过去完成时（Past perfect）

过去完成时表示某件事发生在另一个过去事件之前——它在时间轴上标记更早的那个动作。

• When I arrived at the party, Maria had already left. （她先离开，然后我才到）
• He had never seen snow before he moved to Canada.
• By the time we got there, the concert had already started.

句型始终相同：had + 动词的过去分词。had 从不变化——所有主语都用 had。

**快速公式：**主语 + had + 过去分词 → She had finished. They hadn't seen it. Had you ever been there?

如何构成过去完成时

Had 对所有主语都一样——这里没有 was / were 的区分。

过去分词与现在完成时（have worked，have gone，have seen）中使用的形式相同。不规则动词的过去分词——gone、seen、written、spoken——就是不规则动词表中的第三栏。想查看常见不规则动词的三种形式（原形、过去式、过去分词），可以参考 Past simple: irregular verbs。

口语中，助动词 had 常在主语代词后缩写为 'd：She*'d** already left. We**'d** never met. I**'d** just arrived.* 在简短回答中，或需要强调时，要使用完整形式："Had she left?" — "Yes, she had."

核心用法：标记更早的事件

当提到两个过去事件时，过去完成时标记先发生的那个。较晚的事件通常使用一般过去时。

• When the film started, we had already found our seats. （找到座位 → 电影开始）
• She called after I had left the office. （我离开 → 她打来电话）
• They were exhausted because they had worked all day. （工作在先 → 疲惫在后）

汉语常用"已经、之前、先……再……"或语序来表示先后，不靠动词变形；英语则常用过去完成时标记"更早发生的动作"。看到"到某个过去时间为止已经……"时，要想到 had + 过去分词，不要只用一般过去时。

常与过去完成时连用的时间连词

这些连词可以帮助说明两个过去事件之间的时间关系。含有过去完成时的从句通常表示较早的事件；另一个从句通常用一般过去时：

after 和 before 本身已经表明顺序，因此两个一般过去时也是正确的：✅ After she locked the door, she left. 两种表达都对；过去完成时只是让顺序更明确。

与 already、just、never、still 和 yet 连用

这些副词与过去完成时搭配十分自然：

• I had already finished when you called.
• She had just left when he arrived.
• He had never tried sushi until that evening.
• They still hadn't arrived by midnight.
• The train hadn't left yet when we reached the platform.

语序：already 和 just 最常见的位置是 had + 副词 + 过去分词——✅ had already finished，✅ had just left（had finished already 也可以）。never：had + never + 过去分词——had never tried。否定句中的 still：still + hadn't + 过去分词——still hadn't arrived；较正式的说法是 had still not arrived。

与 for 和 since 连用

过去完成时还可以与 for 和 since 连用，表示某件事在过去某个时间点之前已经持续了多长时间：

• She had lived there for ten years before she moved.
• They had known each other since school.

否定

not 放在 had 和过去分词之间。缩略形式 hadn't 在日常口语中最常用：

• I hadn't met her before that day.
• They hadn't finished when the bell rang.
• She had not expected that reply.（更为强调）

疑问句

将 had 移至主语前面：

• Had you seen that film before?
• Had she left by the time you arrived?
• What had he said before you walked in?

简短回答：Yes, I had. / No, I hadn't.

过去完成时还是一般过去时——什么时候可以不用过去完成时？

当 after 或 before 等连接词已经表明顺序时，两个一般过去时同样自然且正确：

• ✅ After she locked the door, she left.
• ✅ After she had locked the door, she left.

过去完成时在叙事中途"回溯"时最为有用——就像闪回：

He sat down and thought about the morning. He had argued with his boss. He had spilled coffee on the report. Everything had gone wrong.

如果这里不用过去完成时，时间线就会不清楚。

常见错误

• ❌ When I arrived, she left already. → ✅ When I arrived, she had already left. （较早的事件需要用过去完成时）
• ❌ I had went to bed early. → ✅ I had gone to bed early. （需用过去分词，而非过去式）
• ❌ She had never saw the sea before. → ✅ She had never seen the sea before. （seen，不是 saw）
• ❌ They had finished the work yesterday.（独立句，没有后续事件）→ ✅ They finished the work yesterday. 如果有后续事件，过去完成时是可以的：I checked on Tuesday — they had finished the work the day before.
• ❌ After I had have dinner, I left. → ✅ After I had had dinner, I left.（或更自然地：After I had dinner, I left）

练习检测

过去完成时还是一般过去时？

1. By the time the taxi ____ (arrive), we ____ already ____ (miss) the train.
2. She ____ (feel) much better after she ____ (sleep) for a few hours.
3. ____ you ____ (ever / visit) Paris before that trip?
4. He ____ (turn) off the computer and ____ (leave) the office.

重点总结

• 过去完成时 = had + 过去分词——与现在完成时使用相同的过去分词，但助动词是 had，而非 have / has。
• Had 从不变化：对所有主语都一样。
• 用于两个过去事件中较早的那个——在另一个事件发生时已经完成的动作。
• 常见搭配：when、after、before、by the time、already、just、never、still、yet。
• 与 for 和 since 连用，表示在过去某时间点之前某事已持续了多长时间。
• 有 after 和 before 引导时，先后顺序本身已经比较清楚——两个一般过去时同样正确，但过去完成时会让顺序更明确。
• 口语中，had 常缩写为 'd：I'd eaten，she'd gone，we'd never met。在简短回答中使用完整形式：Yes, I had.