when do they come?与when they will come?有什么不同,为什么同样是情态动词位置不一样

When do they come home? when do they come?与when they will come?有什么不同,为什么同样是情态动词位置不一样 Do you know fish come of eggs when they are when do you come Where do they come from?What do they usually doWhere do they come from?What do they usually do When do the children do their homewore?为什么 前面要加do When do they get When do they leave? what do they see when the children come here to steal the apples when do you come here? What color do they come come When do they like camping? when do you come home from school 英文歌曲,女生唱的 开头是when do you say love they can changed. 中间还有come come with me into a dream. What 什么 do they come home? where do they come from?同意句 where do they ___(come)from Do you konw how they come from Do you know when he comes?与When he will come.哪个正确,用法上有什么区别?