这句话中为什么不能用if?I do not know wheather he will come to our party.I do not know wheather he will come to our party.我们老师说因为前面有not所以不能用if,但我好像没听过啊.谁能具体解释下?
问题描述：
这句话中为什么不能用if?I do not know wheather he will come to our party.
I do not know wheather he will come to our party.
我们老师说因为前面有not所以不能用if,但我好像没听过啊.谁能具体解释下?
答
宾语从句是可以用if 的,但如后面有or not 就只能用whether