1. 只能使用that,不用which 的情况:
(1) 先行词是all, few, little, nothing,
everything, anything 等不定代词时。例如:
All
that he said is true.
(2) 先行词被only, no, any, all,等词修饰时。例如:
He
is the only foreigner that has been to that place.
(3) 先行词是序数词或被序数词修饰的词。例如:
He was the
second (person) that told me the secret.
(4) 先行词是形容词最高级或被形容词最高级修饰的词。
This is the
best book (that) I have read this year.
(5) 先行词既包括人又包括物时。例如:
He talked about
the people and the things he remembered.