whether he will come or not"or not"是可有可无的吗?

Whether he will come to the meeting d__on the weather. 连词成句come,the,will,problem,he,is,whether Will,l,whether,wonder,come,he连词成句 There was some doubt about whether he will come.whether he will come 是宾语从句吗? It's ----he will be able to come.A.a doubt whether B.doubtful whether Whether he will come is still u------- to us.Anyway ,we will wait for him. Please let me know about it _____.A when he will come B whether he will come C when he comes D whether he comeswhen he comes 为什么不能用whether 为什么when 后不能用将来时 I have never doubted -----he will come today,but I do doubt-----he will come on time.A.that,that.B.whether,that.C.that,whether.D.whether,whether麻烦再翻译一下整个句子 It does not matter whether he will come?这句话中的whether可以用if代替吗 名词性从句i doubt whether he will come to see me .whether可否用that替代,为什么? Can you make sure ____?A.that he will come here today B.when he will come here today C.will he come here today D.whether will he come here todayCD100%错，我想知道AB是怎么回事 Can you make sure ___________?A.that he will come here today B.when he will come here today C.will he come here today D.whether will he come here today 答案是A请问为什么不是B I am not sure( )he will come or not空格中填whether 还是if? whether he will come or notor not是可有可无的吗? he,whether,not ,is,will,come,uncertain,or连词成句并翻译成中文 I am not sure wether he will come back soon?whether引导的是什么从句? I don't know if he will come tomorrow.为什么要用if 不能用whether It is not certain whether he will come.这个句子怎么翻译