八年级英语人教版第一单元主要围绕日常健康话题展开，包含常见病症表达和应对建议。以下是核心句型及短语的整理：

一、常见病症表达

1. 胃痛：

- I have a stomachache. / What's the matter with you？

- You shouldn't eat so much next time.

2. 发烧：

- Do you have a fever？

- Yes, I do. / No, I don't.

3. 牙痛：

- Does he have a toothache？

- Yes, he does.

4. 头痛/喉咙痛：

- I have a headache. / I have a sore throat.

二、应对建议句型

1. 休息建议：

- You should lie down and rest.

2. 温度测量建议：

- Should I take my temperature？

- No, you shouldn’t. / Yes, you should.

三、其他常用表达

描述症状：

The pain is in my stomach. / The headache is really bad.

建议就医：

See a dentist. / Get an X-ray.

建议结合具体场景练习这些句型，注意疑问句需用助动词do/does，否定回答用doesn't，肯定回答用does。