Unit 4 Don’t eat in class Section A 2 (Grammar Focus-3c) 同步优学案（含答案）

中小学教育资源及组卷应用平台
Unit 4 Don’t eat in class.
Section A 2 (Grammar Focus-3c)
【学习目标】
1. 学习并熟练掌握下列短语。
wear a hat, wear a uniform, dream school
2. 学习并熟练掌握下列句型，谈论校规。
(1) —Can we wear a hat in class?
—Yes, we can. / No, we can’t.
(2) —Does he have to wear a uniform at school?
—Yes, he does. / No, he doesn’t.
(3) —What do you have to do?
—We have to be quiet in the library.
(4) We don’t have to come to school every day.
【重点和难点】
重点：
1. 巩固祈使句的应用。
2. 学习have to 的用法。
难点：
1. 总结用祈使句、情态动词can、must及have to来表达各种规章制度；
2. 能用所学的知识来制定一些简单的规章制度。
【课前预习】
I. 短语互译。
1. in the hallways _________
2. wear a uniform _________
3. 在课堂上____________
4. 在餐厅里___________
II. 句子翻译。
1. --我们可以在课堂上戴帽子吗？
--是的，我们可以。/不，我们不可以。
--Can we wear a hat ____ ______?
--Yes, we _____. / No, we ______.
2. –他必须在学校里穿校服吗？
--是的，他是。/不，他不是。
--_____ he _____ _____ wear a uniform at school?
--Yes, he ______. / No, he ______.
3. --What do you have to do?
--We have to be quiet in the library.
--________________________________
--________________________________
【合作探究】
探究一: 知识链接
Task 1 自学新单词(P21单词)，看谁记得又快又准。(2分钟)
1.______ 图书馆
2.______ 在课堂上
3.______ 准时
4.______ 不得不；必须
5.______ 穿校服
6.______ 安静点
Task 2 用方框中所给词组的适当形式填空。
in class, on time, have to, wear a uniform, be quiet
1. You should ______. The baby is sleeping.
2. She likes ______on school days.
3. We can’t listen to music ______.
4. —Can I finish my homework tomorrow?
—I am afraid not. You ______hand it in today.
5. You can’t arrive late for class. You must be______.
探究二：基础感知
Task 1 观察下列句子，总结祈使句的规律 。
概念：用于表示命令、请求、劝告、警告、禁止等的句子叫做祈使句。 祈使句的主语通常是you,但一般并不说出来；句末用感叹号或句号，朗诵时用降调。

肯定结构 Listen to me! 听我说！
Let me have a look! 让我看一看！
Be a good girl! 要做一个好女孩！ 总结：
祈使句的肯定句通常以1.___________ 开头。
Don’t be late! 不要迟到！
Don’t let him sit there! 别让他坐在那！
Don’t run in the hallways!
不要在走廊里跑！ 总结：祈使句的否定句，在2.__________前加3.__________,表示“不要做什么事”。
No food! 禁止吃东西！
No photos! 禁止拍照！
No talking! 禁止说话！
No smoking！禁止吸烟！ 总结：
No +4.____/ 5._____, 这种否定形式用于公共提示语，表示“禁止”或“规劝”。
祈使句 的回答 -Remember me to your parents.-I will.
-代我向你父母问好。-我会的。
-Don’t forget to turn off the lights.-I won’t.
-别忘了关灯。 -我不会的。 总结：
对祈使句做出回答时，常用
6._______ 和7._______.
小试牛刀：
1.不要在教室听音乐。_______ ________ _______ ______ in class.
2. 我们经常在公交车上看到“禁止吸烟”的标志。
We often see the sign “_______ _________” on the bus.
3. 让我们打篮球吧！ ________ ________ basketball.
Task 2 观察下列句子中的情态动词have to与must并总结规律。
have to must
肯定句 We have to be quiet in the library.
我们在图书管理必须保持安静。
The girl has to help her mom cook dinner.
这个女孩得帮助妈妈做晚饭。 I must start at six tonight.
我必须今晚六点动身。
We mustbe on time for class.
我们必须按时上课。
否定句 We don’t have to finish our homework at school.我们不必在学校完成家庭作业。
Lily doesn’t have to get up early on weekends. We mustn’t copy others’ homework.
