英语语法：I'm not sure if he will come.是什么从句?另：此句中，到底能用if来替代whether吗？

英语语法：I'm not sure if he will come.是什么从句?另：此句中，到底能用if来替代whether吗？ I'm not sure 英语语法 I’m sure(that)和I’m not sure if/whether...有急用 请高手给出尽可能详细的语法讲析!如果附有例句等详细内容可以加分 主要是I’m not sure if/whether的用法和例句 I'm not sure 快 I'm not sure yet. I'm not sure()( 至今) 英语翻译I'm not sure if it is good or not ___ ___ ___ I'm not sure if it will rain tonight.I'm not sure if/whether it will rain tonight.为什么不是is going to ,而要用will? I'm not sure whether/if robots will make humans lose their I'm not sure if it___tomorrow.A.will rain B.rain C.rains D.to rain 英语合适形式i'm not sure if we __ ( catch) the last bus 合适形式填个空2i'm not sure if we __ ( catch) the last bus I'm sure I am not wrong I'm not sure ______ it's a good idea or not.A.whether B.that C.how D.if 有没有I’m not too sure? NOW, I'm not sure 什么意思 为什么没有I’m not too sure? I am not sure if she is from Canada.还是I am not sure that she is from Canada.原题 is she from Canada?i'm not sure.合并为一句