Appearance
Unit 29 — may and might 1
1. 核心概念
我们使用 may 或 might 来表示：
某件事情有可能发生 / 某种情况有可能是真的
核心意思：
may / might = perhaps / maybe
也就是：
可能 / 也许
A. may / might：表示现在或未来的可能性
2. Example — Where's Ben?
你在找 Ben。
但是：
Nobody is sure where he is.
没人确定他在哪里。
于是大家给出不同猜测。
3. He may be in his office
He may be in his office.
他可能在办公室。
等同于：
Perhaps he is in his office.
也就是：
也许他在办公室。
结构：
may + be
这里表达的是：
对当前状态的可能性判断。
4. He might be having lunch
He might be having lunch.
他可能正在吃午饭。
等同于：
Perhaps he is having lunch.
这里判断的是：
现在正在进行的动作
所以结构是：
might + be + V-ing
5. She might know
Ask Kate. She might know.
问问 Kate，她可能知道。
等同于：
Perhaps she knows.
这里：
know
直接使用动词原形。
所以：
might + know
6. may 和 might 都表示“可能”
图片中的规则：
We use may or might to say that something is possible.
例如：
It may be true.
或者：
It might be true.
都表示：
这可能是真的。
7. may vs might
在很多情况下：
may 和 might 都可以使用
例如：
| may | might |
|---|---|
| It may be true. | It might be true. |
| She may know. | She might know. |
| He may come later. | He might come later. |
意思都接近：
可能 / 也许
8. may 和 might 的语气
初学阶段可以先理解成：
may ≈ might
两者都表示：
某件事有可能。
通常：
might 有时会让可能性听起来稍微更弱、更不确定
但很多实际语境里差别很小。
所以不要死记成：
may = 50%
might = 30%
这种百分比并不准确。
更重要的是理解：
两者都在表达“不确定的可能性”。
9. 否定形式
否定形式是：
may not
和：
might not
意思：
可能不……
注意：
这不是“不可能”。
而是：
有可能不是 / 有可能不会
10. Example — It may not be true
It may not be true.
这可能不是真的。
等同于：
Perhaps it isn't true.
这里意思是：
有这种可能：它不是真的。
但也可能：
它是真的。
11. Example — She might not know
She might not know.
她可能不知道。
等同于：
Perhaps she doesn't know.
这里不是说：
她肯定不知道。
而是：
有可能不知道。
12. may / might 的基本结构
结构：
主语 + may / might + 动词原形
例如：
| 结构 | Example |
|---|---|
| may + be | He may be at home. |
| might + be | She might be tired. |
| may + be + V-ing | He may be working. |
| might + be + V-ing | She might be sleeping. |
| may + know | He may know. |
| might + want | She might want it. |
| may not + be | It may not be true. |
| might not + know | She might not know. |
13. may/might + be
如果我们判断的是：
某种状态
使用：
may / might + be
例如：
He may be tired.
他可能累了。
She might be at home.
她可能在家。
14. may/might + be doing
如果判断的是：
现在正在进行的事情
使用：
may / might + be + V-ing
例如：
He might be having lunch.
他可能正在吃午饭。
Sarah may be working.
Sarah 可能正在工作。
时间关系：
NOW
↓
working?
↑
may / might
15. may/might + 动词原形
如果是普通动作或状态动词：
may / might + 动词原形
例如：
She might know.
她可能知道。
He may want some help.
他可能需要帮助。
They might come later.
他们可能晚点来。
16. may be vs maybe
这一页还有一个非常重要的拼写区别。
may be — 两个词
may be
结构是：
may + be
其中：
may = 情态动词
be = 动词原形
例如：
It may be true.
这可能是真的。
maybe — 一个词
maybe
是一个副词。
意思：
perhaps / 也许
例如：
“Is it true?”
“Maybe. I'm not sure.”
