I do not know if it will show.为什么可以放will?如果不可以放,那后面跟什么单词?

I do not know if this is a wrong beginning,will it last long 为什么I don't know if it will rain tomorrow Books will only be on computers,not on paper.为什么only放在will后面 Tom does not know this as I dao .But I will not do it ,It wo do you know if he will come为什么if后面用将来时 这句话中为什么不能用if?I do not know wheather he will come to our part i don't know whether it will rain or not .but if it __.i sha I do not if it ____tomorrow.if it_____,I will stay at home. If one day I gave up you,you will not regret it I do not wan Yes But if you know you will do it.I think you can do well will it snow tomorrow? ,变宾语从句Do you know if it is snowing?可以 动词填空1、-Do you know if Sandy will go there?-I‘m not sure.She