Unit 4 Don't eat in class Section AGrammar Focus-3b 课件

(共11张PPT)
Unit 4
Don’t eat in class.
Grammar Focus-3b
Learning Aims
Can we eat in the classroom
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.
Library rules
1. Don’t talk.
2. __________
3. __________
________
4. __________
_______
Don’t eat.
Write the rules for the school library.
3a
Don’t listen to music.
Don’t take photos.
Use the words to make questions about the rules. Then write answers according to your school.
3b
1. Be quiet
Q: Does she have to be quiet in the library
(she/have to/in the library)
A: Yes, she does.
2. Eat
Q: ________________________________
(he/ have to/ in the dining hall)
A: _________________________________
Does he have to eat in the dining hall
No, he doesn’t. He can also eat outside.
3. Listen to music
Q: ________________________________
(we/ can/ in the hallways)
A: ________________
4. Wear a hat
Q: _______________________________
(we/ can/ in the classroom)
A: _______________
Can we listen to music in the hallways
Can we wear a hat in the classroom
No, we can’t.
No, we can’t.
祈使句表示请求、命令、劝说、号召、
警告等。表示委婉的祈使语气，可在句首或句末加上please，若在句末加please，之前要用逗号隔开。祈使句有肯定祈使句与否定祈使句两种。
祈使句的常见句型结构
Grammar
1. 肯定祈使句的常见句型结构：
① Do型：动词原形+宾语+其他. 如：
Open the door, please.
② Be型：Be+表语. 如：Be a good boy!
③ Let型：Let+宾语+动词原形+其他.
(或：Let’s+动词原形+其他.) 如：
Let me help you.
又如：Let’s play tennis.
2. 否定祈使句的常见句型结构：
① Do型和Be型的否定式：Don’t+动词
原形 / be+其他. 如：Don’t forget me.
又如：Don’t be late.
② Let型的否定式：Don’t+let+宾语+动词原形+其他. (或：Let’s+not+动词原形+其他.) 如：Don’t let him go back. 又如：Let’s not go swimming.
③ 警示语：No+名词 / 动词-ing形式. 如：
No talking.
用所给单词的适当形式填空。
1. Don’t ________(listen) to music in the
library.
2. Do we have to ________(clean) the room
every day
3. You can’t ________(wear) sunglasses in
the classroom.
4. Please ________(arrive) at school on
time (准时).
5. John is often late for _______ (class).
class
listen
clean
wear
arrive
Class Practice
将下面的句子改为祈使句，每空一词。
1. You can come in.
______ ____, please.
2. I can help you.
_____ me ______ you.
3. You can’t eat in class.
_______ _____ in class.
4. You can’t be late for school.
______ ____ late for school.
5. You can’t take photos here.
____ photos here.
Come in
Let help
Don’t eat
Don’t be
No
Thank you,everyone!Bye-Bye