名词性从句表语从句讲解

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1、什么叫名词性从句？在句子中起名词作用的句子叫名词从句(NounClauses）名词从句的功能相当于名词词组,它在复合句中能担任主语、宾语、表语、同位语等因此根据它在句中不同的语法功能，名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句名词性从句nounclause主语从句subjectclause宾语从句objectclause表语从句predicativeclause同位语从句appositiveclauseHisstoryisinteresting.Whathesaidisinteresting.Ihea

2、rdhisstory.Iheardwhathesaid.Ilistentohisstory.Ilistentowhathesaid.Thisishisstory.Thisiswhathesaid.Theideaofgoingthereisgood.Theideathatweshouldgothereisgood.名词性从句中的连接词连词:that/whether/asif(though);连接代词:what/who/which/whose/whatever/whoever/whomever/whichever，连接副词

3、:where/when/why/how/wherever/whenever引导词句型转换1.Theyaregooddoctors.Hetoldus.→2.Hehadn’tsaidanythingatthemeeting.Thefactsurprisedus.→Hetoldusthattheyweregooddoctors.Thefactthathehadn’tsaidanythingatthemeetingsurprisedus.总结：当从句原来是陈述句时，变成名词性从句用that引导。3.Doesyoursister

4、getupearly?Doyouknow?→4.Doanimalshavethesamesensesashumans?Ioftenwonder.→Doyouknowif/whetheryoursistergetsupearly?Ioftenwonderif/whetheranimalshavethesamesensesashumans.总结：当从句原来是一般疑问句时，变成名词性从句用if或whether引导。5.Whendidhebuythisnewbike?Couldyoutellme?→6.Myquestionis

5、this:wherewillthelecturebegiven?→Couldyoutellmewhenheboughtthisnewbike?Myquestioniswherethelecturewillbegiven.总结：当从句原来是特殊疑问句时，变成名词性从句还用原来的特殊疑问词来引导。总结：名词性从句必须用陈述句语序。所有名词性从句要有且仅有一个引导词，除宾语从句的that外其他均不能省略。其结构为引导词+陈述语序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

6、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/because1.Thequestioniswhetherwecanrelyonhim.2.That’sbecausewewereinneedofmoneyatthattime.3.Heloo

7、kedasifhewasgoingtocry.4.That’swhyIwaslate.引导词的用法（一）that在表语从句中,又。Thefactisthathehasn’tyetrecoverfromillness.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.Whatthedoctorreallydoubtsiswhethermymotherwillrecoverfromth

8、eseriousdiseasesoon.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.