sisall____Iknowaboutthematter.A.thatB.whatC.whoD.whether2.Isthereanythingelse_____yourequire?A.whichB.thatC.whoD.what3.Thelastplace_____wevisitedwastheGreatWall.A.whichB.thatC.whereD.itExercise:先行词为everything,little,much,all,anything,nothing,none,few等词时,关系代词用that4.Hetalkedhappilyaboutthemenandbooks_____interestedhimgreatlyintheschool.A.whichB.thatC.itD.whom5.Thereisnodictionary_____youcanfind.A.thatB.whichC.whereD.inthat6.Isoxygentheonlygas_____helpsfireburn?A.itB./C.whichD.that7.mendedtoyou?A.whereB.whichC.thatD.it先行词为人和物的组合先行词被all,little,much,every,no,等修饰时先行词被序数词或最高级修饰,先行词前有序数词(thefirst),形容词最高级(thebest),thelast,thevery,theonly等时。若主句中有疑问代词who或者which,为了避免重复,关系代词不要再用who,which,而用that。考点二:以下情况只能用which引导定语从句。1.引导非限制性定语从句时,其先行词可是一个词,也可是整个主句或主句的某一部分。3.句子中同时有两个定语从句,其中一个已经用了that引导时2.先行词是物,紧接在介词后面时