初中英语人教版七年级下册Unit4Don't eat in class.
人教版英语七年级下册_unit4Don’t_eat_in_class!
reach +地点 (到达某地方 )
2 class 班 ，课 在课堂上 上课
in class
have classes
be late for class
上课迟到
• on time 准时 in time 及时 • 他每天准时到校。 • He gets to school on time everyday • 她及时赶到了医院。 • She gets to the hospital in time.
Are they good students?
What rules are these students breaking?
What are they doing now ?
She is eating an apple .
Dave and Tom
Selina
They’re fighting .
Nick
√
Activity
can
can
can’t
can’t
√ √ √ √ eat in the dinning hall 5. ___
6. ___ eat outside 7. ___ wear a hat
can can can can can can
can’t can’t can’t can’t can’t can’t
bravely. 他们正在勇敢地同敌人战斗。
Grammar
1. 祈使句是表示请求、命令、叮嘱、号召、
劝告等的句子; 通常省略主语you; 句中谓语
动词用动词原形; 句尾一般用降调; 祈使句的
开头是动词原形。
祈使句有肯定和否定两种： e.g. Look out! 小心！ Wait here for me! 在这等我！
七年级下册英语人教版第四单元单词
七年级下册英语人教版第四单元单词Unit 4 Don't eat in class.一、名词（n.）1. rule [ruːl] 规则；规章。
2. hallway [ˈhɔːlweɪ] 走廊；过道。
3. classroom [ˈklɑːsruːm] 教室。
4. fight [faɪt] 打架；战斗。
5. outside [ˌaʊtˈsaɪd] 外面；外部；在……外面。
6. dining hall [ˈdaɪnɪŋ hɔːl] 餐厅。
7. uniform [ˈjuːnɪfɔːm] 校服；制服。
8. dish [dɪʃ] 碟；盘。
9. kitchen [ˈkɪtʃɪn] 厨房。
10. before [bɪˈfɔː(r)] 在……以前；以前。
11. dirty [ˈdɜːti] 脏的。
12. noisy [ˈnɔɪzi] 吵闹的。
13. relax [rɪˈlæks] 放松；休息。
14. read [riːd] 读；阅读。
15. terrible [ˈterəbl] 非常讨厌的；可怕的！16. feel [fiːl] 感受；觉得。
17. strict [strɪkt] 严格的；严厉的。
18. remember [rɪˈmembə(r)] 记住；记起。
19. follow [ˈfɒləʊ] 遵循；跟随。
20. luck [lʌk] 幸运；运气。
21. hair [heə(r)] 头发；毛发。
22. learn [lɜːn] 学习；学会。
二、动词（v.）1. arrive [əˈraɪv] 到达。
2. listen [ˈlɪsn] 听；倾听。
3. wear [weə(r)] 穿；戴。
4. bring [brɪŋ] 带来；取来。
5. practice [ˈpræktɪs] 练习。
6. keep [kiːp] 保持；保留。
7. learn [lɜːn] 学习；学会。
三、形容词（adj.）1. important [ɪmˈpɔːtnt] 重要的。
人教版七级下英语Unit 4 Dont eat in class单元知识复习总结
Unit 4Don't eat in class. 重点词汇重点短语Section A1．in class在课堂上2．arrive late for class＝be late for class上课迟到3．on time准时4．in the hallways在走廊里5．in the dining hall在餐厅里6．listen to听7．at school在学校8．be late迟到9．music player音乐播放器10．bring...to school 把……带到学校来不得不做have to do．11．12．wear a school uniform穿校服13．be quiet安静Section B14．go out外出15．on school nights在上学期间的晚上16．practice the guitar练吉他17．do the dishes清洗餐具18．make breakfast做早饭19．make one's bed整理床铺20．leave sth.in...把……丢在……里21．read a book看书22．think about考虑23．make rules制订规则24．follow the rules遵守规则25．Good luck！祝好运！26．keep sth.＋adj.使……保持……状态重点句型1．Don't eat in class.在课堂上不准吃东西。
2．Don't arrive late for class.You must be on time.不准上课迟到，务必守时。
3．Don't run in the hallways.不准在走廊内乱跑。
4．Don't eat in the classroom.You must in the dining hall.不准在教室里吃东西，务必在餐厅里吃东西。
5．Don't listen to music in class.不准在课堂上听音乐。
初中英语人教版七年级下册Unit 4 Don’t eat in class知识点整理
七年级英语下册Unit4知识点【Useful expressions】1.No talking 不许讲话 (No+动词ing,禁止......)2.the school rules 校规3.eat in class 上课吃东西4.run in the hallways 在过道上追逐打闹5.in the dining hall 在食堂6.fight with sb.=have a fight with sb.和某人打架7.go out on school nights 在上学期间的晚上外出8.on school days 在上学的日子9.arrive late for class= be late for class 上课迟到了10.wear a/the uniform 穿制服11.have to 不得不；必须12.eat outside 外面吃东西13.practice doing sth.