| 推测现在(情态动词 + do) | 推测过去(情态动词 + have + done) |
|---|---|
| 'The play may begin at any moment,' I said. | 'It may have begun already,' Susan answered. |
| must/can't/may + do 表示对现在、未来的推测 | may/must/can't + have + done 表示对过去的推测 |
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| at the moment =now |
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|---|---|
| at that moment =just then 就在那时 |
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| Can you...? 你可以...吗?(第二人称不能用may 来表示) |
|---|
| out of stock 缺货;售罄 |
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|---|---|
| out of order 不工作,损坏 |
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for next Wednesday's performance 用名词所有格来取代时间,“…时间的”用介词for, 起修饰作用。
| ticket to + 地点 去…的票 |
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情态动词表示情绪、态度、可能性,后面跟动词的原形,不能单独使用。
| can 常用于否定句cannot推测为“不可能”与must相反 | Can I use your phone please?(能够) | Of course you can/may.(肯定) |
|---|---|---|
| Could can的过去式是更委婉的表达方式 | Could I use your phone please? (能够) | |
| May 疑问句中“May”只能接主语“I” | May I use your phone please?(可以) | No, you can’t/ may not.(否定) |
| Might may的过去式,语气与态度上更真诚(现在时中可用) | Might I use your phone please?(可以) |
may 和 might 表推测翻译为“可能…”,而must做为推测最高级翻译为“肯定...”。may 可以用 might 代替,语气更委婉,更有礼貌,但时间上没有区别。
| may/might + do 表示对现在或未来事情的推测 |
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|---|---|
| may/might + have + done 表示对过去事情的推测 |
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| may/might as well + do 还是…好(无可奈何),不妨… |
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| 原型 (Base Form) | 过去式 (Past Tense) | 过去分词 (Past Participle) |
|---|---|---|
| sell | sold | sold |