【does和do的用法区别】在英语语法中，"do" 和 "does" 都是助动词，用于构成疑问句、否定句和强调句。它们的使用主要取决于主语的人称和数。以下是关于 "do" 和 "does" 的详细对比与总结。
一、基本用法总结
| 项目 | do | does |
| 用法 | 用于第一人称（I）、第二人称（you）及复数形式（we, they） | 用于第三人称单数（he, she, it） |
| 疑问句 | Do you like...? | Does he like...? |
| 否定句 | I don't like... | She doesn't like... |
| 强调句 | I do like this. | He does like this. |
| 助动词 | 构成一般现在时的疑问和否定 | 同上 |
二、具体用法说明
1. 疑问句结构
- 当主语是 I, you, we, they 时，使用 "do"：
- Do you understand?
- Do they go to school by bus?
- 当主语是 he, she, it 时，使用 "does"：
- Does she work here?
- Does it rain often in summer?
2. 否定句结构
- 在否定句中，"do" 和 "does" 后面接 "not"：
- I don't like coffee.
- He doesn't play football.
3. 强调句
- 在强调句中，"do" 或 "does" 可以用来加强语气：
- I do want to go.
- She does know the answer.
4. 动词原形
- 在 "do" 和 "does" 后面，动词要使用原形：
- Do you eat breakfast every day?
- Does he speak Chinese?
三、常见错误与注意事项
- 主语与助动词不一致
错误：He do like apples.
正确：He does like apples.
- 忽略动词原形
错误：They don't goes to school.
正确：They don't go to school.
四、总结
| 类型 | do | does |
| 主语 | I, you, we, they | he, she, it |
| 疑问句 | Do + 主语 + 动词原形 | Does + 主语 + 动词原形 |
| 否定句 | 主语 + do/does + not + 动词原形 | 同上 |
| 强调句 | 主语 + do/does + 动词原形 | 同上 |
通过以上对比可以看出，"do" 和 "does" 的主要区别在于主语的人称和数，正确使用有助于提高英语表达的准确性与自然度。
