Unit 4 Don't eat in class. Section A 2 Grammar Focus-3c 课件(共19张PPT)

(共19张PPT)
Unit 4
1、学习和掌握祈使句的概念、基本句型。
2、运用祈使句来制定一些简单的规章和制度。
宪法条例：
第五十三条 中华人民共和国公民必须遵守宪法和法律，保守国家秘密，爱护公共财产，遵守劳动纪律，遵守公共秩序，尊重社会公德。
第五十四条 中华人民共和国公民有维护祖国的安全、荣誉和利益的义务，不得有危害祖国的安全、荣誉和利益的行为。
第五十五条 保卫祖国、抵抗侵略是中华人民共和国每一个公民的神圣职责。
祈使句是表示请求、命令、建议等的句子。句子中通常不出现主语，谓语动词一律用原形。根据句子语气的强弱，句末用感叹号或句号。分为：肯定式和否定式。
一、祈使句的肯定式
1. 以行为动词原形开头，简称Do型。
e.g. Come here. 到这儿来。
2. 以动词be开头，简称Be型。
e.g. Be quiet, please. 请安静。
3. 以Let开头，简称Let型。
e.g. Let’s go! 咱们走吧!
注意
有时可在祈使句的句首或句尾加上please，使语气显得客气、有礼貌。如果在句尾加please，应该用逗号与前句隔开。
e.g. Sit down, please. 请坐。
将下列句子翻译成英语。
1. 请看这幅图画。
2.在图书馆保持安静。
Be quiet in the library.
3. 让我们帮助他。
Let's help him.
Please look at the picture. / Look at the picture, please.
二、祈使句的否定式
1. Do型和Be型的否定式是在句首加don’t。
e.g. Don’t sit here. 不要坐在这儿。
Don’t be late. 别迟到。
2. 以let开头的祈使句，其否定式有两种：
一种是直接在句首加don’t，另一种是“let + 宾语 + not +动词原形+ (其他)”。
e.g. Don’t let him go. 不要让他走。
Let’s not go there. 咱们别去那儿。
注意
“No+名词/动词 ing形式”表示禁止或规劝，常用于公共场所。
e.g. No photos! 禁止拍照！
No smoking！ 禁止吸烟！
将下列句子翻译成英语。
1、 不要在教室里跑。
Don’t run in the classroom.
2、 上课不要迟到。
Don’t be late for class.
3、不要让他去外面吃东西。
Don't let him eat out./Let him not eat out.
Library Rules
Don’t talk.
__________________
__________________
__________________
Activity1:Write the rules for the school library.
Don’t listen to music.
Don’t eat or drink.
Don’t take photos.
方法指导：
1. 由图示可知都是一些禁止类的祈使句。
2. 可知应用“Don’t + 动词原形”句子。
At my dream school, we don’t have to come to school every day. …
We can eat in class. …
Activity2: Make up five cool rules for
your dream school. Share your rules with the class.
At my dream school, we don’t have to come to school every day. We can eat in the classroom.
We can listen to music in class.
We don’t have to do homework.
We don’t have to wear school uniforms at school.
Discuss and make rules for the computer room in your school.
Computer room Rules
_______________
_______________
_______________
________________
________________
Activity3:
Group work
Computer room Rules
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
Be quiet in the computer room.
Don’t eat or drink in the computer room.
Don’t run in the computer room.
Wear slippers in the computer room.
Clean the computer room every day.
1. _____ talk in the reading room.
A. Don’t B. Not C. No
2. Let’s ____ volleyball.
- That sounds good
A. play B. to play C. plays D. to plays
3.We are at the library . Please ___ quiet .
A. do B. be C. can D. are
句型转换
Exercise
A
B
B
4. No photos. (改为同义句)
5. Play volleyball after class. (改为否定句)
Don't play volleyball after class.
6.You don't run in the hallways.(改为祈使句)
Don' run in the hallways.
Don't take photos.
Homework
1. Remember the sentences in the
Grammar Focus.
2. Write five rules in your family.