动词分类
- 连系动词 (Linking verbs):表示状态、性质或身份的动词,用来连接主语和表语。
- 情态动词 (Modal verbs):表示情感、态度、能力或推测等含义的动词。
- 实义动词 (Main verbs):表示具体行为或状态的动词,承载动作的核心含义。
- 助动词 (Auxiliary verbs):与其他动词搭配使用,用来构成时态、语态、否定和疑问等结构。
情态动词
概念:表示情感、态度,包括:can(could), must, may(might), will (would) ...
- You must go out! 你必须出去!
- Can you please stand up? 请你站起来好吗?
用法:+ 动词,且原形
- He can do/read it. 他能做/读它。
没有人称和数的变化
| 人称 | Be动词 | 情态动词 |
|---|---|---|
| She | She is... | She can... |
| He | He is... | He can... |
| It | It is... | It can... |
| I | I am... | I can... |
| They | They are... | They can.. |
一般疑问句:情态动词提前
| 陈述句 | 一般疑问句 | 回答 |
|---|---|---|
| He can read it. | Can he read it? | Yes, he can. |
| He can do it. | Can he do it? | Yes, he can. |
情态动词的否定句:
- can → can't(不可用
can not) - can → cannot 要连在一起不能分开
- must → mustn't (表:禁止,绝对不允许) 使用don't need to 替代
- may → may not(要分开)
| 原句 | 变为一般疑问句 | 变为否定句 |
|---|---|---|
| Tom can swim well. | Can Tom swim well? | Tom can't/cannot swim well. |
| The students must finish their homework tonight. | Must the students finish their homework tonight? | The students don't need to finish their homework tonight. |
| I can stay with you. | Can I stay with you? | I can't/cannot stay with you. |
| She can drive to school. | Can she drive to school? | She can't/cannot drive to school. |