人教新目标 (Go for it) 版七年级下册Unit 4 Don’t eat in class.Section A教课内容ppt课件

这是一份人教新目标 (Go for it) 版七年级下册Unit 4 Don’t eat in class.Section A教课内容ppt课件，共24页。PPT课件主要包含了例 让我们帮助你，祈使句的形式，肯定句，Do 型，Be 型，v原形+其他成份，请听我说，请安静，can，Writing等内容，欢迎下载使用。
Grammar Fcus
What are the rules?
Can we eat in the classrm?
We must be n time fr class.
N, we can’t, but we can eat in the dining hall.
Yes, we can./ N, we can’t.
Yes, he des./ N, he desn’t.
We have t be quiet in the library.
(1)let开头的祈使句的肯定句：Let + sb.+ v.（原形）
Dn’t let them cme in.
Let us help yu.
否定为：Dn’t + let + 第三人称代词+v.（原形）
例: 不要让他们进来。
(2)非let开头的祈使句的肯定句和否定句：
Be+表语(名词或形容词）+其他成份.
例：Listen t me, please.
例：Be quiet, please.
Dn’t +实义动词 +其他.
Dn’t + be +其他.
例: Dn’t play cmputer games.
例: Dn’t be late again.
例: N phts. N swimming.
N + 动词ing形式/名词。
Dn’t take phts.
表示“禁止、规劝”，常用于警示语或标语牌。
N Parking.
have t（不得不）的用法
1. have t句式
肯定式: 主语+have/has t + 动词原形
We have t leave nw.She has t wrk n Sunday.
否定式: 主语+dn’t/desn’t have t + 动词原形
Yu dn’t have t walk s fast.He desn’t have t buy a new cat.
特殊疑问句:疑问词+d/des+主语+have t+动词原形+…?
What d yu have t d nw?Where des she have t g?
一般疑问式: D/Des+主语+have t+动词原形+…?
--D yu have t study English nw? --Yes, I d.--Des he have t g nw? –N, he desn’t (have t).
2.have t 与must的区别
(1)have t 着重于客观的需要,含有不得不的客观强制性; must着重于主观上自己认为有义务,有必要。
She has t clean the classrm every week.I must g nw.
(2)在否定句中,dn’t have t 表示没有必要, must nt表示不允许,严禁。
Yu dn’t have t g there.Yu mustn’t play ftball n the rad.
(3)must一般只表示现在，没有人称和数的变化。have t可以用于不同的时态，有人称和数的变化。
I/We/Yu/They must wrk hard.I have t finish my wrk tday.She has t finish her wrk tday.They had t get t the statin befre 5:00.
1.can是情态动词，没有人称和数的变化。2.can本身词义不完全，不能单独使用，后面要加实义动词。
1)can表能力。He can speak French.I can play the pian.2)can表许可。Yu can play basketball n weekends.We can’t run in the hallways.
一.单项选择 1. ______ with fire. It’s very dangerus. A. Playing 　 B. Play C. Dn’t play D. Desn’t play 2.The children _____ play ftball n the rad. A. can 　　B. must 　 C. mustn’t 　 D. may
3.My sister ______ be at schl by seven ’clck. 　A. has t　　　 B. have t 　　　 C. had t 　　　D. must t 4. It’s raining all day, s my brther ______ stay at hme. 　A. must 　B. have t　　C. must t 　D. has t
5. It’s very warm utside. Yu ______ wear the cat. A. have t B. hadn’t t C. dn’t have t D. mustn’t6.Mary, ______ in bed. A. nt read B. dn’t read C. n reading D. desn’t read
Library RulesDn’t talk.______________________________________________________
3a Write the rules fr the schl library.
Dn’t listen t music.
Dn’t eat r drink.
Dn’t take phts.
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“Dn’t + 动词原形” 或“N+动词ing/名词” 的句子。
Library Rules
1.N talking! 2. N fd! 3.N listening t music! 4.N phts!
Use the wrds t make questins abut the rules. Then write answers accrding t yur schl.
Be quiet? (she/have t /in the library) Q: Des she have t be quiet in the library? A: Yes, she des.2. Eat? (he/have t/in the dining hall) Q: _________________________________________ A: _________________________________________
2. Eat? (he/have t/in the dining hall) Q: ________________________________? A: _____________3. Listen t music? (we/can/in the hallways) Q: ________________________________? A: _____________ 4. Wear a hat? (we/can/in the classrm) Q: _____________________________? A: ____________
Then answer the questins.
Yes, he des.
Des he have t eat in the dining hall
Can we listen t music in the hallways
N, we can’t.
Can we wear a hat in the classrm
1. Remember the sentences in the Grammar Fcus.2. Write five rules in yur family.