四年级英语知识点三单元由精品学习网为您提供，供您参考。

一、单词及词组

1. a policeman (policemen)(警察)      2. a policewoman (policewomen)(女警察)

3. a waiter (waiters)(男服务员)         4. a waitress (waitresses)(女服务员)

5. a driver (drivers)(司机)             6. a worker (workers)(工人)

7. a cook (cooks)(厨师)               8. a farmer (farmers)(农民)

9. job(职业)     10. name(名字)   11. their(他(她/它)们的) 12. today(今天)

13. old(老的)     14. about(大约)   15. want(想要)        16. cold(冷的)

17. how old(几岁)       18. how many(多少)      19. look at(看)

二、缩写词

1. aren't = are not          2. what's = what is          3. they're = they are

三、句型

1. What's your job?(你的职业是什么?) I'm a…(我是一位…)

What's his job?(他的职业是什么?) He's a…(他是一位…)

What's her job?(她的职业是什么?) She's a…(她是一位…)

2. What are their jobs?(他/她们的职业是什么?) They're…(他/她们是…)

3. Are they…?(他/她们是…吗?)      Yes, they are.(是，他/她们是的。)

No, they aren't. They're…(不，他/她们不是的。他/她们是…)

4. How old are you?(你几岁了?) I'm…(我…)

How old is he?(他几岁了?) He's…(他…)

How old is she?(她几岁了?) She's…(她…)

5. What's your/his/her name?(你/他/她叫什么名字?)

I'm/He's/She's ××.(我/他/她是××。)

以上是四年级英语知识点三单元，希望帮到您。