perfect tense

US /ˈpɜːr.fɪkt tens/
UK /ˈpɜːr.fɪkt tens/
"perfect tense" picture
1.

完了形, 現在完了形, 過去完了形

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

:
The sentence 'I have eaten' is an example of the present perfect tense.
「I have eaten」という文は現在完了形の例です。
She had already finished her homework when I arrived, which is an example of the past perfect tense.
私が到着したとき、彼女はすでに宿題を終えていた。これは過去完了形の例です。