Unit 3 Healthy life（易错题专项训练・语法提升）英语人教PEP版六年级上册（新教材）

Unit3 Healthy life
专题02 语法提升·易错题专项训练

should / shouldn’t 完整变换规则

should是情态动词，后必须加动词原形，无人称变化，否定直接加not=shouldn’t，无课文原句标注。

1 基础陈述句（肯定）

结构：主语 + should + 动词原形

例：You should see a doctor. She should exercise.

2 否定句变换

结构：主语 + shouldn’t + 动词原形

例：You shouldn’t stay up late.

3 一般疑问句变换

结构：Should + 主语 + 动词原形？

肯定回答：Yes, 主语 should.

否定回答：No, 主语 shouldn’t.

例：—Should I drink hot water? —Yes, you should.

should没有三单变形，任何人称后面都用原形动词；不能写shoulds/should to do。

一、用should / shouldn’t填空

1. You ____ sleep late. It’s bad for you.

2. We ____ eat healthy fruit every day.

3. She ____ watch TV all night.

4. I ____ exercise to stay healthy.

5. ____ I see a doctor when I have a fever?

二、单项选择

(    )1. You ____ stay up late.

A. shouldn’t  B. should  C. shoulds

(    )2. —Should I drink more water? —Yes, you ____.

A. should  B. shouldn’t  C. are

(    )3. He ____ do sports every morning.

A. should to  B. should  C. shoulds

have疾病句型三单变形规则

表达生病的句型随主语人称变化have/has，纯句子语法，不辨析单词词义。

1 非三单主语（I/you/we/they）：主语 + have + 疾病

例：I have a cold. You have a headache.

2 三单主语（he/she/人名）：主语 + has + 疾病

例：She has a fever. Mike has a cough.

3 否定搭配（结合should）

You shouldn’t have too much cold food.

主语是第三人称单数必须用has；疑问句、情态动词后还原为have。

一、用have / has填空

1. I ____ a bad cold.

2. She ____ a runny nose.

3. Mike ____ a headache.

4. We ____ a cough.

5. You ____ a fever.

二、单项选择

(    )1. Sarah ____ a fever, so she should rest.

A. have  B. has  C. having

(    )2. I ____ a headache and my mum tells me to sleep early.

A. have  B. has  C. has not

How do you feel & What’s wrong 划线提问拔高

两类问句提问对象完全不同，划线提问为本单元必考转换题型。

1 How do you feel?

提问：情绪、身体感受（ill/better/unhappy）

划线提问：I feel ill. → How do you feel?

2 What’s wrong with you?

提问：具体疾病（cold/fever）

划线提问：I have a cold. → What’s wrong with you?

3 答句区分

问感受：I feel + 形容词；问病症：I have a/an + 疾病。

划形容词用How提问；划疾病名词用What’s wrong提问。

 对划线部分提问

1. I feel ill.

________________________________

2. I have a fever.

________________________________

3. She feels better.

________________________________

4. He has a bad cold.

________________________________

5. They feel unhappy.

________________________________

提建议句式同义改写

should句型多种同义替换，用于写作句式丰富，不涉及单词识记。

1 基础同义替换

You should see a doctor. = It’s good for you to see a doctor.

2 否定同义替换

You shouldn’t stay up late. = Don’t stay up late.

3 多人称互换改写

We should exercise. = You should exercise too.

改写时动词始终保持原形，情态动词不变。

同义改写，句意不变

1. You should drink hot water.

________________________________

2. You shouldn’t watch TV all night.

________________________________

3. We should sleep well every day.

________________________________

4. She should eat healthy food.

________________________________

5. You shouldn’t eat too much junk food.

________________________________

人称单复数句型互换

主语I/we/he/she互相转换，同步变换have/has、助动词、情态问答。

1 单数变复数（She → We）

原句：She should sleep early.

改写：We should sleep early.

2 复数变三单（We → He）

原句：We have a cough.

改写：He has a cough.

只有have随三单变化，should所有人称不变。

按要求改写

1. I have a headache.（改为She作主语）

________________________________

2. She should exercise often.（改为We作主语）

________________________________

3. We shouldn’t stay up late.（改为He作主语）

________________________________

4. You have a runny nose.（改为He作主语）

________________________________