Unit4 Don’t eat in class.Section A Grammar Focus-3c课件（17张PPT）

(共17张PPT)
Unit 4
Don’t eat in class.
Section A
Grammar Focus-3c
Lead In
Please take a piece of paper and write down some school rules.Then make some new school rules. And discuss them in groups.
Don’t play sports in the classroom.
Play sports on the playground.
Lead In
Don’t fight.
Don’t eat in the classroom.
Don’t run in the hallways.
Don’t listen to music in class.
Grammar Focus
Don’t run in the hallways. Don’t fight.
What are the rules We must be on time for class.
Can we eat in the classroom No, we can’t, but we can eat in the dining hall.
Can we wear a hat in class Yes, we can./No, we can’t.
Does he have to wear a uniform at school Yes, he does./No, he doesn’t.
What do you have to do We have to be quiet in the library.
Grammar point 祈使句
1.祈使句的含义
用于表示命令、请求、劝告、警告、禁止等的句子叫祈使句。祈使句最常用于表达命令, 祈使句因对象 (即主语)是第二人称，所以通常省略主语。祈使句常用一般现在时，句末使用句号或感叹号来结尾。
2.祈使句的句式结构
(1) please开头的句型
肯定句：Please+动词原形(+宾语)+其他．
·Please stand up．请起立。
否定句：Please+don’t+动词原形(+宾语)+其他．
·Please don’t stand up．请不要起立。
Grammar point 祈使句
(2) 动词原形开头的句型
肯定句：动词原形+其他．
·Clean your room．打扫你的房间。
否定句：Don’t+动词原形+其他．
·Don’t talk in class．不要在课上讲话。
(3) let开头的句型
肯定句：Let+宾语+动词原形+其他．
·Let me help you．让我来帮助你。
否定句：Don’t+let+宾语+动词原形+其他．
·Don’t let her go．不要让她走。
Grammar point 祈使句
(4) be开头的句型
肯定句：Be+表语(名词或形容词)+其他．
·Be a good child．要做一个好孩子。
否定句：Don’t+be+表语(名词或形容词)+其他．
·Don’t be a bad child．不要做坏孩子。
(5) no开头的句型
否定句：No+动名词！
·No smoking．不要抽烟！
Grammar point 祈使句
【拓展】祈使句的回答：
①肯定祈使句的回答常用以下几种：
OK. / All right．行。/好吧。
OK, I will． 行，我会的。
Sure.／Of course. /Certainly. 当然可以。
No problem． 没问题。
②否定祈使句的回答：
OK. / Sorry, I won’t．好的。／抱歉，我不会这样做了。
Grammar point 祈使句
3.祈使句的反意疑问句
祈使句的反意疑问句句末用 will you/won’t you。
但是, 以 let’s开头的祈使句的反意疑问句句末用shall we;
以let us(let’s分开写)开头的句末要用will you。
·Don’t eat here, will you 不要在这里吃东西，好吗？
·Let’s go, shall we 我们走吧，好吗？
·Let us work together,will you 让我们一起努力工作,好吗？
Grammar point 祈使句
祈使句: 表示请求、命令等语气的句子,其结构为省去主语you的简单句.
肯定祈使句 否定祈使句
1. Sit down.
2. Come in.
3. Eat at home.
4. wash your hands.
5.Listen to music outside.
Don’t sit down.
Don’t come in.
Don’t eat at home.
Don’t listen to music outside.
Don’t wash your hands.
Do you know the rules in these places
Do you know the rules in these places
3a
Write the rules for the school library.
1
2
3
4
Library Rules
1. Don’t talk. .
2. .
3. .
4. .
Don’t eat in the library.
Don’t listen to music.
Don’t take photos.
3b
Use the words to make questions about the rules.
Then write answers according to your school.
Be quiet
Q: Does she have to be quiet in the library
(she/have to/in the library)
A: Yes, she does.
Eat
Q: _______________________________
(he/have to/in the dining hall)
A: _______________________________
Does he have to eat in the dining hall
Yes, he does.
Listen to music
Q: ________________________________
(we/can/in the hallways)
A: ________________________________
Wear a hat
Q: _______________________________
(we/can/in the classroom)
A: _______________________________
Can we wear a hat in the classroom
No, we can’t.
Can we listen to music in the hallways
Yes, we can.
3c
Make up five cool rules for your dream school. Share your rules with the class. Your classmates vote for the Coolest School!
1.We can eat in class.
2.We don’t have to come to school every day.
3. ...
At my dream school, we don’t have to come to school every day. We...
1.We don’t have to wear school
uniform.
2.we can wear a hat in class.
3.we don’t have to do homework.
...
Talk about your family rules.
What can’t you do and what do you have to do at home
Then make a list.