关系代词that的用法 首先特别注意，that只能用在限定性定语从句中，在非限定性定语从句中永远不能选用that, 另外介词后边也不可用that, 而是跟which。在限定性定语从句中，which和that在代替物的时候，一般可以通用。The money that (which) is in the wallet is mine。
有些情况下，只宜用that,而不宜用which i。 先行词是最高级形容词或者它前面有最高级形容词的时候This is the best that has been used against pollution。English is the most difficult subject that you will learn during these years。
ii。 先行词是序数词，或者它前面有一个序数词的时候He is the last person (that) I want to see。It is the first American movie of this kind that I’ve ever seen。
iii。 主句已有疑问词who或者which的时候Which is the bike that you lost?iv。 先行词既有人又有物，宜用thatDo you know the things and persons that they are talking about?The bike and its rider that had run over an old man were taken to the policestation。
v。 先行词是all, much, little, something, everything, anything, nothing, none, the one等不定代词时You should hand in all that you have。
We haven’t got much that we can offer you。I mean the one that you talked about just now。
答：(1)当先行词是all,any,a few等不定代词指人时。 （2）先行词为that,this,these,thoes指人时。 （3）直接位于介词后作宾语时，用...详情>>
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