能力 -can -could | 你可以使用 can 当你说某人能够做某事的。 它的过去式可以用Could 或者 was/were able to表达。 | He can speak English. I can’t find my shoes. Can you remember her name? Could you hear what she said? Dinosaurs were able to run fast. Most of us can use computers now, but we couldn’t ten years ago. |
确信 -must -can’t -will | 你可以使用 must 当你确定某件事情是真的的。 如果想要表达不确信的概念可以使用can’t. 你可以使用 will 当你确定某事会发生或者常常发生。 | You must be tired after all your hard work. They must have left by now. You can’t be tired – you’ve only been working for an hour. They can’t have left yet. I will be 18 years old next year. Oil will float on water. I knew it couldn’t be John. |
目的 - will - shall - would | 你可以使用 will 当你准备去做某事。(shall 可以和 I 以及we搭配使用) 。 你可以使用would 如果在有可控制的 条件下发生某事。 | The letter says they will definitely give us our money back. I won’t stay long. I shall be going soon. I would leave tomorrow if I had the money. |
必要 义务 职责 - must - need - have to - have got to - had better | 你可以使用 must 当你说某事必然会发生,或者某人 有责任去做某事。在口语当中， 人们常说have got to 代替have to。 如果没有必要你可以使用needn’t, need not, 或者 don’t need to。 | I must get my hair cut this weekend. All passengers must wear seat belts. The doctor says I’ve got to give up smoking. You don’t need to wear a tie if you don’t want to. You will have to be home by 10 We’ll need to leave soon. I’d better go now or I’ll be late. |
提供帮助 - can - May - shall - will | 你可以使用 Can I …? 当你给别人提供帮助. May I …? 在正式的场合使用. (有时候用 Shall I…?) 你可以用 I’ll。 | Can I get you a cup of tea? Can I get you anything from the store/shop? May I help you, madam? No, it’s all right. I can manage. Shall I carry your bags? I’ll open the door for you. |
许可 -can -may -could | 你可以使用 can 或者 may 当你给出许可 或者得到许可去做某事。Could 比 can 更加有礼貌。 May 常常用于正式场合中。 | You can go home now. Could I use your phone? Can I try it/them on? (in a shop) Could I have the salt, please? May we use your office for a few minutes? |
可能性猜测 -can -may -could -might | 你可以使用 can 当你说某事时可能的。. 你可以使用 may 或者 could 当你说某事发生 有可能，但你不确信是否会发生。重音常常在 情态动词上。(may 或者 could) 而不是里面的动词。 | You can go by bus from Kangxian to Wudu. You may find him in his office. He could be in his office. He might be in his office. I could leave tomorrow, if I had the money. I thought the story could not be true. Perhaps he could win if … |
预言 -will -shall | 你可以使用 will 当你说某事会发生。(shall 可以和 I 以及we搭配使用) 。 | The car will be there on time, I promise. There’s no doubt that we shall win. He won’t make it on time. |
可能性 - should - ought to | 你可以使用 should 或者 ought to 当你说某事 有可能发生，虽然你不完全确信. | We should be there by 6 o’clock We ought to be there by 6 o’clock. If you take the medicine, you should be all right. |
请求 -can -will -could -would | 你可以使用 Can I …? Can you …? 和 Will you …? 寻求某人做某事。 Could I …? Could you …? 以及 Would you …? 会更加的有礼貌些。 | Can I borrow your dictionary? Can you hold my bag? Will you give me a lift to the station? Could I have another cup of coffee, please? Amy, would bring another chair, please? |
建议 - - should - ought to - shall - must | 你可以使用 should 以及ought to 当你 建议某人做某事。(通常用shall I/we…? 问句给出建议). 你可以使用 must 当你建议 某人应该做某事，因为你认为这样做是对的。 | You should get the early bus if you want to be in good time. What should I do? You ought to meet him; he’s really nice. He ought not to smoke. Shall we start the meeting now? You must see ‘Harry Potter’ – it’s a really good film. You shouldn’t work so hard. |
