She doesn't know____to go or to stay.A.if B.whether C.what D.where 但是a选项错在哪?
问题描述：
She doesn't know____to go or to stay.A.if B.whether C.what D.where 但是a选项错在哪?
答
当宾语从句变成简单句时,不定式前只能用whether,而不能用if,切记.所以答案是B.whether什么是能用whether