练习做某事14.help mom make breakfast 帮助妈妈做早饭17.too many 太多（+可数复数）18.too much 太多（+不可数）19.so many 如此，这么多的（+可数名词复数）20.so much 如此，这么多的（+不可数名词）21.library rules 图书馆规则22.be strict with sb.in sth.在某方面对某人严格23.be quiet 安静24.be noisy 吵闹25.make the teacher unhappy 惹老师不高兴26.make a noise/make noises 制造噪音27.do the dishes 洗碗28.stay at home呆在家里29.on time 准时30.in time 及时31.learn to do sth.学习做某事32.learn from sb.向某人学习33.follow / keep /obey the rules 遵守规定34.break the rules 破坏规则35.make rules 制定规则36.keep one’s hair short 留短发37.think about 考虑38.make one’s bed 铺床39.in your home 在你家40.at home 在家41.Good luck to you! 祝你好运42.remember doing sth.记得做过某事43.remember to do sth 记得去做某事44.listen to sb.听某人说【Target sentences】1.--What are the rules？--Well, you must be on time for class.Don't fight with your classmates.2.We can’t listen to music in the classroom or hallways.3.--Can we bring music players to school?--Yes, we can./No, we can’t.4.And we always have to wear the school uniform.5.--Does he have to wear a uniform at school?--Yes, he does./No, he doesn't.6.--What do you have to do?--We have to be quiet in the library.7.Don't leave the dirty dishes in the kitchen.8.My dad says I can’t play basketball after school because I must do my homework.9.After dinner, I can’t relax,either.I must read a book before I can watch TV.10.I know how you feel.11.There are a lot of things you can do.12.Parents and schools are sometimes strict but remember, they make rules to help us.13.I think it’s best to follow the rules.14.I can’t go out on school nights.15.I have to do my homework after school.16.I must practice the guitar before dinner.【Language points】1.Don’t arrive late for class.（1）arrive v.到达;是不及物动词，若接地点名词，要加介词in或at。
英语人教版七年级下册Unit 4 Don't eat in class.2b
Unit 4 Don’t eat in class. 教师寄语：Where there is a will, there is a way. ‘有志者事竟成。
学习目标：1.知识与技能：能掌握以下句子：（1）.Get up now and make your bed! （2）. Don’t leave the dirty dishes in the kitchen! （3）. I can’t be late. （4）. don’t be noisy, don’t eat in c lass. （5）. I can’t play basketball after school. （6）. I must do my homework. （7）.I can play only on weekends. （8）. After dinner, I can’t relax either. （9）. I must read a book before I can watch TV. （10）. I have to go to bed before 10:00.2.过程与方法：通过阅读短文，获取相关信息，提高学生的综合理解能力。
3.情感态度与价值观：本部分的学习内容仍然是“生活规则”，学习的内容贴近学生的生活。
教学重难点：教学难点：（1）通过阅读短文，综合学习运用本单元所学的句型句式，提高学生的综合英语水平。
（2）能准确获得相关信息，完成相关习题。
预习交流找出本节课所学的规则并翻译成汉语。
展示预习的成果。
小组合作学。
（一）大声朗读课文一遍，让后在书上勾出下列有关Molly在家及在学校里的规则。
完成翻译，组长完成后辅导组员完成。
1.Get up now and make your bed!2. Don’t leave the dirty dishes in the kitchen!3. I can’t be late.4. don’t be noisy, don’t eat in class.5. I can’t play basketball after school.6. I must do my homework.7. I can play only on weekends.8. After d inner, I can’t relax either.9. I must read a book before I can watch TV.10. I have to go to bed before 10:00.（二）1.小组长组织学员学习课文，讨论短文意思并勾画出重点和难点。
人教版英语七年级下册Unit_4Don’t_eat_in_classSection_AGrammar
dining hall
A: Can we listen to music in the
classrooms? B: No, we can’t. We can’t listen to music
in the classrooms. But we can listen to it
(he/ have to/ in the dining hall)? A:N__o_, _h_e_d_o_e_s_n_’_t._H__e_c_a_n__a_ls_o__ea_t__o_u_ts_i_d_e.
