反意疑问句两步搞定——前肯后否、前否后肯，配例句和做题三步法
引言
反意疑问句是中考单选的高频考点。很多同学一看到逗号后面那个小尾巴就慌，其实记住八个字就够了：前肯后否，前否后肯。
抖音上一条"反意疑问句先找否定词"视频把做题步骤讲得很清楚。这篇文章帮你一次搞懂。
核心规则：前肯后否，前否后肯
```text
前面是肯定 → 后面用否定
前面是否定 → 后面用肯定
```
前肯后否
```text
She is a doctor, isn't she?
（她是医生，不是吗？）
You like English, don't you?
（你喜欢英语，对吧？）
```
前否后肯
```text
She isn't a doctor, is she?
（她不是医生，是吗？）
You don't like English, do you?
（你不喜欢英语，是吗？）
```
做题三步法
```text
- 找否定词：前面有没有 not / never / hardly / little？
- 判断方向：前肯→后否，前否→后肯
- 找助动词：和前面句子的助动词保持一致
```
助动词怎么选
反意疑问句的助动词要和前面句子一致：
```text
前面有 be 动词（am/is/are/was/were）→ 用 be
前面有情态动词（can/must/should）→ 用情态动词
前面是实义动词 → 用 do/does/did
```
例句：
```text
He is tall, isn't he? （be 动词 → isn't）
She can swim, can't she? （情态动词 → can't）
They like music, don't they? （实义动词 → don't）
He went home, didn't he? （过去时 → didn't）
```
主语用代词
后面的主语必须用代词，不能重复名词：
```text
错：Tom is happy, isn't Tom?
对：Tom is happy, isn't he?
错：The students are here, aren't the students?
对：The students are here, aren't they?
```
实战练习
```text
- You are a student, ______?
→ aren't you
- He can play the piano, ______?
→ can't he
- They went to park yesterday, ______?
→ didn't they
- She doesn't like apples, ______?
→ does she
```
总结
反意疑问句核心：
```text
前肯后否，前否后肯
助动词和前面一致
主语用代词
```
```text
今日小抄：
You are a teacher, aren't you? 前肯后否
He can't swim, can he? 前否后肯
She likes music, doesn't she? 实义动词用does
They went home, didn't they? 过去时用did
```