一、在定语从句中,which 和 that 在指代事物时.一般可以互换使用,但下列情况例外。(一)通常只用 that 而不用 which 的情况:1.当先行词是不定代词 all,everything,anything,nothing,much,few,little.none.theone 等时。如:All that can be done has been done.I mean the one that was hought yester-day.2.先行词前面有 only,any.few.one of,lit-tle,no,all.every.very.same 等词修饰时。如: First, in the attributive clause, which and that when referring to things, generally can be used interchangeably, but the following exceptions. (A) usually only that without the use of which: 1. When the antecedent is an indefinite pronoun all, everything, anything, nothing, much, few, little.none.theone other time. Such as: All that can be done has been done. I mean the one that was haught yester-day.2. There are only an, any.few.one of, lit-tle, no, all.every.very.same When the word modification. Such as: