have/has down是什么时态

回答

爱扬教育

2022-03-14

现在完成时是英文时态的一种；
现在完成时的用法；
现在完成时用来表示现在之前已发生过或完成的动作或状态,但其结果却和现在有联系,也就是说,动作或状态发生在过去但它的影响现在还存在。

扩展资料

　　现在完成时常常与表示频度的时间状语连用,如often, sometimes, ever, never, twice, on several occasion等:

　　Have you ever been to Beijing

　　I have never heard Bunny say anything against her.

　　I have used this pen only three times. It is still good.

　　George has met that gentleman on several occasions.