that引导定语从句

1.先行词是something，anything，nothing，all,none,few,little,much等代词时，关系词只能用that.❶Hereissomething(that)Iwilltellyou.❷Thereisnothingintheworldthatcanfrightenhim.❸Allthatcanbedonehasbeendone.2.当先行词被形容词最高级和序数词修饰时。❶Thisisthemostinterestingstory(that)Ihaveeverheard.❷Thefirstplace(that)theyvisitedinLondonwastheBigBen.3.当先行词即有人也有物时，只能用that。Icanrememberwellthepersonsandsomepictures(that)Iseeintheroom.4.先行词是theone时，关系词用that。Isittheone(that)youwant?5.当主句已有疑问词who或which时，从句用that，避免重复。Whoisthegirlthatwonthefirstplace?6.先行词被theonly,theevery修饰时，关系词用thatIt’stheonlyword(that)Iknowinthepassage.