3. Listen to music? Q:C__a_n_w__e_l_is_t_en__t_o_m__u_s_ic__in__t_h_e_h_a_l_lw__a_ys?
ride bikes at school.
A: Can we arrive late for class?
B: No, we can't. We can’t arrive late for class.
A: So, don’t arrive late for class.
arrive late for class = be late for class
m__u_s_ic_.___ 4. _D_o_n_’_t_t_a_k_e_
_p_h_o_t_o_s._
3b Use the words to make questions about the rules. Then write answers according to your school.
1. Be quite? Q: _D_o_e_s_s_h_e_h__a_v_e_t_o_b_e__q_u_ie_t_________
人教版英语七年级下册-Unit-4-Don't-eat-in-class-语法解析
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疑问句: must 提前，回答时注意一二人称的互换。肯定用 must， 否定用needn’t. e.g. --Must I go home now?
-- Yes, you must. -- No, you needn’t.
B: And I must clean my room every Saturday. =？
A: Wow, you do have a lot of rules!
2021Dr. Know, There are too many rules! At 6:00 a.m. my mom says, “Get up now and make your bed!”
too many rules “太多的规定”, 其中too many 用来 修饰可数名词复数rules。 e.g. He has too many friends to meet.
修饰不可数名词时, 要用too much e.g. We have too much work to do.
much too 太……much 用来增强语气。后接形容 词或副词。
What can I do. Dr. Know? Molly Brown, New York
表“看”的单词？
either 也。用于否定句和疑问句中。肯定句中用too 表也。
watch，see，look r，read
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Dear Molly, I know how you feel. People always tell us, “ Don’t do this!” or “You can’t do that!” But think about it, Molly. There are a lot of things you can do. You can play basketball on weekends. You can watch TV after you read a book. Parents and schools are sometimes strict，
英语七年级下册unit4Don't-eat-in-class复习要点
英语七年级下册unit4Don't-eat-in-class复习要点unit 4 Don’t eat in class.单词规则规章，到达大厅礼堂听，打架，抱歉，在外面，穿戴，重要的，安静的，练习，碟,盘在----以前，以前，脏的，厨房，更多的，吵闹的，阅读，非常讨厌，感受，记住，幸运，保持，头发学习短语：1. in class 在课上in the classroom 在教室里2. arrive late for class = be late for class 上课迟到arrive in + 大地方arrive at + 小地方3. (be) on time 准时4. fight with sb. 和某人打架5. must + 动词原形必须做某事= have to do sth. 不得不做某事6. bring…to…把…带到…来Bring your book to school (me).7. eat outside 在外面吃饭wear a uniform 穿制服 wear glasses 戴眼镜8. practice the guitar 练习吉它practice playing the guitar 练习弹吉他9. on school nights在上学的晚上on school days在上学的日子10. too many + 可数名词复数too much + 不可数名词表示太多…11. make one’s bed 铺床make breakfast 做早饭make friends 交朋友12. help sb. do sth. help sb. with sth. help sb. with doing sth13.too 肯定句中表示“也”。
