除了这些注重词,还可以是现在完成时的助动词have/has,或者是过去完成时的助动词had。可以是情态动词。例如,
Have you ever been to Guangzhou?
你有没有去过广州?
Has he finished his homework?
他有没有写完作业?
Could you help me?
你可以帮助我吗?
Will the machine work well?
机器会运转正常吗?
还要have has had will shall would was were