noun
perfect tense
Grammatical term referring to a verb form that expresses a completed action or state, often corresponding to English 'have done' constructions.
英語の現在完了形は「have + 過去分詞」で表します。
The English present perfect tense is expressed with 'have + past participle'.
この文では完了形を使うと自然です。
Using the perfect tense in this sentence sounds natural.
過去形 is the past tense, which simply locates an action in the past, whereas 完了形 focuses on the completion or result of an action relative to another time.
Compound of 完了 (completion) and 形 (form, tense), a straightforward calque from Western grammatical terminology.