文档介绍：表语从句定义:在复合句中作表语的从句叫做表语从句。它位于主句的系动词之后,对主语进行解释、说明,使主语的内容具体化。PeriodFour Grammar(1)&Grammar(2)由从属连词that,。。由连接代词what,who,。。由连接副词when,where,how,。ThatiswhyIdidn'。表语从句的虚拟语气在表示建议、劝告、命令含义的名词作主句的主语时,表语从句的谓语动词需用“should+动词原形”表示,should可省略。常见的词有:advice,suggestion,order,proposal,plan,idea,request,requirement等。Mysuggestionisthatwe(should)。because,why引导的表语从句That'sbecausehedidn'tunderstandme.(That'sbecause...强调原因)That'swhyhegotangrywithme.(That'swhy...强调结果)应注意的问题①表语从句还可以由asif,asthough引导。。②名词reason作主语时,后面的表语从句表示原因时要用that引导,不宜用because。ThereasonwhyIwassadwasthathedidn'。③连词that引导表语从句时,不能省略,尤其是从句较长或结构较复杂时。应注意的问题Theproblemwithlookingintospacefromtheearthisthatthereislotsofdustintheearth'。④引导表语从句只能用whether,不能用if。Thequestionisiftheenemyismarchingtowardsus.(×)Thequestioniswhethertheenemyismarchingtowardsus.(√)⑤表语从句一定要用陈述语序Thequestioniswhencanhearriveatthehotel.(×)Thequestioniswhenhecanarriveatthehotel.(√)⑥不像宾语从句,在有表语从句的复合句中,主句时态和从句时态可以不一致。ThequestioniswhowilltravelwithmetoBeijingtomorrow.(√)Thequestioniswhyhecriedyesterday.(√)主语从句定义:在复合句中充当主语的从句叫做主语从句。由从属连词that,。Whetherwegotogetherorseparatelydoesn'。注意:引导位于句首的主语从句只能用whether,不能用if。由连接代词what,whatever,who,whoever,。。由连接副词when,where,how,why引导WhyhefailedtheEnglishexamwasn'。。Ithasn'。应注意的问题注意同强调句型的区别Itisapitythatyoudidn',你没去看电影。Itwasinthemorningthatthemurde