劍橋詞典the grammatical form used for an action that had already finished when another action happened . It is made with "had" and a past participle . 過(guò)去完成時(shí) "I had just cooked " is an example of the past perfect , and "I had just been cooking " is an example of the past perfect continuous . I had just cooked 是過(guò)去完成時(shí)的一個(gè)例子，而 I had just been cooking 是過(guò)去完成進(jìn)行時(shí)的一個(gè)例子。 例句 'I had already eaten ' is an example of the past perfect .'She hadn't seen him' is an example of the past perfect . 返回 the past perfect