D.If2.Everythingwilldependon______theywillsupportyou.A.ifB.whichC.whetherD.that3.That’s____you’vebeenlookingsoworriedthesedays.A.whyB.whatC.thatD.how4.AnorderhascomefromBerlin_____nolanguagebutGermanmaybetaughtintheschools.A./B.whereC.thatD.which本句是主从，从句中不缺任何成分，故选B连接主从复合句。本句是宾从，介词后不可用IF故选C连接宾从复合句。本句是表从。Lookworry不及物词组，故不选B；句中已有so故how也不妥；用that词不达意；所以选A。本句是同位语从句，是ORDER的内容。EnglishGrammarEnglishGrammar名词性从句名词性从句名词性从句是由if,whether,that和各种疑问词充当连接词所引导的从句，其功能同名词一样。一．主语从句一．主语从句主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾，句子的谓语动词用法同第三人称单数。That/Whether/Where/When/Whyhewaschosenmadeuspuzzled.Itmadeuspuzzledthat/whether/when/where/whyhewaschosen.但应注意，如果是由疑问代词what.whatever.whoever等引导的，表示的是一个具体的东西或人，不可用引导词“IT”替换。Whoeveristiredmayrest.Whatshesaidgavemegreatconfidence.一．主语从句一．主语从句主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。1.1.ItIt作形式主语和作形式主语和itit引导强调句的比较引导强调句的比较It作形式主语代替主语从句，主要是为了平衡句子结构，主语从句的连接词没有变化。而it引导的强调句则是对句子某一部分进行强调，无论强调的是什么成分，都可用连词that。被强调部分指人是也可用who/whom。例如：Itisapitythatyoudidn’tgotoseethefilm.Itdoesn’tinterestmewhetheryousucceedornot.Itisinthemorningthatthemurdertookplace.ItisJohnthatbrokethewindow.2.2.用用itit作形式主语的结构作形式主语的结构(1)Itis＋名词＋从句Itisafactthat…事实是…Itisanhonorthat…非常荣幸Itiscommonknowledgethat…是常识(2)Itis＋形容词＋从句Itisnaturalthat…很自然…Itisstrangethat…奇怪的是…(3)Itis＋不及物动词＋从句Itseemsthat…似乎…Ithappenedthat…碰巧…Itappearsthat…似乎…Itoccurstomethat…我想起…(4)It＋过去分词＋从句Itisreportedthat…据报道…Ithasbeenprovedthat…已证实…Itissaidthat…据说…3.3.主语从句不可位于句首的五种情况：主语从句不可位于句首的五种情况：（1）Itissaid/reported…结构中的主语从句不可提前。例如：ItissaidthatPresidentJiangwillvisitourschoolnextweek.ThatPresidentJiangwillvisitourschoolnextweekissaid.(2）Ithappens/occurs…结构中的主语从句不可提前。例如：Itoccurredtohimthathefailedintheexamination.Thathefailedintheexaminationoccurredtohim.（3）Itdoesn’tmatterhow/whether…结构中的主语从句不可提前。例如：Itdoesn’tmatterwhetherheiswrongornot.Whetherheiswrongornotdoesn’tmatter.（4）含主语从句的复合句是疑问句时，主语从句不可提前。例如：Isitlikelythatitwillrainintheevening?Isthatwillrainintheeveninglikely?√×√×√×√×4.what与that在引导主语从句时的区别what引导主语从句时在句时在从句中充当句子成分，如主语．宾语．表语，而that则不然。例如：1)Whatyousaidyesterdayisright.2)Thatsheisstillaliveisaconsolation.Itisrightwhatyousaidyesterday.Itisaconsolationthatsheisstillalive.×√二．宾语从句二．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.作动词的宾语(1)由that引导的宾语从句(that通常可以省略),例如：Iheardthatbejoinedthearmy.(2)由what,whether(if)引导的宾语从句，例如：Shedidnotknowwhathadhappened.Iwonderwhetheryoucanchangethisnoteforme.(3)动...
