用that不用which的七种情况答:只能用that,不能用which 1、先行词由all,much,little,few,something,anything,everything,none,nothing等不定代词修饰或先行词是不定代词本身。例如 All that can be done has been done.2、先行词有the only, the same, the very修饰时。例如 The articles are the very ones that should be ...