But I don't know if I think too much.为什么要把 if 改成whether?
But I don't know if I think too much.为什么要把 if 改成whether?
i don't know whether it will rain or not .but if it __.i sha
I don’t know ___________ he is well or not.whether/if,为什么?
I don't know whether you will believe or not if i say i love
I don't know whether to take the medicine at once.If I _____
I don't know _____ I am free this afternoon.A whether B if 选
I don't know if he will come tomorrow i think he if he free
I don't know if Betty_____back,but if she________back,I will
I don't know if it------tomorrow,but if it-----,I'll go swim
宾语从句 语法I don't know if /whether he still lives here after so
宾语从句I don't know _ to visit the old man.A whether B if
if和whether I don't know ____ she will go tomorrow .____ she