“这是真的吗？”
“也许吧，我不确定。”
17. may be vs maybe 对比
| may be | maybe |
|---|---|
| 两个词 | 一个词 |
| may + be | 副词 |
| 后面构成句子谓语 | 通常修饰整个句子 |
| It may be true. | Maybe it's true. |
| 它可能是真的 | 也许它是真的 |
18. 一个简单判断方法
如果后面是：
adjective / noun / place
通常可能是：
may be
例如：
He may be tired.
She may be a doctor.
They may be at home.
如果意思只是：
“也许……”
可以使用：
maybe
例如：
Maybe he's tired.
B. may have / might have：对过去进行可能性推测
19. 核心概念
如果我们推测的是：
过去发生的事情
使用：
may have + 过去分词
或者：
might have + 过去分词
核心：
过去可能发生过……
20. 结构
may / might + have + past participle
例如：
- may have been
- might have left
- may have known
- might have forgotten
时间重点：
PAST NOW
↑ │
may/might have done │
意思：
现在回头判断过去可能发生了什么。
21. Example — She may have been asleep
A: I wonder why Kate didn't answer her phone.
我不知道 Kate 为什么没接电话。
B: She may have been asleep.
她当时可能睡着了。
等同于：
Perhaps she was asleep.
这里：
现在不知道真正原因。
只是推测：
过去她可能处于睡着的状态。
22. may have been
结构：
may + have + been
例如：
She may have been asleep.
过去可能睡着了。
对比现在：
| 现在 | 过去 |
|---|---|
| She may be asleep. | She may have been asleep. |
| 她现在可能睡着了 | 她当时可能睡着了 |
23. Example — You might have left it at work
A: I can't find my phone anywhere.
我到处都找不到手机。
B: You might have left it at work.
你可能把手机落在公司了。
等同于：
Perhaps you left it at work.
推理：
PAST NOW
● left phone? │
↑ │
might have left can't find it
24. Example — She might not have known
A: Why wasn't Amy at the meeting yesterday?
为什么 Amy 昨天没参加会议？
B: She might not have known about it.
她可能不知道这件事。
等同于：
Perhaps she didn't know.
注意：
might not have known
意思是：
过去可能不知道。
不是：
过去绝对不知道。
25. Example — He may not have been feeling well
I wonder why David was in such a bad mood yesterday.
我不知道 David 昨天为什么情绪那么差。
He may not have been feeling well.
他当时可能身体不舒服。
等同于：
Perhaps he wasn't feeling well.
这里结构是：
may not + have been + V-ing
26. may/might have 的完整结构
| 类型 | 结构 | Example |
|---|---|---|
| 过去可能是某状态 | may/might have been | She might have been asleep. |
| 过去可能做了 | may/might have done | He may have left. |
| 过去可能正在做 | may/might have been doing | He may have been working. |
| 过去可能没做 | may/might not have done | She might not have known. |
| 过去可能没有正在做 | may/might not have been doing | He may not have been feeling well. |
27. 现在可能 vs 过去可能
这是这一单元最重要的结构。
| 时间 | 结构 | Example |
|---|---|---|
| 现在可能 | may/might + do | He might know. |
| 现在可能正在 | may/might + be doing | He might be working. |
| 过去可能 | may/might + have done | He might have left. |
| 过去可能正在 | may/might + have been doing | He might have been working. |
28. 时间轴
现在可能
He might be at home.
NOW
↓
at home? ↑ might
过去可能
He might have been at home.
PAST NOW
↓ │
at home? │ ↑ might have been
所以：
have + 过去分词
把判断的时间：
从 NOW 推回到了 PAST。
C. could 与 may / might
29. could 也可以表示类似的可能性
图片说明：
could is similar to may and might
例如：
It's a strange story, but it could be true.
这个故事很奇怪，但它可能是真的。
等同于：
It is possible that it's true.
30. could be ≈ may be / might be
| Expression | 核心意思 |
|---|---|
| It may be true. | 可能是真的 |
| It might be true. | 可能是真的 |
| It could be true. | 有可能是真的 |
三者都可以表示：
possibility
31. could have done ≈ may/might have done
例如：
You could have left your phone at work.
