疑问句中Are Have Do的用法在疑问句中.什么时候用Are Have Do例如.Are you sleeping什么不能说成do you sleeping或者have you sleeping..

问题描述:

疑问句中Are Have Do的用法
在疑问句中.
什么时候用Are Have Do
例如.Are you sleeping什么不能说成do you sleeping
或者have you sleeping..

Are you sleeping now?
Do you sleep at 7 every day?
Have you slept?
Are you surprised?

are是系动词have是完成时标志的助动词
do是现在时标志的助动词
do you sleeping 是不对的,因为这句没有谓语,sleeping不能单独作谓语,必须加are
have you sleeping也不对,have必须加done