我们禁止抄袭他人作业。
疑问句 -Does she have to go to hospital at once?
他不得不马上去医院吗？
-Yes, she does. / No, she doesn’t.
是的，她必须去。/ 不，她没必要去。 -Must I finish it today?
我必须今天完成吗？
-Yes, you must. /
No, you needn’t./ don’t have to.
是的，你必须。/不，你不需要。
发现：1) have to 与must 后面都接________________.
2) have to 表示客观需要，意为“_______________”.
_____(有/无)人称、数和时态的变化，其第三人称单数形式为_______.
3) have to 句型的否定句和疑问句需加助动词_______ /________.
4) must 表示主观需要，意为“___________”.
______(有/无)人称和时态的变化，其否定形式为______,表示“______”.
5) 含must 的一般疑问句否定回答需用___________/___________.
提醒：don’t have to /doesn’t have to没有必要=needn’t
Task 3 Finish 2b on p21.
小试牛刀：
He has to _________ (walk) to school today.
2. You must _________ (be) tired.
3. She ________ (have) to do her homework now.
4. She has to stay at home. (改为一般疑问句)
________ she _______ _______ stay at home?
5. Must I finish my homework before seven o’clock? (否定回答)
No, ______ ______. 或：No, ______ _________ ________ ________.
探究三：探究未知
Step 2 Explore the unknown
Task1 Discussion
Have a discussion about the tasks in preview. （讨论预习任务并核定答案。）
Task 2 Presentation
① Look at the pictures and speak out the rules in different ways.
② Present the answers of 2b.
③ Make up three cool rules for your dream school, share your rules with the class. (向同学分享你梦想学校的三条规则)
①. _______________________________________________________
②. _______________________________________________________
③.________________________________________________________
Task 3 阅读课本Grammar Focus 的对话，根据上下文完成对话。
Don’t run in the hallways. Don’t ______(打架).
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 h______.
Can we wear a hat in class? Yes, we ______. /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 q______ in the library.
探究四：课堂·要点精讲点拨
I. 要点点拨。
1. Can we wear a hat in class? 我们可以在课堂上戴帽子吗？
wear vt. 穿；戴，表示状态。
例如：He wears a black T-shirt.他穿着一件黑色的T恤衫。
【拓展】辨析：wear，put on， dress与(be) in
wear 意为“穿着”，表示穿的状态。 He always wears watch. 他总是戴着手表。
put on 意为“穿上”，强调穿的动作。 Put on your clothes quickly.赶快穿上衣服。
dress 意为“给……穿衣”，后跟人作宾语。既可指动作也可指状态。 She can dress herself.她会自己穿衣服。
(be) in 意为“穿着……颜色的衣服”，后跟颜色或衣服，表示状态。 She is in red. 她穿着红色的衣服。
2. We have to be quiet in the library. 我们不得不在图书馆里保持安静。
(1)have to 不得不，必须，可用于各种时态，其后接动词原形，含有迫不得已的成分。例如：We have to wear sports shoes for gym class.上体育课，我们必须穿运动鞋。
【拓展】辨析have to 与must
have to 表示客观需要，即周围环境、习惯要求某人不得不或必须去做某某事，可用于各种时态。 It is raining all day, so I have to stay at home.整天都在下雨，所以我不得不呆在家里。
must 强调个人主观的命令或强制劝告，有“必要，必须”的意思，must只用于一般现在时，在否定句中或作否定回答时，用needn’t ，而mustn’t 表示“决不可”。must 没有过去时。 I must do my homework now.
我现在必须做作业。
(2) quiet adj.安静的”，其副词形式为quietly。be quiet相当于keep quiet.
