【not的用法】“not” 是英语中最常见的否定词之一,用于表示“不”或“没有”。在句子中,“not”通常与动词、助动词或情态动词连用,起到否定作用。掌握 “not”的正确用法对于理解和使用英语至关重要。
一、not的基本用法总结
| 用法类型 | 示例 | 说明 |
| 一般现在时 | I do not like coffee. | 表示当前不喜欢,否定主语+动词原形 |
| 一般过去时 | She did not go to school yesterday. | 否定过去动作,需用助动词“did” |
| 现在进行时 | They are not working now. | 否定正在进行的动作,使用be动词+not |
| 现在完成时 | He has not finished his homework. | 表示到目前为止未完成,用have/has + not + 过去分词 |
| 情态动词 | You must not touch the machine. | 否定情态动词,如can, must, should等 |
| 副词修饰 | She is not very happy. | 否定副词,如very, quite等 |
| 非谓语结构 | He is not to be trusted. | 在被动语态中,not可放在不定式前 |
二、not与其他词的搭配
1. not...but...
- 用于连接两个并列成分,表示“不是……而是……”
- 例句:He is not a teacher, but a doctor.
2. not only...but also...
- 表示“不仅……而且……”
- 例句:She not only speaks English, but also French.
3. neither...nor...
- 表示“既不……也不……”
- 例句:He neither likes coffee nor tea.
4. no...but...
- 表示“没有……而只是……”
- 例句:There is no time, but we have to leave.
三、not的常见错误
| 错误示例 | 正确形式 | 说明 |
| I don't like it.(正确) | I don’t like it. | 不要混淆“don't”和“does not” |
| She does not goes to school. | She does not go to school. | 助动词后必须用动词原形 |
| He is not going.(正确) | He is not going. | 注意不要漏掉be动词 |
| I have not seen him.(正确) | I have not seen him. | 完成时态中不能省略“have” |
四、not的特殊用法
- not at all:完全不
- 例句:I am not at all tired.
- not yet:还没有
- 例句:He has not arrived yet.
- not anymore:不再
- 例句:I do not like it anymore.
- not sure:不确定
- 例句:I am not sure about the answer.
五、小结
“not”是英语中不可或缺的否定词,其用法灵活且多样。根据句子的时态、结构和语境,可以有不同的搭配方式。掌握这些基本规则,能帮助你更准确地表达否定意义,避免常见的语法错误。
通过以上表格和说明,希望你能更好地理解“not”的使用方法,并在实际交流中灵活运用。


