人教版（2024）七年级下册（2024）Unit 2 No Rules, No Order课前预习课件ppt

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学生能够熟练运用祈使句和情态动词介绍规则，并在班级活动中积极参与“绘制规则标识”游戏。（迁移创新）
学生能够通过观察和分析示例句子，深入理解并准确辨析祈使句和情态动词的表意功能。（学习理解）
学生能够掌握并运用祈使句和情态动词表达规则，同时能够关注表示命令时的委婉的语气。（应用实践）
Lk at the signs and talk abut them in different ways.
Dn’ t use yur phne in class.
Dn’ t litter.
Dn’ t run in the hallways.
Dn’ t talk in class.
Be quiet in class.
N phne calls.
N littering.
what kind f interesting sentences did yu ntice in the vide?
Watch and say
Dn’t be late!
Just g t bed!
It must be mistake!
We have t mve its paw.
I can’t ck.
Sme f them sund s strng and tell us what t d right away, and sme let us knw what we're gd at r what we have t d
Lk and think
Imperative Sentences
祈使句一般用来表示命令、请求、劝说、号召、警告、禁止等。
通常省略主语yu其肯定形式常以动词原形开头，否定形式是在动词原形前加dn’t。祈使句句尾用句号或感叹号。
Turn back!G t bed nw!
Be quiet, please!Be careful!
Let’s g!Let’s have a rest!
Let型：Let sb d+其他
Dn’t be late!Dn’t smke here!Dn’t let him leave!
Dn’t型Dn’t be+其他Dn’t d+其他Dn’t let+其他
N phts!N smking!
N型N+n.N+v.ing
祈使句一般用来表示请求、命令、劝说、号召、警告等。在祈使句中，通常省略主语yu，其肯定形式以动词原形开头，否定形式是在动词原形前加dn’t。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。
can, must, have t
情态动词用于表达说话人的态度、意愿、推测、建议、能力、义务等。
没有人称和数的变化；后面必须跟动词原形来构成完整的谓语。
can可表示能力、许可、请求等。其否定形式为can’t/ cannt.
eg. I can speak a little Frech. 我会说一点法语。（能力） We can’t run in the hallways.我们不能在走廊上奔跑。（许可） Can yu help me? 你能帮助我吗？（请求）
must表示必须。常表示说话人的主观看法，其否定形式为mustn’t.
eg. Must I finish my hmewrk befre eight ’clck ?
Yes, yu must.
N, yu mustn’t.
N, yu needn’t.
N, yu dn’t have t.
mustn’t 表示禁止：不许
have t表示不得不。常强调客观需要。其否定形式为dn’t have t。
1. 肯定句：主语+_____________+___________.2. 否定句：主语+ _______________ have t+__________.3. 一般疑问句：__________+ 主语+ have t+__________? Yes, 主语+_________./N, 主语+____________.
dn’t/desn’t
Must & Have t
二者均可表示“必须”，其后均接动词原形。但是，have t 表示客观条件要求某人不得不做某事 must 表示某人主观意愿上必须或者有义务要做某事
He has t live at schl because his hme is far away frm schl.
We must d smething t prtect the earth.
我们必须做点什么来保护地球。
他家离学校太远了，他不得不住校。
1．—Can yu speak English, Ling ling?—Yes, I ________.A．mustB．canC．shuldD．may2．Lucy is gd at basketball. She ________ play basketball very well.A．canB．can’tC．mayD．need3．－Mary, _________ yu speak Chinese?－Yes, nly a little.A．mustB．canC．needD．shuld4．Cme and ________ us!A．jinB．jinsC．jiningD．t jin
Cmplete the sentences using can, have t / must, r can’t / mustn’t.
1. Dn’t jump the queue. Yu wait yur turn.2. I feed my dg many kinds f fd, but I give him chclate. It is bad fr him!3. A: Can I leave the classrm if I dn’t feel well? B: Yes, but yu tell yur teacher abut it when yu be absent frm class.4. A: Hey! Can I lk at yur bk? B: Shh, we talk quietly in the library.5. A: Can yu put n yur seat belt? We wear ne when we’re in a car. B: Sure. Thanks!
have t / must
have t/must
have t/must
插队=jump/ cut in line
Lk at the first sign and read the rules. Then write the rules fr the ther signs.
D nt eat r drink.N eating r drinking.Yu can’t / mustn’t eat r drink.
D nt park here.N parking.Yu can’t / mustn’t park here.