你可能把手机落在公司了。
意思：
It's possible that you left it there.
所以：
| 结构 | Example |
|---|---|
| may have done | You may have left it there. |
| might have done | You might have left it there. |
| could have done | You could have left it there. |
都可以表示：
过去可能发生了某事。
32. 但是 couldn't 和 may not / might not 不一样
这是这一页非常重要的区别。
couldn't ≠ might not
33. couldn't have done
Sarah couldn't have received my message.
Sarah 不可能收到我的消息。
原因：
Otherwise she would have replied.
否则她应该已经回复了。
这里：
couldn't have received
意思是：
it is not possible that she received it
也就是：
不可能发生。
34. might not have done
I suppose she might not have received it.
我想她可能没有收到。
意思：
it's possible that she didn't receive it
也就是说：
她可能收到，也可能没有收到。
只是：
“没收到”是其中一个可能。
35. couldn't have vs might not have
| couldn't have | might not have |
|---|---|
| 不可能发生过 | 可能没有发生 |
| impossible | possible negative |
| 接近确定否定 | 不确定 |
| She couldn't have received it. | She might not have received it. |
| 她不可能收到 | 她可能没收到 |
36. 逻辑差异
couldn't have
possibility
0% ───────────────────────── 100%
↑
couldn't have
意思：
几乎不可能。
might not have
possibility
0% ───────●───────────────── 100%
↑
might not have
意思：
“没有发生”有可能，但不确定。
37. Example 对比
couldn't have received
Sarah couldn't have received my message.
说话者认为：
她不可能收到。
确定度很高。
might not have received
Sarah might not have received my message.
说话者只是提出一种解释：
也许她没有收到。
但：
也许她其实收到了。
38. may not / might not 不是 can't
这一点非常重要。
may not / might not
可能不……
例如：
He might not come.
他可能不来。
这里：
来 / 不来都有可能。
can't
不可能……
例如：
He can't be at home.
他不可能在家。
这里：
说话者强烈认为“在家”不成立。
39. 对比表
| Expression | 中文 | 核心逻辑 |
|---|---|---|
| may be | 可能是 | possible |
| might be | 可能是 | possible |
| could be | 有可能是 | possible |
| may not be | 可能不是 | possible negative |
| might not be | 可能不是 | possible negative |
| can't be | 不可能是 | impossible |
40. 过去版本
| Expression | 中文 |
|---|---|
| may have been | 过去可能是 |
| might have been | 过去可能是 |
| could have been | 过去有可能是 |
| may not have been | 过去可能不是 |
| might not have been | 过去可能不是 |
| couldn't have been | 过去不可能是 |
41. Unit 28 + Unit 29 可以连起来理解
上一单元：
must / can't
这一单元：
may / might / could
刚好形成一个“推测强度”体系。
| 判断 | Expression | 中文 |
|---|---|---|
| 很确定是真的 | must | 一定 |
| 有可能 | may / might / could | 可能 |
| 有可能不是 | may not / might not | 可能不 |
| 很确定不是真的 | can't / couldn't | 不可能 |
42. 可能性梯度
可以建立这样的思维：
VERY LIKELY
│
▼
MUST
│
│
MAY / MIGHT
/ COULD
│
│
MAY NOT / MIGHT NOT │ ▼ CAN'T │ IMPOSSIBLE
注意：
这不是精确数学概率。
只是帮助理解：
说话者的确定程度。
43. 同一场景对比
假设 Tom 没来上班。
很确定
He must be sick.
他一定生病了。
只是可能
He may be sick.
他可能生病了。
He might be sick.
他可能生病了。
He could be sick.
他有可能生病了。
可能不是
He might not be sick.
他可能并没有生病。
不可能
He can't be sick.
他不可能生病。
44. 过去版本
假设 Tom 昨天没上班。
很确定
He must have been sick.
