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what引导名词性从句的五种用法,After_seemedaverylongtime,Iopenedmyeyesandfoundmyselfinbed!A.whatB.whenC.thatD.which,A,Idontknowwhatyoumean.,什么,一、用法归纳表示“的东西或事情”“所的”,相当于“thethingthat.;allthat.;everythingthat.”Theyvedonewhattheycandotohelpher.他们已经尽力帮助了她。Hesaveswhatheearns.他赚多少,积蓄多少。WhatMaryisisthesecretary.玛丽的职务是秘书。,2.表示“的人或的样子”(指抽象意义的人)相当于thepersonthat(见66):Heisnolongerwhathewas.他已经不是以前的那个样子。Heiswhatisgenerallycalledatraitor.他就是人们通常所说的叛徒。WhohasmadeFredheisnow?,what,3.表示“的数量或数目”,相当于theamount/numberthatOurincomenowisdoublewhatitwastenyearsago.我们现在的收入是10年前的两倍。Thenumberofthestudentsinourschoolistentimeswhatitwasbeforeliberation.现在我校学生的数量是解放前的10倍。,4.表示“的时间”,相当于thetimethat:Afterwhatseemedlikehourshecameoutwithabittersmile.似乎过了几个小时他才苦笑着出来。Theyounggirlwastoofrightenedtospeak,standingthereforwhatseemedlikehours.小女孩吓得不敢说话,在那儿站了几个小时。,5.表示“的地方”,相当于theplacethatThisiswhattheycallSaltLakeCity.这就是他们称为盐湖城的地方。In1492,ColumbusreachedisnowcalledAmerica.,what,归纳总结:当名词性从句缺少主语、宾语、表语,而缺少的这个词不是指具体的人时,要首先考虑what,巩固练习:1.Shehaschangedalot.Shesnolonger_sheusedtobe.A.thatB.whatC.whichD.不填2.Thetobaccowhichisusedtomakecigaretteswasfirstgrownin_isnowpartoftheUnitedStates.A.whichB.thatC.allD.what3.Nolonger_Tomtheman_heusedtobe.A.will;whatB.was;whatC.will;thatD.is;that4.WhathasmadeChina_sheistoday?A.thatB.whatC.asD.which5.Thenumberofthestudentsofthecollegehasreached8,000,twice_itwaswhenthecollegewasopenedtenyearsago.A.whatB.asmuchC.whichD.that,D,B,A,D,B,二、用法说明(1)这样用的what相当于“先行词+关系代词”,所以其前不能有先行词:你喜欢什么就拿什么吧。正:Youcanhavewhatyoulike./Youcanhaveeverything(that)youlike.误:Youcanhaveeverythingwhatyoulike.,二、用法说明(2)有时what可用作限定词,其后修饰一个名词(见42):IgavehimwhatbooksIhad.我把我所有的书都给他了。Hegavemewhatmoneyhehad.他把身边带有的钱全给了我。,(3)what后的名词可以是复数名词或不可数名词,但通常不能是单数可数名词:误:IgavehimwhatbookIhad.,AistoBwhatCistoD句型分析,句型:AistoBwhatCistoD.本句型的意思是“A对B而言正如C对D一样”。其中what的意思相当于as(但在此句型不能用as代替),作连词用,引导状语从句。,Airistouswhatwateristofish.空气对于我们犹如水对于鱼。其中介词to表示对比,
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