定語從句在復合句中修飾名詞或代詞的句子，叫定語從句.Maryisabeautiful

girl.Maryisagirlwhohaslonghair.形容詞修飾girl,作定語句子作定語,修飾girl被定語從句修飾的詞叫做先行詞。定語從句必須放在先行詞之后。先行詞關系詞定語從句Maryisagirlwho

haslonghair.關系代詞關系副詞which,who,whom,whose,thatWhere,when,whyHehasacarwhichhassevenseats.Ilikeclothesthatmakemefeelgood.IlikemusicwhichIcandanceto.1.先行詞是人，并且作句子的主語時，關系代詞用who2.先行詞是人，并且作句子的賓語時，關系代詞用whom3.先行詞是事物或動物時，關系代詞用which或that4.先行詞與從句中的某個名詞有所屬關系，表達‘…的’意思時，關系代詞用whose

Themanwhoisspeakingatthemeetingisaworker.Themanisaworker.Themanisspeakingatthemeeting.分解

Thewomanwhom

theywantedtovisitisateacher.Thewomanisateacher.Theywantedtovisitthewoman.分解

Iknowthegirlwhose

motherisateacher.Iknowthegirl.Thegirl’smotherisateacher.分解Exercise:用關系代詞填空Theboy____________isplayingping-pongismyclassmate.Thee-mail___________Ireceivedyesterdaywasfrommysister.Ihatepeople______________talkmuchbutdolittle.Thecar_____________myfatherboughtisverybeautiful.whowhichwhowhich/that5.Theman______hairiswhiteishisgrandfather.6.Isthereastudent_________fatherisabusinessman?whosewhose下列情況只能用關系代詞that1.序數詞或最高級修飾先行詞時，只能用that

2.先行詞既有人也有物時,只能用that3.先行詞是theone時,只能用that.5.當主句有疑問詞who或which時，用that4.先行詞是

little,much,few,no,all,some,any時,只能用that.6.先行詞前有theonly，thesame，thelast修飾時，只能用that。1.Icanrememberwellthepersonsandsomepictures

thatIsee.2.Isittheonethatyouwant?3.Ihaven’tgotanythathegives.5.ItisthebestparkthatIhavevisited.4.Whoisthegirlthatiscrying？6.ThisisthesamebikethatIlost.7.I’veneverheardofthepeopleandthings________youtalkedaboutjustnow.that當先行詞同時指人和物時，關系代詞只能用that.Exercise2.Myfatherandhisteachertalkedalotaboutthepersonsandthings______theycouldn’tremember.Say

all________youknow.Isthere

anything______Icandoforyou?thatthatthat當先行詞是something,anything,nothing,all等詞時，關系代詞只能用that.4.Thisisthefirstplay________IhaveseensinceIcamehere.5.Thisisthebestnovel_______Ihaveread.thatthat當先行詞被序數詞，最高級等詞修飾時，關系代詞只能用that.6.Whoisthegirl_______isstandingunderthetree?7.Whichisthemachine____weusedlastSunday.thatthat先行詞是下列情況時只能用關系代詞which１．先行詞是that，those時，只能用which。２．有介詞時，關系詞只能用which1.Whatisthatwhichisunderthedesk?2.ThosearethebookswhichIboughtyesterday.3.Thisistheroominwhichhelives.4.Thisisthehousein________wehavelivedfor10years.which1).先行詞是anyone,someone,those時,只能用who先行詞是下列情況時只能用關系代詞who2).在therebe句型中，先行詞指人,只能用who1.Thosewhowanttogotherecomehere.2.Isthereanyonewhowantstogothere?3.Thereisanoldmanwhowantstoseeyou.

關系副詞：when/where/why

when作時間狀語:Shewillneverforgetthedaywhen(=onwhich)shegotmarried.Itwastheyearwhen(=inwhich)theWorldWarIbrokeout.When=介詞+whichwhere作地點狀語1.Iwanttoknowtheplacewhere(=inwhich)Iwasborn.2.Thetablewhere(=atwhich)sheissittingisanewone.where=介詞+whichwhy作原因狀語,其先行詞常常是thereason.Thatisthereasonwhy(=forwhich)I’mlate.Iknowthereasonwhyhesaidit.why=forwhichExercise1.October1,1949istheday_____thePRCwasfounded.A.whichB.whenC.thatD.onthat

2.Isthatthereason_____youarefortheplan.A.whichB.whatC.whyD.fo