高考英语 表语从句讲解和练习 (共14张)ppt课件

1、.,PredicativeClauses表语从句,.,表语从句的定义：表语从句在复合句中作主句的表语。表语从句和主语指同一内容，它对主语进行解释、说明，使主语的内容具体化。结构是“主语+系动词+表语从句”。可以接表语从句的系动词有be,look,remain,seem等。,.,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,.,1.Thequestioniswhetherwecanrelyonhim.2.Thatsbecausewewereinneedofmo

2、neyatthattime.3.Helookedasifhewasgoingtocry.4.ThatswhyIwaslate.,.,引导词的用法（一）,that在表语从句中,又。Thefactisthathehasntyetrecoverfromillness.Thereasonwhyhehastogoisthathismotherisillinbed.,既不充当成分没有意义,.,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.Whatthedoctorreallydoubtsiswhethermymotherwillrecoverfromtheseriousdis

3、easesoon.2.Thequestioniswhetheritisworthdoing.,“是否”,不能,引导词的用法（二）,.,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（三）,.,who在表语从句中充当_表示_.Theproblemiswhocoulddothework2.Myt

4、roubleiswho(whom)Icanturnto.,主语、宾语或表语,谁,引导词的用法（四）,.,which在引导表语从句时,常充当_表示。如：Ireadaboutitinsomebookoranother,butwhatIdontknowiswhich(book)itis.,定语,表语,其中哪一个,引导词的用法（五）,.,由asif,asthough引导表语从句，表示好像。句子中的系动词常用look,appear,seem等。Itlooksasifitwasgoingtorain.2.Theyoungmanwithlonghairlooksasifhewereagirl.,引导词的用法

5、（六）,.,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.It/That/ThiswasbecauseImissedthetrain.,that来引导,because,It/That/Thisis/wasbecause,引导词的用法（七）,.,当表语从句中主语、宾语、表语具备，但是还是要表示疑问含义，可以判断句子中缺少状语，常常用相应的特殊疑问词引导，有why,when,where,ho

6、w等Thisishowhedidit.Thatiswhythebrotherswantedtomakeabet.Thatswhywevegivenyoutheletter.,引导词的用法（八）,.,表语从句引导词注意事项,1.that引导表语从句时不能省.2.if不能引导表语从句.3.除that外的所有引导词都有自己的意义。4.除that,whether外的所有引导词都须在从句中充当相应的成分,.,1.Thats_thePartycalledonustodo.A.whyB.whatC.howD.that2.Thereasonis_heisunabletooperatethemachine.A.becauseB.whyC.thatD.Whether3.Thatis_theyse