D nt take phts here.N phts.Yu can’t / mustn’t take phts.
D nt swim here.N swimming.Yu can’t / mustn’t swim here.
D nt feed birds.N feeding.Yu can’t / mustn’t feed birds.
In grups, brainstrm three rules fr ne f the places belw. Then draw signs t shw the rules. Share yur signs in class and explain what they mean.
In the library , we must keep quiet. We mustn’t make nise. We can’t...
library schl dining hall park cinema hspital
Rule - maker
Preparatins： 1. Several cards with different scenaris written n them (such as library, schl dining hall, park, cinema, hspital etc.). 2.Drawing tls, such as drawing paper, clred pens, etc. 3.A blackbard r a large screen fr display. 4.Divide the students int several grups, with 3 t 5 peple in each grup. 5.Each grup sends a representative t draw a scene card t determine the scene where they need t make rules.
Rules： 1. Grup members use imperative sentences and mdal verbs (such as must, mustn't, can, can't, etc.) t make three rules. Fr example, if “park” is drawn, the rules culd be: Yu mustn't pick the flwers. 2. Each grup draws crrespnding signs accrding t the rules made. Fr example, fr the rule "Yu mustn't smke", yu can draw like this:
3. Each grup sends a representative t display the drawn signs n the large screen and explain t the whle class the meanings f these signs and the crrespnding rules.
准备： 1.若干张写有不同场景（如公园、电影院、医院等）的卡片。 2.绘画工具，如画纸、彩笔等。 3.准备展示用的黑板或大屏幕。 4.将学生分成若干小组，每组 3 - 5 人。 5.每组派代表抽取一张场景卡片，确定他们需要制定规则的场景。
规则： 1.小组成员讨论并使用祈使句和情态动词（如 must, mustn't, can, can't 等）来制定三条规则。例如，如果抽到 “公园”，规则可能是： Yu mustn't pick the flwers.（你不许摘花。） 2.每组根据制定的规则画出相应的标识。例如，对于 “不许抽烟” 可以画一支烟加上一个禁止符号。 3.每组派一名代表将画好的标识展示在黑板或大屏幕上，并向全班同学解释这些标识的含义和对应的规则。
Can I leave the classrm if I dn’t feel well? (P13 3b)
Language pints
leave v. 离开；把留下
【翻译】1. The plane leaves fr China at 12 I dn’t want t leave hmtwn.3. We are ging t leave ur city fr Shenzhen.4. I left my keys n the bus.
leave sp.leave fr sp.leave A fr Bleave sb./ sth.
飞机于上午12点前往中国。
我们将要离开我们的城市去深圳。
我把钥匙忘在公交车上了。
I can feed my dg many kinds f fd,... (P13 3b)
feed v. 喂养；饲养
【辨析】feed & raise
feed...(食物)t...(动物)feed...(人或动物)with...(食物)feed n...
以为食，靠为生（主语多为动物或婴儿）
主要强调“喂养”“给（人）”提供食物，侧重具体喂食动作。
当意思为“养育；抚养”时，侧重整体培育成长的过程。
Can yu feed the cat, please?
They raised three children.
... when yu have t be absent frm class. (P13 3b)
absent adj. 缺席的；不在的
【解析】反义词为 present“出席的，在场的”。
be absent frm 缺席
eg. I was absent frm the meeting. 我缺席了这次会议。
【拓展】absence adj. 缺席
eg. I dn’t knw his absence tday. 我不知道他今天缺席。
一、根据句意及提示写出所缺单词或短语
1. She is (absence) frm tday’s cnference.2. Dn’t stay up t late! Because yu will leave Lndn early next mrning.3. It’s an imprtant meeting. (nt be) late.4. Let’s (say) smething abut it.
1．— Must we sing a sng at the party?— N, yu ________.A．mustn’tB．haven’t tC．nt have tD．dn’t have t2．It’s snwing. Please ________ warm clthes.A．wearB．wearsC．wearingD．t wear3．________ in bed. It’s bad fr yur eyes.A．Nt t readB．Dn’t t readC．Dn’t readD．Nt read4．It’s 7:15. Let’s ________ t schl.A．t gB．gingC．gD.gne
常规作业：1. 完成练习册第三课时； 2. 总结本节课所学到的祈使句和情态动词。拓展作业：选择一个自己熟悉的场景，如家庭、学校走廊等，用祈使句和情态动词制定规则，并画成标识。