either 否定句中表示“也”I can play chess. She can, too.// I can’t play chess. She can’t, either.// I can’t watch TV, I can’t play chess either.14.think about = think of 考虑、认为如：How do you think about this sweater? 你觉得这件毛衣怎样？15.make rules 制定规则follow the rules 遵守规则break the rules 违反规则用法16. keep (+名词或代词)+形容词，表示保持某物怎么样keep quiet 保持安静keep your hair short保持头发短keep your room clean 保持房间干净17.learn sth. 学习某事learn English learn the guitar , learn to do sth.学习做某事learn to speak English / learn to swim18. be strict (with sb.) 对某人严格My mom is strict with me.19. remember 记住，常用短语有：（1）remember sth./sb. 记住某物、某事、某人Please remember this sentence. 请记住这个句子。
新版七年英语下册Unit 4 Don't eat in class.重点句子汉英英汉
1不要上课迟到。
Don’t arrive late for class.2你必须准时。
You must be on time.3不能在走廊里跑跳。
Don’t run or jump in the hallways.4不能在教室里吃东西，你必须在餐厅里吃。
Don’t eat in the classroom.You must eat in the dining hall.5不要在课上听音乐。
Don’t listen to music in class.6不要打架。
Don’t fight.7规则有什么？What are the rules?8禁止带帽子.Don’t wear a hat.9这是我上学的第一天。
It’s my first day at school.10在学校里我得穿校服。
I have to wear a uniform at school.11在图书馆里我们也必须保持安静。
We also have to be quiet in the library.12我们必须上课准时。
We must be on time for class.13他在学校里必须穿校服吗？Does he have to wear a uniform at school?14在我梦想的学校里，我们没必要每天来上学。
At my dream school, we don’t have to come to school every day15禁止拍照。
Don’t take photos.16禁止吸烟。
No smoking.17在上学的晚上他也必须练习弹吉他。
He has to practice playing the guitar on school nights.18不要把脏盘子留在厨房里。
Don’t leave the dirty dishes in the kitchen.19我不能吵闹。
I can’t be noisy.20我也不能放松。
人教版英语七年级下册Unit4Don’teatinclass.知识点及课后作业
第四讲Unit 4 Don’t eat in class. 基础版单元目标总览：【知识点详解】1、Don’t arrive late for class.上课不要迟到。
1）arrive 意为“到达”。
arrive at+小地点，arrive in +大地点。
◆I will arrive in Beijing next week. 我下周到北京。
◆I arrived at the small village on a cold morning. 在一个寒冷的早晨我到达了那个小村庄。
2）arrive 后面跟地点副词here, there, home时，不需要跟介词。
◆arrive home 到家arrive here 到这儿2、You must be on time.你必须准时。
（1）on time＆in timeon time 意为“按时，准时”，指按照规定的时间或者指定的时间做某事；而in time指“及时”，指不迟到或在规定的时间之前或者接近所规定的时间做某事。
◆We must arrive there on time. 我们必须按时到达那里。
At last, the police arrived there in time. 最后警察及时赶到了那里。
（2）must情态动词，意为“必须”，不能单独做谓语，必须和动词原形以其构成谓语；其后接动词原形；其否定形式mustn’t意为“禁止，千万不要”◆I must do my homework before dinner.晚饭前我必须做完作业。
3、Don’t listen to music in class.不要再课堂上听音乐。
（1）listen 是不及物动词，意为“听,倾听”，强调听的动作，后面接宾语时要加上介词to。
◆We should listen to the teacher carefully. 我们应该认真听老师讲课。
◆Listen! Someone is singing in the garden. 听! 有人在花园里唱歌。
人教版初中英语七年级下册Unit4 Don’t eat in class
拓展
情态动词can的用法
用于疑问句中用来提出要求。例如： Can you...？“请你……好吗？”表示说话 人的请求。 Can I...？“我可以……吗？”用来征求对 方是否允许自己做某事。如在句末加上 please一词就显得更有礼貌了。例如：
He gets to school on time everyday
她及时赶到了医院。
She reach the hospital in time.
be strict with sb.
他爸爸对他很严格。
His father is strict with him.
重点短语
……迟到 arrive（be） late for ……
戴帽子 wear a hat/wear hats
School Rules
Don’t arrive late for class.
