Unit 4 Don’t eat in class.(Section A 2d-3b)

课件13张PPT。 Section A
Period TwoUnit 4 Don’t eat in class.Talk about the school rules you know with "Don't" and "You
can't ...but you can...".用"Don't" 和“You can't ...but you can..."
谈论你所知道的校规。Step1.Review.School rulesDon’t arrive late for class.
=You can't arrive late for class,but you can be on time.2. Don’t run in the hallways.
=You can't run in the hallways,but you can run on the playground.3. Don’t eat in the classroom.
= You can't eat in the classroom,but you can eat in the dining hall.4. Don’t listen to music in class.
=You can‘t listen to music in class,but you can listen to music after class.5. Don’t fight.
=You mustn't fight. You can be good with others.Reading.
Read 2d, find out what rules their school has.
阅读2d，找出他们的学校有哪些校规。1.Don't be late for class.2.Don't bring music player to school.3.Wear school uniform.4.Be quiet in the library.将以上的祈使句变为陈述句。=We can’t be late for class.=We can’t bring music player to school.=We have to wear school uniform.=We have to be quiet in the library.Notes:1. OK, so we must be on time. 对的，所以我们必须守时。
must作为情态动词，表示“必须”、“务必”，有时还表示“一 定”，起到加强语气的作用。后接动词原形。如：
You must come tomorrow.
你(们)明天必须来。
She must have this dictionary.
她一定有这本字典。
Must 的否定直接在后加not，缩写为mustn’t.
You mustn’t run on the street. 你不能在街上跑。
变一般疑问句直接将其提前。肯定回答用must,否定用needn’t或don’t have to.
Must I do it now? 我现在就必须做吗？
Yes ,you must. 是的，你必须的。
No, you needn’t / don’t have to. 不，你不必的。2.have?to?的用法:
意思是“必须、不得不”,相当于must.但它侧重于客观上的必要和外界的权威。后面也是接动词原形。 We?have?to?wear?sneakers?for?gym?class. 在体育课上,我们必须穿运动鞋。
Tom?has?to?practice?the?guitar?every?day.?汤姆每天必须练习弹吉它。
注意，have to 变否定或一般疑问句时有要借do 或 does.
Nick?doesn’t?have?to?wear?a?uniform.
尼克不必穿制服。
Do?you?have?to?stay?at?home?on?weekends??
周末你必须呆在家里吗?
Yes,?I?do.?/?No,?I?don’t.?
是的, 我必须。 不, 我不必。Work in groups, finish 3b.Use the words to make questions about the rules. Then write answers according to your school.3b1. Be quite?
Q: Does she have to be quite 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.Library rules
1. Don’t talk.
2. __________
3. __________
________
4. __________
_______Don’t eat.Write the rules for the school library. 3aDon’t listen to music.Don’t take photos.Practice Can we …?
Yes, we can.
No, we can’t.eat in class
listen to music outside
wear hats in school
fight in class
speak loudly in the library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).classlistencleanweararrive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 inLet helpDon’t eatDon’t beNo