Non-restrictiveattributiveclause一.限与非限的区别E.g.1)Mycousinwhosefatherisateacherwantstobeanactor.2)Mycousin,whosefatherisateacher,wantstobeanactor.○○限制性定语从句关系词与先行词之间无逗号；非限制性定语从句关系词与先行词之间有逗号隔开。”Ilikethegirlwhoisholdingacupofmilkytea.限制性定语从句：修饰限制翻译成“的”Ilikethegirl,whoisholdingacupofmilktea.非限制性定语从句：补充说明，翻译另起一句Allthebooksherethathavebeautifulpicturesinthemwerewrittenbyhim.这儿所有里面带有漂亮图画的书都是他写的。（含义是这里有带图和不带图两类书）Allthebookshere,whichhavebeautifulpicturesinthem,werewrittenbyhim.这儿所有的书都是他写的，里面有漂亮的图画。（从句只是附加说明，提供更多的信息）Iadmirethemanwhowearsawhitecoat.Iadmiretheman,whohascuteteeth.Themanwhom(who/that)IadmiremostisPresidentObama.Theman,whomIadmiremost,isPresidentObama.限制性定从非限制性定从形式上不用逗号用逗号意义上去掉后句子不完整去掉后句子完整作用修饰限定补充说明翻译“的”另起一句，常为并列句that的运用可不可why的运用可不可which和who在句中作宾语是否可以省略可不可whom在从句中作宾语时是否可以用who替代可替代不可替代是否可以修饰句子不可可，只能由which或as引导二.非限常用的情况1.专有名词或者独一无二的事物Provence,whichisabeautifulplace,attractsmanyvisitorseveryyear.2.先行项是句子LiangChaoweilooksveryuglyinthismovie,whichisreallyfunny.3.先行词指的是某人只有一个亲属Theoldmanhasason,whoisasinger.Theoldmanhasasonwhoisanarchitect（建筑师）.小测试：Myfather,whoisateacher,isverystrictwithus.Myfatherwhoisateacherisverystrictwithus.4.当出现代词或表达数量的数词，如：some/many/all/any/both/none/few/afew/little/much/most/half）+of+which/whom结构时，常用非限Manypeople,someofwhomarenotoverweight,aregoingonadiet.Iamdoingdifferenttypesofexercises,allofwhicharequitehelpfultomyhealth.5)which在非限制性定语从句中有时作定语，形成“介词+which+n.”的关系词部分E.g.HestayedinEnglandfor2years,duringwhichtimeheimprovedhisEnglish.as引导非限Einstein,asweallknow,isafamousscientist.Asweallknow,Einsteinisafamousscientist.Einsteinisafamousscientist,asweallknow特点:1.as引导的定语从句位置很灵活。2.as引导的是整个句子。asVSwhich引导非限指代整个句子的区别aswhich位置主句前，中，后主句后意义正如这，那功能表达说话人的观点，看法在意义上相当于一个并列句As引导非限制性定语从句常用结构：asweallknow…众所周知……asiswellknown…众所周知……asisreported…正如所报道的那样……asisannounced…正如所宣布的那样asI/he/youexpected…正如预期的那样…………
