修饰物体时关系代词that和which的区分

　　使用that的情况：

　　1.当先行词是nothing,something,anything,all,each等不定代词时.

　　e.g.Doyouhaveanythingthatisimportanttotellme?

　　2.当先行词被all,any,some,no,not,every,each等修饰时.

　　e.g.Ihavesomebooksthatareverygood.

　　3.当先行词被形容词最高级、序数词所修饰时.

　　e.g.ThisisthefirstbookthatIboughtmyself.

　　ThebiggestbirdthatIcaughtisthisbird.

　　4.主句是以which或who开头的特殊疑问句时

　　e.g.Whichisthebikethatyoulost?

　　Whoisthewomanthatwaspraisedatthemeeting.

　　5.当先行词在从句和主句中都作表语时,无论先行词是人还是物.

　　Chinaisnolongerthecountrythatshewas.

　　6.如有两个定语从句,其中一个已用which引导,另一个宜用that.

　　Edisonbuiltupafactorywhichproducedthingsthathadneverbeenseenbefore.

　　7.在therebe句型中,只用that.

　　Heaskedforthelatestbook(that)thereisonthesubject.

　　8.当先行词被thevery,thelast,thenext,theonly等词修饰时.

　　e.g.ThisistheverybookthatIlostyesterday.

　　9.当先行词又有人又有物时.

　　e.g.Iwon’tforgetthethingsandthepersonsthatIsaw.

　　只能使用which的情况.

　　1、非限制性定语从句中.

　　e.g.Maryhasabook,whichisveryprecious.

　　2、在介词之后.

　　e.g.Thisisahouseinwhichlivesanoldman.

　　3、当主句中的主语被that修饰时.

　　e.g.ThatdogwhichIfoundinthestreetbelongstoMary.