perfect tense
US /ˈpɜːr.fɪkt tens/
UK /ˈpɜːr.fɪkt tens/
1.
a verb tense that expresses an action or state that occurred at an indefinite time in the past or began in the past and continues to the present
:
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The sentence 'I have eaten' is an example of the present perfect tense.
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She had already finished her homework when I arrived, which is an example of the past perfect tense.