perfect

/ˈpərˌfɪkt/

a tense of verbs used in describing action that has been completed (sometimes regarded as perfective aspect)

中文释义：完成时

The present perfect tense is used to describe actions that started in the past and continue.

现在完成时用于描述过去开始并持续到现在的动作。

In English, the perfect aspect often requires the auxiliary verb 'have'.

在英语中，完成体通常需要助动词'have'。