他昨天一定生病了。
可能
He may have been sick.
他昨天可能生病了。
He might have been sick.
他昨天可能生病了。
He could have been sick.
他昨天有可能生病了。
可能不是
He might not have been sick.
他昨天可能没有生病。
不可能
He can't have been sick.
他昨天不可能生病。
45. 现在和过去的四格结构
| 判断程度 | NOW | PAST |
|---|---|---|
| 一定 | must do | must have done |
| 可能 | may/might/could do | may/might/could have done |
| 可能不 | may/might not do | may/might not have done |
| 不可能 | can't do | can't/couldn't have done |
46. 图片中的全部例句
A — 现在 / 未来
| Example | 中文 |
|---|---|
| He may be in his office. | 他可能在办公室。 |
| He might be having lunch. | 他可能正在吃午饭。 |
| She might know. | 她可能知道。 |
| It may be true. | 这可能是真的。 |
| It might be true. | 这可能是真的。 |
| She may know. | 她可能知道。 |
| It may not be true. | 这可能不是真的。 |
| She might not know. | 她可能不知道。 |
B — 过去
| Example | 中文 |
|---|---|
| She may have been asleep. | 她当时可能睡着了。 |
| You might have left it at work. | 你可能把它落在公司了。 |
| She might not have known about it. | 她可能不知道这件事。 |
| He may not have been feeling well. | 他当时可能感觉不舒服。 |
C — could
| Example | 中文 |
|---|---|
| It could be true. | 这有可能是真的。 |
| You could have left your phone at work. | 你可能把手机落在公司了。 |
| Sarah couldn't have received my message. | Sarah 不可能收到我的消息。 |
| She might not have received it. | 她可能没有收到。 |
47. 最重要的结构表
| 时间 | 状态 | 普通动作 | 进行中的动作 |
|---|---|---|---|
| 现在可能 | may/might be | may/might do | may/might be doing |
| 现在可能不 | may/might not be | may/might not do | may/might not be doing |
| 过去可能 | may/might have been | may/might have done | may/might have been doing |
| 过去可能不 | may/might not have been | may/might not have done | may/might not have been doing |
48. 最实用的判断方法
先问：
我是在推测现在，还是过去？
如果是：
现在
使用：
may / might + 动词原形
例如：
He might be tired.
He might be working.
如果是：
过去
使用：
may / might + have + 过去分词
例如：
He might have been tired.
He might have been working.
49. 第二个判断问题
然后问：
我是说“可能”，还是“不可能”？
可能
may / might / could
可能不
may not / might not
不可能
can't / couldn't
注意：
might not ≠ couldn't
50. 母语思维
may / might
不要机械理解成某个固定概率。
更自然的感觉是：
“我不知道是不是真的，但这个解释说得通。”
例如：
He might be at home.
意思是：
我不知道他在哪里。
但是：
“他在家”是一个合理可能。
may/might have done
则是：
“我不知道过去到底发生了什么，但这是一种合理解释。”
例如：
You might have left your phone at work.
意思：
我不知道手机到底在哪。
但是：
“你把它落在公司”是一个合理解释。
51. 最终思维模型
NOW
UNKNOWN REALITY
│
▼
possible explanation
│
MAY / MIGHT
│
▼
DO / BE
例如：
He might be at home.
PAST
UNKNOWN PAST
│
▼
possible explanation
│
MAY / MIGHT
│
HAVE
│
▼
DONE
例如：
He might have gone home.
一句话记忆
may / might do
现在 / 未来可能……
may / might be doing
现在可能正在……
may / might have done
过去可能做过……
may / might have been doing
过去当时可能正在……
may not / might not
可能不……
can't / couldn't
不可能……
最核心区别：
MUST = 一定
MAY / MIGHT / COULD = 可能
MAY NOT / MIGHT NOT = 可能不
CAN'T / COULDN'T = 不可能
以及：
have + 过去分词 = 把推测从现在推回过去