什么时候用do和are用来做一般疑问句开头

什么时候用do和are用来做一般疑问句开头
什么时候用do和are用来做一般疑问句开头

什么时候用do和are用来做一般疑问句开头
当陈述句中有am和are的时候需要把他们提前,其中am要变成are.
I am Linda--Are you linda?
they are students--Are they students?
当陈述句中谓语是动词原形的时候,借助动词do 并提前.如果是单三式,就借助动词does并提前
he likes apples.--does he like apples?
they like apples--Do they like apples?

疑问句用什么动词一般决定于陈述句的位于部分。
当主句的谓语动词是be动词is,am,are时，疑问句就用be动词
eg. There are some apples.
——Are there any apples?
谓语有情态动词时，疑问句就用情态动词开头
eg. I should go to bed now.
——Should I go to ...

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疑问句用什么动词一般决定于陈述句的位于部分。
当主句的谓语动词是be动词is,am,are时，疑问句就用be动词
eg. There are some apples.
——Are there any apples?
谓语有情态动词时，疑问句就用情态动词开头
eg. I should go to bed now.
——Should I go to bed now?
谓语是一般及物或不及物动词世，疑问句就要用助动词了
eg. He worked very hard to catch up with his class.
——Did he work very hard to catch up with his class?

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