School Rules
Don’t run in the hallways.
School Rules
Don’t eat in the classroom.
School Rules
2.祈使句的否定形式是在整个结构之前加 don’t或never。如： Don’t be nervous!你不要紧张!
Practice 将下列祈使句改成否定形式。
肯定祈使句 1. Sit down. 2. Come in. 3. Eat at home. 4. Listen to music outside.
fight with sb. 同某人打架 fight the fire 救火
Explanation
fight 是不及物动词，其后加上with才能接宾 语。fight with sb. 意为“与某人打架”。如： Don’t fight with your sister again. 不要再和 你妹妹打架了。 They are fighting with the enemies bravely. 他们正在勇敢地同敌人战斗。
2024年人教版七年级下册英语Unit4单元主题写作指导
单元主题写作
2. wear, school uniform, have to _W__e_/_S__tu_d_e_n_t_s_h__a_v_e_t_o_w_e_a_r__s_ch__o_o_l _u_n_if_o_r_m__s__.
单元主题写作
(二) 假如你是Peter, 你家有许多家规, 对此你感到很不满意。 请根据下面的提示给你的朋友Tom 写一封电子邮件, 告 诉他你的家规。 要求: 不少于70 词。 提示: 1. 早上6:00 起床; 2. 下午五点半前必须回家; 3. 上学日晚上不准看电视; 4. 周末必须打扫房间; 5. ……(发挥两点)
单元主题写作
(二) 写“规章制度类”作文常用句型 开头句 There are too many rules at my school.
单元主题写作
中间句 I must arrive at school before 7 o’clock. I have to wear school uniforms. I can’t listen to music in the classroom. Don’t run in the hallways. Please be quiet in the library.
人Hale Waihona Puke 陕西七年级下Unit 4 Don’t eat in class.
单元主题写作
单元主题写作
一、话题分析 本单元话题为“ 规章制度(Rules)”。要求用情
态动词must, can 和have to 以及祈使句介绍学校或 家庭中的规章制度。
单元主题写作
二、写作方法 “ 总分总法” 介绍规章制度: 总: 开门见山, 引出话题, 交代要写的规章制度; 分: 分别介绍规章制度, 应该做的和不应该做的事情; 总: 发表对规章制度的看法。
2024年春七年级英语下册Unit4Don’teatinclass单元分析教案新版人教新目标版
Unit 4 Don't eat inclassSection A本单元以“规章制度”为话题，用祈使句、情态动词can, must, have to谈论班规、校规及家规。
Section A部分通过教室外墙壁张贴校规的形式呈现书面语的规章制度，然后通过听、说、读、写来学习规章制度的表达方法。
Section B部分通过Molly Brown的苦恼，介绍有关“家规”的内容，并引导学生正视“家规、校规”，使他们相识到：Teachers and parents make rules to help us. We have to follow them.1．Don't eat in the classroom.2．We can't arrive late for class.3．We must be on time.4．—Can we wear a hat in class?—Yes, we can./No, we can't.5．We have to clean the classroom.6．We have to follow the rules.1．祈使句的否定句用法 (详见P 语法聚焦)2．情态动词can表示“许可”的用法及have to的句型结构。
Some school rules in America1．If someone bumps into you, say excuse me, even if it was not your fault.别人碰撞到你，不管你有没有错都要说“对不起”。
2．Be positive and enjoy life.要乐观，要享受人生。
3．Live so that you will never have regrets.别让将来有缺憾。
4．No matter the circumstances, always be honest.不管环境如何，肯定要诚恳。
Unit4Don’teatinclass知识点总结人教版七年级英语下册
Unit 4 Don’t eat in class知识点总结短语归纳1in class 在课堂上 2arrive in/at 到达 3arrive late for 迟到 4be late for 迟到 5(be) on time 准时 6in the hallways 在走廊上 7listen to 听 (8)at shool 在学校 9bring...to... 带...到 (10)have to 必须，不得不 11fight with sb 和某人打架 12go out 外出 13on school nights 在学校的晚上 14practice doing sth 练习做某事 15do the dishes 清洗餐具 16make breakfast 做早饭 17make one's bed 整理床铺 18read a book 看书 19be strict with sb 对某人要求严格 20be strict in sth 对某事要求严格 21follow the rules 遵守规则 22make rules to do sth 制定规则 23good luck 好运 24too many 太多+可复 25too much 太多+不可 26 much too 太…用法集萃 典句必背 1. Don’t arrive late for class. 上课不要迟到。
2. Can we bring music players to school? 我们可以带音乐播放器到学校吗？ 3. And we always have to wear the school uniform. 并且我们总是不得不穿校服。
