【知識(shí)解析】Non-restrictiverelativeclauses【市一等獎(jiǎng)】

概念定語(yǔ)從句有限制性和非限制性兩種。限制性定語(yǔ)從句是先行詞不可缺少的部分，去掉它主句意思往往不明確；非限制性定語(yǔ)從句是先行詞的附加說(shuō)明，去掉了也不會(huì)影響主句的意思。非限制性定語(yǔ)從句與主句之間通常用逗號(hào)分開(kāi)，將非限定性定語(yǔ)從句放在句子中間時(shí)，其前后都需要用逗號(hào)隔開(kāi)。Grammar—Non-restrictiverelativeclauses概念試比較以下兩組從句：Grammar—Non-restrictiverelativeclausesThewomanwholivesnextdoorisadoctor.Graceworksforacompanythatmakesfurniture.Westayedatthehotel(that)yourecommended.MybrotherBen,wholivesinHongKong,isanarchitect.Annatoldmeabouthernewjob,whichshe’senjoyingalot.WestayedattheParkHotel,whichafriendofoursrecommended.限制性非限制性要點(diǎn)Grammar—Non-restrictiverelativeclauses引導(dǎo)非限制性定語(yǔ)從句的關(guān)系詞：

關(guān)系代詞：who,whom,which,as,whose

關(guān)系副詞：when,where非限制性定語(yǔ)從句不能用that引導(dǎo)。在非限制性定語(yǔ)從句中，即使引導(dǎo)詞who/whom/which在從句中作賓語(yǔ)，也不能省略。

例如：ThismorningImetChris,whom/whoIhadn’tseenforages.whom/who不能省略要點(diǎn)Grammar—Non-restrictiverelativeclauses在which引導(dǎo)的非限制性定語(yǔ)從句中，which可以指代前面整個(gè)句子的情況。

例如：Joegotthejob,whichsurprisedeverybody.當(dāng)非限制性定語(yǔ)從句修飾整個(gè)主句時(shí)，其關(guān)系代詞可以用as和which，但位于句首不能用which，只能用as。例如：AsIexpected,hedidn’tbelieveme.which指代主句JoegotthejobPracticeMakeonesentencefromtwo.Usethesentenceinbracketstomakearelativeclause.Youwillneedtousewho(m)/whose/which/where.Grammar—Non-restrictiverelativeclauses1.WeoftengotovisitourfriendsinCambridge.(ItisnotfarfromLondon.)________________________________________________________________2.Stevenisoneofmyclosestfriends.(Ihaveknownhimforaverylongtime.)________________________________________________________________3.Lisaisawayfromhomealot.(Herjobinvolvesalotoftravelling.)________________________________________________________________4.Thenewstadiumwillbefinishednextmonth.(Itcanhold90,000people.)________________________________________________________________5.AlaskaisthelargeststateintheUSA.(Mybrotherlivesthere.)________________________________________________________________WeoftengotovisitourfriendsinCambridge,whichisnotfarfromLondon.Steven,who/whomI’veknownforaverylongtime,isoneofmyclosestfriends.Lisa,whosejobinvolvesalotoftravelling,isawayfromhomealot.Thenewstadium,which