被动
简介
英语语态分为 主动语态 和 被动语态,想要强调什么就把什么放在前面。
时态
被动语态 就是将主动语态句子的宾语提前当主语,并将谓语动词的 do 改为 be done。
完成进行时态 基本不用于被动;此外 将来进行 和 过去将来进行 的被动形式在现代英语中也很少使用,尽管语法上可以构造,但在实际写作和口语中通常避免使用。
| 时态 | 一般 | 进行 | 完成 | 完成进行 |
|---|---|---|---|---|
| 现在 | 一般现在时态 do/does am/is/are done | 现在进行时态 am/is/are doing am/is/are being done | 现在完成时态 have/has done have/has been done | 现在完成进行时态 have/has been doing have/has been being done |
| 过去 | 一般过去时态 did was/were done | 过去进行时态 was/were doing was/were being done | 过去完成时态 had done had been done | 过去完成进行时态 had been doing had been being done |
| 将来 | 一般将来时态 will do will be done | 将来进行时态 will be doing will be being done | 将来完成时态 will have done will have been done | 将来完成进行时态 will have been doing will have been being done |
| 过去将来 | 一般过去将来时态 would do would be done | 过去将来进行时态 would be doing would be being done | 过去将来完成时态 would have done would have been done | 过去将来完成进行时态 would have been doing would have been being done |
基本句型
对于 种 基本句型,显然被动语态需要宾语,因此只有及物动词才有被动语态。
不及物动词
主动语态:主语 + do.
没有宾语,因此没有被动语态。
单及物动词
主动语态:主语 + do + 宾语.
被动语态:宾语 + be done (+ by + 主语).
- She bought a dress. A dress was bought by her.
双及物动词
主动语态:主语 + do + 间接宾语 + 直接宾语.
强调间接宾语的被动语态:间接宾语 + be done + 直接宾语 (+ by + 主语).
强调直接宾语的被动语态:直接宾语 + be done + to + 间接宾语 (+ by + 主语).
- I teach you English. You are taught English by me. / English is taught to you by me.
复杂及物动词
主动语态:主语 + do + 宾语 + 宾语补语.
被动语态:宾语 + be done + 宾语补语 (+ by + 主语).
- Peter considers you smart. You are considered smart by Peter.
连系动词
主动语态:主语 + do + 主语补语(表语).
没有宾语,因此没有被动语态。
主动 → 被动的转换
将主动语态转换为被动语态的标准步骤:
- 确定主语:将主动句的 宾语 移至句首作 被动句的主语。
- 改变谓语:将动词改为 be + 过去分词 形式,保留原时态。
- 保留状语:原句的状语位置不变。
- 处理施动者:将主动句的 主语 移至 by 之后(可省略)。
- They built this bridge in 1980. This bridge was built (by them) in 1980.
- People speak English all over the world. English is spoken all over the world.
by + 施动者 在以下情况通常 省略:
- 施动者 不重要 或 泛指(people, someone)。
- 施动者 未知 或 难以说出。
- 施动者 不言而喻。
含情态动词的被动
情态动词后的被动语态结构为 「情态动词 + be + 过去分词」。
| 时态 | 结构 | 示例 |
|---|---|---|
| 一般被动 | 情态动词 + be done | This can be done easily. |
| 完成被动 | 情态动词 + have been done | It must have been broken by him. |
| 进行被动 | 情态动词 + be being done(罕) | The car may be being repaired now. |
- The work must be finished before five.
- This problem should be solved immediately.
- The letter may have been sent yesterday.
非谓语的被动
非谓语动词(不定式、动名词、分词)也有 被动形式(详见 非谓语动词)。
| 非谓语 | 主动形式 | 被动形式 | 示例 |
|---|---|---|---|
| 不定式 | to do | to be done | I want to be helped. |
| 不定式完成式 | to have done | to have been done | It seems to have been done. |
| 动名词 | doing | being done | He likes being praised. |
| 动名词完成式 | having done | having been done | She regretted having been cheated. |
| 现在分词 | doing | being done | The boy being punished is my brother. |
| 过去分词 | — | done | The book written by him is famous. |
- 过去分词 本身就是 被动 / 完成 含义,作定语或状语时无需再变形。
- doing 与 done 作定语:doing 表 主动 / 进行,done 表 被动 / 完成。
- a running boy (主动) vs. a broken window (被动)
- the rising sun (主动) vs. the fallen leaves (被动)
不用被动语态的情况
以下情况 不能 或 不宜 使用被动语态:
不及物动词
不及物动词 没有宾语,不能变被动。常见:appear, happen, occur, exist, arrive, belong to, last, die, rise, fall。
- An accident happened yesterday. ✓
An accident was happened yesterday.✗
表示状态的及物动词
以下动词虽然及物,但表 状态 而非 动作,不用 被动语态:have, fit, suit, cost, lack, resemble, contain, equal, weigh, measure。
- This dress fits her well. ✓
She is fitted by this dress well.✗- The book cost me 50 yuan. ✓
50 yuan was cost (by) me.✗
反身代词作宾语
宾语是 反身代词 时不能变被动。
- He hurt himself. ✓
Himself was hurt by him.✗
系动词
系动词 后接 表语(非宾语),无被动语态:be, become, seem, look, feel, taste, sound, smell, remain。
易错点
主动形式表被动
部分动词 / 句型用 主动形式 表达 被动含义:
| 类别 | 示例 |
|---|---|
| 系动词 + 形容词 | The cake tastes good. |
| need / want / require + doing | The window needs cleaning. (= needs to be cleaned) |
| 主语 + 不及物动词 + well / easily | This book sells well. (畅销) |
| be + to do(主动表被动) | The work is to be done today. (也可用 be to do 表被动) |
- The pen writes smoothly. (笔写起来流畅)
- The book reads well. (这本书读起来不错)
get-passive
口语中常用 get + 过去分词 代替 be + 过去分词,强调 动作 / 突发 而非 状态。
- He got hurt in the accident. (强调动作)
- He was hurt in the accident. (可强调状态)
动作被动 vs 状态被动
- 动作被动:强调 动作过程,常用 be + done + by 施动者。
- 状态被动:强调 结果状态,过去分词此时近似 表语形容词。
- The window was broken by him. (动作被动)
- The window is broken. (状态被动,说明窗户现在是坏的)
主谓一致
被动句的 be 动词 与 新主语(原宾语)保持 数 的一致。
- The books were written by him. (主语复数,be 复数)
- The book was written by him. (主语单数,be 单数)