4. There are too many rules! 有太多的规则！ 5. Don’t leave the dirty dishes in the kitchen! 不要把脏盘子留在厨房里！ 6. I have to keep my hair short. 我不得不留短发。
人教版七年级英语下册Unit 4 Don't eat in class教学设计
Unit 4 Don’t eat in class.Learning Objectives一、Topics（话题）:Rules二、Functions (功能)Talk about rules三、Structures (结构)1. Imperatives (Don’t)2. Can for permission3. Modal verbs have to, must四、Target Language (目标语言)Don’t eat in the classroom!We ca n’t arrive late for class.We must be on time.Can we wear a hat in class?Yes, we can./No, we can’t.We have to clean the classroom.We have to follow the rules.五、V ocabulary （词汇）rule, dish, night, luck, hair, arrive, listen, fight, wear, bring, practice, relax, read, feel, remember, follow, keep, learn, quiet, noisy, dirty, terrible, strictarrive late for class, be on time, listen to music, do the dishes, make your bed, be strict with …, follow the rules六、Skills (技能)Listening for key informationScanning in reading七、Recycling （复习巩固）go out, do your homework, watch TV, clean your room, help your mom make breakfast, in the evening, every Saturday八、教材分析这本教材的词汇量很大，有难度，但是，内容新颖，尤其是生动活泼的卡通化的画面，很符合七年级学生的年龄特点和心理特点，其中还囊括了丰富多彩的文化知识，以及合作探究的活动，十分贴近学生的实际生活经验。
人教版新目标英语七年级下册：Unit 4 《Don't eat in class》
Unit4 Don’t eat in class!附参考答案一．单项选择.1．____ late. It’s your first day to work.A. Don’t to beB. Don’t beC. Don’tD. No 2．－______sing! －All right.A. LetB. Let’sC. We let3．When will the train ______?A. arriveB. arrive atC. reachD. arrive in4．I ______ but I _______ nothing.A. listened ; heardB. listened; hearC. heard; heardD. heard; listened5．The girl ______ the red dress is Jill Green.A. withB. wearC. put onD. in6．－Do you have an eraser?－______. I have _______ eraser.A. No; notB. Not; noC. No; noD. Not; not7. Mary usually _____ her dog at weekend.A. walkB. takesC. go withD. walks8. Don’t ______ bed by 9 o’clock.A. goB. inC. be inD. go in9. We can’t go out _______ school nights.A. atB. inC. onD. by10. He can’t meet his friends tonight because he _______ do homework.A. has toB. needC. have toD. don’t have to11. It’s very warm. You ______ to wear the coat.A. mustB. d on’t have toC. have toD. mustn’t12. Don’t go into the classroom _______ the teacher.A. withB. togetherC. withoutD. with not13. He can’t _______, but he often _______ to the beach and play.A. swimming, goB. swim, goesC. swims, goesD.swim, go14. Does she always wear _______?A. uniformB. sneakerC. a uniformD. a sneaker15. There are ________ rules in our class.A. many tooB. too muchC. much tooD. too many16. Tom never ________ fun at home.A. have muchB. has anyC. have anyD. has many二．句型转换。
人教版英语七年级下册教案unit4 don't eat in class
3. Careful reading
1) Read Dr. Know's letter and answer the question:
What does she think of the school and home rules?
句型：①Don't eat in class.
②You must be on time.
③Eat in the dining hall.
课后反思
Unit 4 Don't eat in class
课题
Unit4
课型
新
教学目标
1.重点单词：outside，wear，important，bring，uniform，quiet
A．don't B．can't C．aren't D．are
(C)3.You ________ go in a hurry(匆忙)．There's enough time left.
