Question

定语从句只能用that的情况

Answer 1

只能用that的情况

1、定语从句修饰的词（即，先行词），前面有形容词最高级时This is the best film that I have seen.（先行词是film，前面有the best修饰它，这时候只能用that，强调“最好的”）

2、先行词被the very/the only/the same/the last等修饰时She is the only girl who has got a prize.（先行词是girl，前面有the only修饰它，这时候只能用that，强调“唯一一个”）

3、先行词被序数词修饰时The first place that they visited was the Big Ben.（先行词是place，前面有the first修饰它，这时候只能用that，强调“第一个”）

4、先行词正好是anything/everything/nothing/few/all/none/little/some等词时All that can be done has been done.（先行词是all，这时候只能用that，强调“所有的”）There is little that I can do for you.（先行词是little，这时候只能用that，强调“没有、很少“）另外有一些情况，不一定是为了强调，也要用that，并且都有各自的原因。