I don't know _________ he will come tomorrow．_________ he comes,I_英语解答

I don't know _________ he will come tomorrow．_________ he comes,I'll tell you．
选什么,为什么?

人气：268 ℃　时间：2019-08-19 07:38:45

解答

就选D!前半句是宾语从句,if当是否讲；后半句是真实条件句,if当如果讲.其实,做这道题时,最好确定的是后半句,真实条件句的结构：if从句用一般现在时,主句用将来时.这样,很容易锁定答案的.