A．have to B．hadn't
C．don'thave to D．haven't to
作业布置
请同学们做前面课时训练部分。
2) Ss read Dr Know's letter and find the answer to the question.
3) Let one student read out his/her answer.
(She thinks parents and schools are sometimes strict, but they make rules to help us. We have to follow them. )
初中英语 七年级下册 Unit4 Don't eat in class
(2)意为“一定；准是”，表示肯定推 测，用于肯定句中。 这本书一定是玛丽的。
The book must be Mary’s.
2.情态动词 have to 的用法 (1) have to 意为“必须；不得不”，后接动词 原形，表示客观需要做的事情。 现在我不得不离开。 I have to leave now.
不要吵闹。 Don’t be noisy.
肯定句：
让我帮你吧。
Let+宾语+动词原形+其他. Let me help you.
Let 型 否定句：
①Don’t let+宾语+动词原 形+其他. ②Let+宾语+not+动词原 形+其他.
别让他走。
Don’t let him go./
Let him not go.
2.祈使句的句式
肯定句：
请坐。
动词原形（+宾语）+其他. Sit down, please.
Do
型 否定句：
不要在这儿跑。
Don’t +动词原形（+宾语）
+其他.
Don’t run here.
肯定句： Be +表语+其他. Be 型 否定句： Don’t + be +表语+其他.
请安静。 Be quiet, please.
Summary
语法 1. 祈使句的三种类型用法
Don’t run in the hallway. 2. 情态动词can, must, have to的用法
Can we wear a hat in class? We must be on time for class. We have to be quiet in the library.
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单元语法小专题(Grammar Focus)
语法精讲
一、祈使句
1．定义
表示请求、命令、警告、建议等的句子叫祈使句。
在祈使句中，一般以动词原形开头，通常省略主语you，句末可以用感叹号或句号。
2．祈使句的句式结构
为了指明向谁提出请求或命令，加强语气或表示感情色彩，也可以将祈使句的主语表示出来，以起强调作用。
另外，祈使句的强调形式还可以在句首加do。
You be quiet！你给我安静一会儿！
Do come earlier next time！下次一定要早点来！
二、must与have to的用法
1．两者均可表示“必须”，must更强调说话者的主观意愿，而have to强调客观上的必要性，意为“不得不”。
I must go now，or I will be late.我必须现在就走，否则就迟到了。
It's too late.I have to take a taxi.太晚了，我不得不乘出租车。
2．must一般只表示现在，没有人称和数的变化，而have to则可以用于不同的时态，有人称及数的变化。
I/We/You/They must work hard.我/我们/你(们)/他们必须努力工作。
She has to wear a uniform at school.她必须在学校穿校服。
3．两者的否定式含义大不相同。
mustn't表示“不准；禁止”，而don't have to表示“不必”。
You mustn't swim in the river.你不准在河里游泳。
You don't have to get up early on weekends.周末你不必早起。
【注意】以must开头的一般疑问句，其肯定回答用must，否定回答用needn't或don't have to。
—Must I go with you？我必须跟你们走吗？
—Yes，you must./No，you needn't，/No，you don't have to.是的，你必须。
/不，你不必。
语法精练
Ⅰ.用括号内所给单词的适当形式填空。
1．Do(do) your homework right now(立刻)．
2．Please be(be) quiet.
3．Don't__let(not let) the dog come in.
4．No swimming(swim)!
5．They have to do(do) their homework when they get home.
Ⅱ.单项选择。
(D)6.________ take the books out of the library.
A．Not B．Can't
C．Doesn't D．Don't
(B)7.—________ dressed now！We have to go in ten minutes.
—OK，Mom.
A．Getting B．Get
C．To get D．Gets
(C)8.Students ________ wear school uniforms on weekdays.This is the rule of our school. A．can B．may
C．must D．will
(B)9.(绥化中考)—Mum，must I clean my room?
—No，you ________.
A．mustn't B．needn't
C．can't
(B)10.Annie's bike is broken(坏)，so she ________ walk to school.
A．have to B．has to
C．need to D．having to。