现在完成时和过去完成时都属于完成时态。

The present and past perfect tenses both belong to the perfect tense.

youdao

它们是用作现在完成时和过去完成时的助动词。

They are used as auxiliaries to the present and past perfect tenses.

youdao

它们是用作现在完成时和过去完成时的助动词。

They are used as auxiliaries to the present and past perfect tenses.

youdao