表语从句用法最新文档(可以直接使用，可编辑最新文档，欢迎下载）表语从用法定义：用作表语的从句叫做表语从句引导表语的从句的关联词的种类从属连词that.ThetroubleisthatIhavelosthisaddress.Thereasonwasthathewaslateforschool.(2)从属连词whether,as,asifHelookedjustashehadlookedtenyearsbefore.Thequestioniswhethertheywillbeabletohelpus.注：从属连词if一般不用来引导表语从句，但asif却可引导表语从句。Allthiswasovertwentyyearsago,butit’sasifitwasonlyyesterday.Thekeyiswhetherwecansolvetheproblem.Itlookedasifitwasgoingtorain.注：能跟表语从句的谓语动词一般为系动词be,seem,look,sound等Helookedjustashehadlookedtenyearsbefore.Itsoundsasifsomeoneisknockingatthedoor.(3)连接代词who,whom,whose,what,which,whoever,whatever,whichever在表语从句中做主语、宾语等。Theproblemiswhowecangettoreplaceher.Thatwaswhatshedidthismorningonreachingtheagreement.Myquestioniswholeft.(4)连接副词where,when,how,whyWhatIwonderiswhenheleft.Thisiswheretheyoncelived.Thatiswhyhedidn’tcomehere.Thequestionishowhedidit.(5)连词because可引导表语从句。注意：because可引导表语从句，但与之同义的since,as,for等不用于引导表语从句。Ithinkitisbecauseyouaredoingtoomuch.It’sjustbecausehedoesn’tknowher.That’sbecausehedidn’tunderstandme.(That’sbecause…强调原因)That'swhyhegotangrywithme.(That’swhy…强调结果)注意：在一些表示“建议，劝说，命令”的名词后面的表语从句中，谓语动词用虚拟语气.Should+动词原形表示，should可省略。Mysuggestionisthatwe(should)startearlytomorrow.一坚持（insisit）二命令（command,order）三建议（suggest,advise,propose）四要求（desire,demand,require,request）四．注意事项（重点看）1.表语从句要用陈述语序。Thatiswherethefamousscientistwasborn.Thisiswhysheissohappytoday.that和what在引导的表语从句that本身没有词义，在句中只起连接作用，不充当句子成分；what则表示“所…的（人或事）”，在表语从句中充当主语或宾语等。Thatfacetisthatmorethanseventypercentoftheearth’ssurfaceiscoveredbywater.Whathetoldyouwaswhathadbeendiscussedatthemeeting.if与whether均意为“是否”引导的表语从句是，只能用whether，不能用if。Thequestioniswhetherwecanfinishourworkbytomorrowevening.语气主语为advice,order,idea,notion,proposal,suggestion,request等一些表示“建议，劝说，命令”的名词，之后的表语从句中，谓语动词用虚拟语气。Should+动词原形表示，should可省略。Mysuggestionisthatwe(should)startearlytomorrow.Ouronlyrequestisthatthisshouldbesettledassoonaspossible.(2)asif/though引导的表语从句时，从句谓语多用虚拟语气。这是因为从句中的情况与事实不相符。具体来说，如果从句表示与现在事实相反，谓语动词用一般过去式；