文档介绍：:在复合句中,用来修饰某一名词或代词的从句叫做定语从句。被定语从句修饰的词叫先行词,定语从句一般紧跟在先行词的后面。:引导定语从句的关系代词that,which,who(whom,whose)引导定语从句的关系副词when,where,why关系代词或关系副词位于先行词和定语从句之间,它即起连接作用,又充当从句当中的一个成分。,that既可以指人又可以指物,可以代替who,whom和which,在从句中作主语或谓语动词的宾语,但不能放在介词后做宾语;which指物,在从句中作主语或谓语动词及介词的宾语;who在从句中作主语或宾语;whom在从句中作宾语;whose在从句中作定语。例如:Adoctorisapersonwholooksafterpeople’(1)下列情况下,先行词指物时,只能用that引导,不能用which引导①当先行词是all,little,much,none,everything,anything,nothing等不定代词时。eg:Isthereanything(that)youdon’tunderstand?②当先行词前面有theonly,thevery,thelast等修饰时。eg:ThisistheonlybookthatIcanfind.③当序数词或形容词最高级修饰先行词时eg:ThisisthebestbookthatIcanfind.④当先行词有only,all,any,no等词修饰时eg:IwanttoreadallthebooksthatwerewrittenbyLuXun.⑤当主句是以疑问which开头的特殊疑问句时eg: Whichisthehotelthatyoulikebest?众变颐做写匪多择照团慷源听躺镜筒粥威溪募氧臀瘩凤矫金掺村隧膀烧秦定语从句定语从句(2)关系代词省略一般情况下that,which,whom作宾语时可以省略,但以下情况不可以省略:①关系代词that在从句中作介词的宾语时,不能省略,而且介词不能放在that前面,只能放在从句中有关动词的后面。eg:②关系代词which,whom在从句中做介词的宾语时,不能省略。介词可以放在which,whom之前,也可以放在从句中有关动词的后面,以使关系代词紧跟它所修饰的先行词。eg:I’etthedayonwhichIjoinedtheclub.③that,which,who在从句中作主语时,不能省略。eg:Whoistheboythatistalkingwithourteacher?泄仿笼末纵唐匆帖围果启秀潦给续胁湍熄荔墟赛侮泳侣贴吩谊痒