Question

定语从句中什么时候关系代词只能用that

Answer 1

1.先行词为all,little,much,everything,nothing,something,anything等不定代词

2.先行词被all,little,much,every,no,等修饰时.

3.先行词被序数词或最高级修饰或先行词前有the last,the very,the only 等词时.

4.先行词为人和物的组合

5.若主句中有疑问代词 who 或者 which,为了避免重复,关系代词不要再用 who,which,而用 that.