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ThePredicativeClause表语从句归纳：上述例句的结构：++句式观察句子结构，特别是划线部分。1.Iamalittle,littlebird.2.Thestoryisinteresting.3.Ourmathteacherishere.4.Everystudentisintheclassroom.5.Yourhomeworkistorecite.6.Herjobissellingcomputers.主语系动词/be表语一、表语从句定义：表语从句是在复合句中作表语的名词性从句,放在系动词之后,一般结构是“主语+系动词+表语从句”。例句：Theproblemisthatmillionsofpeopledieofillnessescausedbysmoking.e.g.1.WhatIwanttosayisthatI’msorry.2.ThefactisthatIearnedmypassagebyworkingasanunpaidhand.（一）由从属连词that引导的表语从句that在从句中不充当任何成分，本身也没有任何意义。只是起连接作用。注：that在引导表语从句时不能省略。二、表语从句的引导词（二）由从属连词whether引导的表语从句1.Thequestionis______________________2.Thequestionis_______________________whetheritisworthdoing.whetherwecanwinthem.whether在句子中不充当任何成分，但具有“是否”的意义。此时不能用if，因为if不能引导表语从句。Thequestionis________wewillhaveoursportsmeetnextweek.A.thatB.ifC.whenD.whether注意点：if不能引导表语从句Dasif/though引导表语从句时，在句子中也不充当任何成分，但有意义。译为：似乎，好像。Helooksasifhewerearichman.Itsoundsasifsomeoneisknockingatthedoor.他看起来好像是个富翁。听起来好像有人在敲门。（三）由从属连词asif/through引导的表语从句这类词引导表语从句时，与它们引导宾语从句一样，要在从句中充当句子成分（一般充当主语、宾语、表语、定语或状语），并具有一定的意义，不可省略。(四）连接代词Who,whom,whose,which,what及连接副词where,how,why,when及wh-疑问词+ever引导的表语从句(2)Theproblemiswhowecangettoreplaceher.(3)Thequestionishowhedidit.（状语）(4)Thatiswherehewasborn.（状语）问题是我们能找到谁去替换她呢。（宾语）问题是他如何做此事的。那就是他出生的地方。(1)Thatiswhatheisworriedabout.(宾语）那就是他担心的事(1)That’sbecausehedidn’tunderstandme.(2)It’swhyhegotangrywithme.那是因为他不理解我。那正是他对我生气的原因。(强调原因）（强调结果）（五）由从属连词because,why引导的表语从句1、句型：That/It/is/wasbecause……那是因为……That/Itis/waswhy……那是……的原因2、句型：thereasonwhy……isthat…………的理由是……why引导定语从句That/Itis/waswhy……那是……的原因why引导表语从句(1)Thereasonwhyhewaslateisthathewasill.他迟到的理由是他病了。注意：主句主语为reason,只能用that引导表语从句，不可用because.(2)It’swhyhegotangrywithme.那正是他对我生气的原因。1.Thereasonwhyhefailedis________hewastoocareless.A.becauseB.thatC.forD.becauseof2.Thisis___Sarawaslateforthemeeting.A.whyB.whatC.howD.That3.Thereasonis___heisunabletooperatethemachine.A.becauseB.whyC.thatD.WhetherBCA三、表语从句语序表语从句的语序与宾语从句一样，一律用陈述语序：主语+系动词+连接词+主语+谓语+其他成分小结：1.表语从句的构成:2.引导词:连词that,whether,asif连接代词who,what,which连词because,why3.语序:主从句时态呼应一致原则4.时态:陈述语序连接副词when,where,how,why1.Mariahastolookafterhersister.That’s_____shecan’tcomeoutwithus.A.whyB.howC.whenD.what2.Shelooked_____sheweretenyearsyounger.A.thatB.asif/throughC.asD.like3.Whatthedoctorsreallydoubtis____mymotherwillrecoverfromtheseriousdiseasesoon．A.whenB.howC.whetherD.why4.—Areyoustillthinkingaboutyesterday’sgame?—Oh,that’s_____.(2003北京春)A.whatmakesmefeelexcitedB.whateverIfeelexcitedaboutC.howIfeelaboutitD.whenIfeelexcited5.Goandgetyourcoat.It’s___youleftit.A.thereB.whereC.therewereD.wherethere