表语从句ppt

S+V+C(主+系+表）结构表语从句是指跟在系动词后面的成分，说明主语的状态、内容、特征、身份等。•1.Thefactisthathedidn'tevenreadit.•2.ThedifficultyishowIcantransferthispatienttohospital.表语是指跟在系动词后面的成分，说明主语的状态、特征、身份等。可当表语的有形容词、名词、分词、介词短语可以接表语从句的系动词有：1：表存在：be（being,been,am,is,are,was,were)appear2:感官动词：feel,seem,look,,sound,taste,smell3:表持续：stand,lie,remain,keep,stay4:表变化：become,get,grow,turn,go,come,run,fall,prove,turnout引导词•连接词：that/whether/asif/asthough•连接代词：who/whom/whose/which/what•连接副词：when/where/why/how/because引导词的用法（一）1.that引导的表语从句1)that在从句中仅起连接作用，无实际意义，在句中不做任何成分，不能省略。2)在表“建议，劝说，命令”的名词idea,suggestion,request,proposal后面的表语从句中，谓语动词用“should+动词原形”，should可省略1)Myopinionisthatit’sgettingbetterandbetter.2)Mysuggestionisthatwe(should)startearlytomorrow.引导词的用法（二）•whether在表语从句中表是否,但不充当句子的成分。if不能引导表语从句.Whatthedoctorreallydoubtsiswhethermymotherwillrecoverfromtheseriousdiseasesoon.引导词的用法（三）what在表语从句中充当______________表示____________________________.1.Thequestioniswhatcausedtheaccident.2.Thatmountainisnolongerwhatitusedtobe.3.Whathetoldyouwaswhathadbeendiscussedatthemeeting.主语、宾语或表语什么，什么样子，或所…的（人或事）引导词的用法（四）who在表语从句中充当______________表示____.1.Theproblemiswhocoulddothework2.Mytroubleiswho(whom)Icanturnto.主语、宾语或表语谁引导词的用法（五）which在引导表语从句时,常充当_____________。如：Ireadaboutitinsomebookoranother,butwhatIdon’tknowiswhich(book)itis.定语,表语哪一个,哪表示一些引导词的用法（六）•由asif,asthough引导表语从句，表示好像。句子中的系动词常用be,look,appear,seem，sound等。1.Itlooksasifitwasdoingtorain.•2.Theyoungmanwithlonghairlooksasifhewereagirl引导词的用法（七）当主句的主语为reason,或者是由why引导的从句时,与它们相关的表语从句用_________,而不能由_______引导;because引导表语从句时只能用于________________________句型中.1.ThereasonwhyIwaslatewasthatImissedthetrain.2.Iwaslate.ItwasbecauseImissedthetrain.that来引导becauseIt/That/Thisis/wasbecause…引导词的用法（八）•That'sbecausehedidn'tunderstandme.•那是因为他不理解我。•That'swhyhedidn’tunderstandme.•那就是他不理解我的原因。•That‘sbecause…强调原因•That'swhy…强调结果•Thereasonwhywedidn'ttrusthimis_that_____hehasoftenlied．•reason做主语时，表语从句只能用that引导,不能用why引导•Thereason(why…/for…)is/wasthat….•Thereasonisthat……•Thequestionis____wewillhaveoursportsmeetingnextweek.•A.that•B.if•C.when•D.whether注意点1：if不能引导表语从句2020/2/26D•Thereasonwhyhefailedis____hewastoocareless.•A.because•B.that•C.for•D.becauseof注意点2:主句主语为reason,只能用that引导表语从句，不可用becauseB•Theproblemis_______totaketheplaceofJohn.•A.whocanweget•B.whatwecanget•C.whowecanget•D.thatwecanget注意点3：如果从句是特殊疑问句，用陈述句语序D小结•1.表语从句的构成：引导词+简单句•2.引导词：•①连词that,whether,as,asif•②连接代词who,what,which•③连接副词when,where,how,why•3.三个注意点：•①if不引导表语从句•②主语为reason时，引导词用that•③语序