We use the present perfect tense to talk about something that happened at an indefinite time in the past.

我们使用现在完成时谈论发生在过去某个不确定的时间的事情。

youdao

We use the present perfect tense to talk about something that happened at an indefinite time in the past.

我们使用现在完成时谈论发生在过去某个不确定的时间的事情。

youdao