资源简介

(共29张PPT)
Grammar focus
Unit 2
No Rules, No Order !
Teaching Objectives
1.在各种情境中，观察和分析句子，深入理解辨析祈使句和情态动词的表意功能；(学习理解)
2.掌握祈使句和情态动词表达规则，关注表示命令时的委婉的语气；（应用实践）
3.熟练运用祈使句和情态动词介绍规则，在班级活动中积极参与“绘制规则标识”游戏，最终评选出表现最佳的团队。（迁移创新）
听第一遍：感知歌词，注意动词形式的变化。
英文歌曲导入
________ let them in. _________ let them see
______ the good girl . You always have to be
Conceal, don't feel ,don’t ________ them know
Well, now they know.
____________. ____________.
Can't hold it back anymore
Let it go. Let it go
______ away and slam the door
I don’t care what they’re going to say
_____ the storm rage on
The cold never bothered me anyway
Don’t
Be
Don’t
Let it go
Turn
Let
let
听第二遍：填所缺的单词。没听清可以多听几次。
Let it go
英文歌曲导入
Don't let them in, don't let them see
别让别人知道，别让别人看到
Be the good girl you always have to be
做个好姑娘，你必须一直都是
Conceal, don't feel, don't let them know
要隐藏，不要动真情，不要让别人知道
Well, now they know
好吧，现在他们知道了
（观察总结）What do they have in common
祈使句
表示命令、请求、劝告、警告和禁止等的句子。
1.Let it go, let it go
随他吧，随他吧
2.Turn away and slam the door
转过身关上门
3.Can't hold it back anymore
反正再也无法隐瞒
1.动词原形开头；在祈使句中，通常省略主语you，其肯定形式以动词原形开头，否定形式是在动词原形前加don’t。
2.表示“劝告”一般用来表示请求、命令、劝说、号召、警告等。
3.祈使句句尾用句号或感叹号，读时用降调。为表示礼貌，可以在句首或句尾加上please。句末用please时，前面通常加逗号。
观察句子，总结祈使句的特点
肯定句：________ (+宾语)+其他.
否定句：_____+动词原形 (+宾语) +其他.
1. 上学日请穿校服。
Wear the school uniform on weekdays, please.
Don’t watch TV before dinner.
2. 晚饭前不要看电视。
Do型祈使句
动词原形
Don’t
Let’s learn imperatives
Be型祈使句
肯定句：____+表语+其他.
否定句：______+be+表语 +其他.
1. 下次要细心。
Be careful next time.
2. 图书馆不要吵闹!
Don’t be noisy in the library!
=Be quiet in the library.
Be
Don’t
Let’s learn imperatives
肯定句：____+宾语+_________+其他.
否定句：____+let+宾语+动词原形+其他.
或Let+宾语+___+动词原形+其他.
1. 咱们休息一下吧。
Let’s have a rest.
2. 不要让他去游泳。
Don’t let him go swimming.
=Let him not go swimming.
Let
动词原形
Don’t
not
Let’s型祈使句
Let’s learn imperatives
No型祈使句
No+v-ing! / No+名词!
3. 禁止钓鱼!
2. 禁止停车!
1. 禁止拍照!
No fishing!
No parking!
No photos!
Let’s learn imperatives
肯定祈使句
① Do型祈使句
② Be型祈使句
③ Let型祈使句
否定祈使句
动原+其他
Don’t+动词原形+其他
Be+表语+其他
Let+宾语+动原+其他
Don’t+be+表语+其他
Don’t+let+宾语+动原+其他
Let+宾语+not+动原+其他
表示
“禁止”
④ No型祈使句
No+动词-ing!
No+名词!
Let’s summarize
Let’s practice
Don’t be
1. It’s an important meeting. (not, be) late.
2. (not, make) any noise! Your mother is sleeping.
3. (not, talk) and (read) aloud.
4. The notice on the wall says “ ”. (no smoke)
5. (look) out! A car is coming.
6. (not, let) the baby cry.
7. Let’s (not say) anything about it.
Don’t talk
Don’t make
read
No smoking
Look
Don’t let
not say
3a. Read the sentences. Do the verbs in bold need to change forms Why
Walk in the hallway. Don’t run!
Be polite and treat one another with respect. Don’t litter. / You mustn’t litter. / You can’t litter.
Can we bring our phones to class No,we can’t. We must keep them in our lockers.
Can we eat snacks in class No,we can’t eat in class. We have to eat in the dining hall.
