present perfect
参考词典中present perfect的常规释义：
基本释义
- n.[语]现在完成时
英英解释
1个名词解释
- a perfective tense used to express action completed in the present
[同] present perfect, present perfect tense
[例]- I have finished' is an example of the present perfect
点击查看……- a perfective tense used to express action completed in the present
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