例如：Don’t be noisy. You must be quiet.不要吵，你一定要保持安静。
II. 趁热打铁。
1. We have to ______ uniforms at school.
A. wear B. put on C. in D. have
2. It’s raining all day, so I _____ stay at home.
A. must B. have to C. must to D. can
3. You have a cold, so you must _______ at home.
A. be quietly B. keep quietly C. keep quiet D. keep noisy
【课时小结】
重点单词
library n.图书馆
重点词组
in class 在课堂上
on time 准时
have to 不得不
wear a uniform 穿校服
be quiet 安静点
重点句式
1.—Can we wear a hat in class? 我们能戴帽子上课吗？
—Yes, we can./ No, we can’t. 是的，我们可以。/不，我们不可以。
2.—Does he have to wear a uniform at school? 他必须穿校服去上学吗？
—Yes, he does./ No, he doesn’t. 是的，他必须。/不，他不必。
【达标检测】
Ⅰ.根据句意及汉语提示填写单词。
1．Jane is ________(在外面) now.
2．Jack has to ________(穿) his school uniform at school.
3．It's ________(重要的) to learn English well.
4．What do I need to ________(带来) to the party?
5．The library is very ________(安静的)．
Ⅱ.用括号内所给单词的适当形式填空。
6．________(not be) late for class.
7．He ________(have) to read English every morning.
8．Do you have to ________(wear) school uniforms every day?
9．Tony ________(not have) to school every day.
10．Please ________(be) quiet in the library.　　　　　　　　　　　　　　　　　　　　　　　　　
Ⅲ.单项选择。
(　　)11.________watch TV. You have to take the piano lesson now.
Do B．Don't C．Don't do D．Can't do
(　　)12.(乐山中考)—The manager says that there's no hot water after 8：00 tonight.
—You mean we ________ go to bed without a shower. How terrible!
A．can　　　　　　　　B．have to　　　　　　　　C．may
(　　)13.(宁波中考)—________ you leave now? You only arrived here an hour ago.
—Sorry，but so much homework is waiting for me.
A．May B．Must C．Can D．Might
(　　)14.(黄冈中考)—What are the rules at your school?
—Don't run in the hallways and ________ arrive late for class.
A．not to B．won't C．don't D．no
(　　)15.(江西中考)We ________pay to get into the concert. It's free.
A．can't B．mustn't C．might not D．don't have to
Ⅳ.按要求完成下列句子，每空一词。
16．Can you ride your bike at school? (作否定回答)
________，I ________.
17．We can't be late for school.(改为同义句)
We can't ________ ________ for school.
18．Mary has to help her mother with cooking.(改为一般疑问句)
________Mary ________to help her mother with cooking?
19．They have to do some cleaning on Friday.(对画线部分提问)
________ ________ they have to ________ on Friday?
20．You can't wear a skirt at school.(改为祈使句)
________ ________ a skirt at school.
【教师寄语】
Time, Time again, I ask myself
【自我评价】
1. 本课我学会了什么？
_________________________________________________________________
2. 通过本课的学习，我还有哪些疑问？
_________________________________________________________________
参考答案：
【课前预习】
I. 短语互译。
1. 在走廊里 2.穿校服 3.in class 4. in the dining hall
II. 句子翻译。
1. Can; in class; can; can’t 2. Does; have to; does; doesn’t
3.--你们必须做什么？ --我们必须在图书馆里保持安静。
【合作探究】
探究一: 知识链接
Task 1
1. library
2. in class
3. on time
4. have to
5. wear a uniform
6. be quiet
Task 2
1. be quiet
2. wearing a uniform
3. in class.
4. have to
5. on time.
探究二
Task 1
1. 动词原形
2. 动词
3. Don't
4. 名词
5. 动词ing形式
6. will
7. won't
小试牛刀：
1. Don't listen to music
2. No smoking
3. Let's play
Task 2
发现：
1. 动词原形
2. 必须，不得不 ； 有；has
3. do、does
4. 必须；无；mustn't；禁止，一定不要
5. needn't；don't have to
Task 3小试牛刀：
1. walk
2. be
3. have
4. Does；have to
5. you needn't; you don't have to.
探究三
Task 2
1. We can eat in class.
2. We don’t have to come to school every day.
3. We can listen to music in the classroom.
Task 3
1. fight 2. be 3. hall 4. can 5. have 6. quiet
探究四1—3 ABC
【达标检测】
1. outside　2. wear　3. important　4. bring　5. quiet
6. Don't be　7. has　8. wear　9. doesn't have　10. be
11－15　BBBCD
16. No；can't　17. arrive late　18. Does；have　19. What do；do　20. Don't wear
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