No, they don’t. Because the verbs appear in imperative sentences or after modal verbs.
祈使句中
情态动词后
2. Can we bring our phones to class
Yes, we can. No, we can't.
1. Can you play the guitar
Yes, I can. No, I can't.
can 常用于询问能力和许可。
能力
许可
情态动词can，must,have to
Sb. can/can't + V原.
must 表示主观的义务和必要，多译为“必须”。
have to 表示客观需要做的事情，多译为“不得不”
2.她妈妈生病了，她不得不自己做晚饭。
Her mother is ill, she has to cook dinner by herself.
1.他必须在晚上8点前完成作业。
He must finish his homework before 8:00 in the evening.
表示个人主观想法，且没有人称和时态的变化
表示外界客观原因,有人称、数和时态的变化 have to-has to
例句展示
plete then sentences using can, have to/ must, can’t/mustn't.
Don't jump the queue. You ____________wait for your turn.
I feed my dog many kinds of food, but I ___________ give him chocolate. It is bad for him.
have to/must
have to/must
can't/mustn't
plete then sentences using can, have to/ must, can’t/mustn't.
3. A: Can I leave the classroom if I don't feel well
B: Yes, but you ______________ tell your teacher about it when you ____________ be absent from class.
must/have to
have to
plete then sentences using can, have to/ must, can’t/mustn't.
4. A: Hey! Can I look at your book
B: Shh, we ______________ talk quietly in the library.
5.A: Can you put on your seat belt We ______________ wear one when we're in a car.
B: Sure. Thanks!
have to/must
have to/must
3c. Look at the first sign and read the rules. Then write the rules for the other signs.
Do not eat or drink.
No eating or drinking.
You can’t / mustn’t eat or drink.
Do not park here.
No parking.
You can’t / mustn’t park here.
Do not take photos here.
No photos.
You can’t / mustn’t take photos.
3c. Look at the first sign and read the rules. Then write the rules for the other signs.
Do not swim here.
No swimming.
You can’t / mustn’t swim here.
Do not feed birds.
No feeding.
You can’t / mustn’t feed birds.
3c. Look at the first sign and read the rules. Then write the rules for the other signs.
Practice: Look at these signs and guess their meanings.
No fishing!
Don’t pick
the flowers.
You mustn’t
smoke here.
Don’t fish here!
No picking
the flowers.
No smoking!
rules
No smoking
No music
Don’t litter
No eating
or drinking
Keep
silence
Be quiet
in class.
Practice: Look at these signs and guess their meanings.
Group Work
3d. In groups, brainstorm three rules for one of the places below. Then draw signs to show the rules. Share your signs in class and explain what they mean.
library
school
dining hall
park
cinema
hospital
一、用have to或has to填空。
1.We ________ clean our classroom after school.
2.She _______ make her bed after getting up.
3.It’s late. Mr Beckman ______ go to work by car.
4.Emily and Peter join a music club. They _______ practice the guitar every day.
have to
have to
has to
has to
Exercises
二、按要求写出正确的单词、词组或句子。
插队(短语) __________ 2. 喂养 (动词) ___________
3. 离开(动词) __________ 4. 缺席(短语) __________
5. 轻声地(副词) __________ 6. 座椅安全带 (短语) __________
7. 制造噪音（短语）__________ 8. 电影院（名词）___________
jump the queue
feed
leave
be absent from
quietly
seat belt
make noise
cinema
Exercises
Exercises
二、按要求写出正确的单词、词组或句子。
9. 在走廊里步行。 ___________________________
10. 我们能把手机带到学校吗？ _______________________
11. 我们不得不在餐厅吃东西。___________________
12. 你能戴上座椅安全吗？ ______________________________________
Walk in the hallway.
Can we bring the phones to class
We have to eat in the dinning hall.
Can you put on your seat belt
三、根据句意，用can和can’t填空。
1. Mr Green______ smoke here because there’s a sign on the wall. It says “No smoking.”
2. It’s very hot outside. You _____ wear a hat.
3. We _____ eat in the classroom because it’s impolite to teachers.
4. I ______ go to bed after 11:00 on school night.
5. The students ____ read books in the library.
can’t
can
can’t
can’t
can
Exercises
Homework
1. remember all the grammar points about imperatives and modal verbs can, have to and must.
2. Make a poster of the rules and draw sings for them.
3. Write a passage to show your family rules by using the grammar you have learned.

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