九年级英语第三单元知识点完整版

Unit3 Teenagers should be allowed to choose their own clothes.

熟记以下短语：

1. be allowed to do sth 被允许干…

allow sb to do sth 允许某人干…

allow doing sth 允许干…

2. sixteen-year-olds = sixteen-year-old boys and girls 16岁的孩子

3. part-time jobs 兼职工作

4. a driver’s license 驾照

5. on weekends 在周末

6. at that age 在那个年龄段

7. on school nights 在上学期间的每个晚上

8. stay up 熬夜

9. clean up (相当与及物动词) 清扫

10. fail (in) a test 考试不及格

11. take the test 参加考试

12. the other day 前几天

13. all my classmates 我所有的同学

14. concentrate on 全神贯注于

15. be good for 对…有益

16. in groups 成群的,按组的

17. get noisy 吵闹(系表结构)

18. learn from 向某人学习

19. at present 目前,现在

20. have an opportunity to do sth 有做…的机会

21.English-English dictionary 英英词典

22. at least 至少

23.eight hours’ sleep a night 每晚8小时的睡眠

24. an old people’s home 敬老院

25. take time to do sth 花费时间干…

26. primary schools 小学

27. have…off 放假,休息

28. reply to 回答,答复

29. get in the way of 妨碍

30. a professional athlete 职业运动员

31. achieve one’s dreams 实现梦想

32. think about 思考,考虑

33. in the end 最后,终于

34. be serious about 对…热忠/极感兴趣

35. spend…on + n. spend …(in) + v-ing 在…上花费时间/金钱

36. care about 关心,担心,在乎

37. agree with 同意…

1.语态：

①英语有两种语态：主动语态和补动语态

主动语态表示是动作的执行者

被动语态表示主语是动作的承受者

Cats

eat fish. （主动语态）猫吃鱼。

Fish is eaten by cats. (被动语态) 鱼被猫吃。

②被动语态的构成

由“助动词be ＋及物动词的过去分词”构成

当我们不知道谁是动作的执行者，或者没有必要指出谁是动作的执行者，或者只需强调动作的承受者时，要用被动语态。

固定搭配、词语辨析：

2. Teenagers should be allowed to choose their own clothes.

allow sb. to do sth. 允许某人做某事（主动语态）如：

Mother allows me to watch TV every night. 妈妈允许我每晚看电视。

be allowed to do sth. 被允许做某事（被动语态）如：

Lily is allowed to go to Qinzhou. 莉莉被允许去钦州。

3. Sixteen-year-olds should be allowed to get their ears pierced.

get their ears pierced 穿耳洞

Sixteen-year-olds=sixteen-year-old teenagers

让/使（别人）做某事 get sth. done (过去分词)

have sth. done (过去分词)

如：I get my car mended. = I have my car mended. 我让别人修好我的车

Practice

1. Do you often allow ______ until 11:00 pm?

A to stay up

B stay up

C staying up

D and stay up

2. Do you think we should be allowed ______our own decisions?

A to make

B making

C make

D to making

3. It _____ to drive after drinking wine.

A is allowed

B is not allowed

C is made

D is welcomed

写出下列句子同义句

1．Sixteen-year-old teenagers can work at places like Target and Walmart.

________ can work at places like Target and Walmart.

2．Why not have your hair cut?

Why not ______ your hair _____?

4. They aren’t serious enough.

enough 足够

形容词＋enough 如：beautiful enough足够漂亮

enough＋名词如：enough food 足够食物

enough to 足够…去做…

如：I have enough money to go to Beijing. 我有足够的钱去北京。

She is old enough to go to school. 她够大去读书了。

5 He should stop wearing that silly earring.

. stop doing sth. 停止做某事Please stop speaking.请停止说话。

stop to do sth. 停止下来去做其他事Please stop to speak. 请停下来去说话。

Practice:

用含enough的短语完成句子

1.I have ______ _______ ______ (足够的位置提供给)everyong.

2.The boy isn’t _____ ______ ______ (年龄不够) go to school。

3.Three pears are ______ ______ (够多) us to last half an hour.

用括号内所给词的适当形式填空。

1.It’s time for lunch. Let’s stop _____ (have) a rest.

2.As soon as the teacher came in, the students stopped ______ (talk).

3.Stop ______ laugh and listen to me.

4.Nothing can _______ (stop) the wheel of the history from _____(go) forward.

8. 倒装句:----We have a lot of rules at my house.

----So do we.

由so＋助动词(be/do/will/have)/情态动词＋主语意为：…也是一样

She is a student. So am I.她是一个学生，我也是。

She went to school just now. So did I . 她刚才去学校了，我也是

She has finished the work. So have I . 她已经完成了工作,我也完成了。

She will go to school. So will he.她将去学校，他也是。

10. Find someone who is allowed to stay up until 11:00pm

Stay up 不睡觉，熬夜

Until 用于肯定句中，谓语动词要用延续性动词，表示这个动作一致延续到until发生的时间为止

Until 用在否定句中，谓语动词要用短暂性动词，表示这一动作从until所表示的时间开始。