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1、表语从句Ⅰ.Definition（定义）表语是用来说明主语的身份、性质、品性、特征和状态的，表语常由名词、代词、数词、动词过去分词、动词的-ing形式、副词、介词短语、形容词、不定式和从句等来充当。Eg.（例子）Thepersonstoodinfrontofyoujustnowismyheadmaster.刚才站在你前面的那个人是我的校长。Ididn’tknowthatitwasyouatthattime.当时我不知道那是你。Thedoorremainedclosed.门仍然关着。Mary’sda
2、ilyjobiscleaningthehouse.玛丽的日常工作就是打扫这间房子。名词充当表语代词充当表语动词过去分词充当表语动词-ing形式充当表语Thehouseisnotonlylargebutalsobeautiful.这所房子不仅大而且漂亮。WhenIwenttoyourhouse,youwereout.当我到你家的时候，你不在家。Noonewasinthedorm,whenshearrived.当她到达的时候，宿舍里没有人。MyjobistoteachyouEnglish.我的工作是教
3、你们英语。Thereasonwhyhecamelatewasthathisclockdidn’twork.他迟到的原因是他的闹钟坏了。介词短语充当表语副词充当表语形容词充当表语不定式充当表语从句充当表语观察思考：指出句子成分HenrywasanAmericanbusinessman.HenrymetanAmericanbusinessman.主语表语主语谓语宾语（及物动词）连系动词表语从句的定义Thequestioniswhowilldoit.Thequestionisdifficult.（表）表
4、语从句（表）2.表语从句的构成主语+系动词+引导词+简单句Thisiswhyhedidit.表语从句放在连系动词之后，充当复合句中的表语。WhatIwanttosayisthatIamtired可以接表语从句的系动词有：1:be（being,been,am,is,are,was,were)2:feel,seem,look,appear,sound,taste,smell3:stand,lie,remain,keep,stay4:become,get,grow,turn,go,come,run,fa
5、ll5:prove,turnout连接词：that/whether/asif/asthough(if不引导表语从句)连接代词：who/whom/whose/which/what连接副词：when/where/why/how/becausePredictiveclause表语从句1.that1)that在从句中不担任句子成分，无实际意义，一般不能省略2)在表“建议，劝说，命令”的名词idea,suggestion,request,proposal等后面的表语从句中，谓语动词用“should+动词原形
6、”，should可省略Myopinionisthatit’sgettingbetterandbetter.Mysuggesstionisthatwe(should)startearlytomorrow.whether在表语从句中表,但不充当句子的成分。if引导表语从句.如:1.Whatthedoctorreallydoubtsiswhethermymotherwillrecoverfromtheseriousdiseasesoon.2.Thequestioniswhetheritisworthdo
7、ing.“是否”不能whether现在唯一要弄清楚的是他是否拐卖妇女儿童。他提出的第一个问题是：儿子无出息，父母也不光彩，是否如此？Allthatistobemadecleariswhetherheabductedandsoldwomenandchildren.Thefirstthingheputforwardswaswhetheraworthlesssonwasadisgracetohisparents.asif,asthough引导的表语从句asif/though引导的表语从句常置于连系动词l
8、ook,seem,sound,be,become等后面，常用虚拟语气，表示不存在的动作或状态。e.g.Itsoundsasif/thoughsomebodywasknockingatthedoor.主语+连系动词（look/seem/appear……）+that/asif从句*asif/asthough引导的表语从句如果是事实，就用陈述语气；如果与事实不符，就用虚拟语气(主句一般现在时从句就用过去式，be的话变成were。主句是过去式，从句用过去完成时)。Itlooksasifhe
