初中Unit 6 Electricity备课ppt课件

这是一份初中Unit 6 Electricity备课ppt课件，共31页。PPT课件主要包含了课堂导入，课堂活动，课堂小结，课堂练习等内容，欢迎下载使用。
Yes, she can. She can draw.
Can she draw?
Lk and say! (using “can”)
N, they can't.They can sing.
Can they draw?
N, she can’t.She can dance.
Can she swim?
Lk and say! (using “may”)
Yes, yu may.N, yu can't.
May I watch TV?
A man is ging t see his bss. He is standing at the drway.
May I cme in?
A student is ging t ask the teacher a questin.
May I ask yu a questin?
A by is thirsty. He is asking his mther fr smething.
May I have sme water?
What are the rules?Well, we can’t sleep in class. We must study hard.
Lk and say! (using “must”)
What are the rules?Well, we mustn’t run the red traffic lights, we must bey the rules.
What d these signs mean?
（Yu mustn’t smke here.）
（Yu mustn’t climb this ladder.）
（Yu mustn’t swim here.）
（Yu mustn’t use yur mbile phne here.）
A can and cannt
We use the mdel verbs can and cannt (can't) t say we are able r unable t d smething.
We can use electricity t d many things. We cannt/ can’t see electricity. Can yu think f an example? Yes, I can./N, I cannt/ can't.
can ① be able t “能”，表示能力 I can/am able t sing an English sng.我可以唱一首英语歌曲。②表示许可或请求对方允许，意为“可以” Can I use yur dictinary? 我可以用你的字典吗？③ 过去式：culd 我十年前就能做到那样. I culd d that 10 years ag.④否定式： cannt = can’t
⑤culd 是can 的过去式，但表示请求许可时，culd 和can 不表示时态的区别，只是culd 的语气更加委婉，用culd 提出的请求要用can来回答。
Peter can speak English.否定→ Peter can’t/cannt speak English.一般疑问句→Can Peter speak English? (一般疑问句，提前情态动词)特殊疑问句→What can Peter speak?
Hi and L are talking abut themselves. What are they saying? Read their cnversatin and then cmplete the statements belw with can r cannt.
1. Hi _____ play ftball.2. L _____ paint.3. Hi _____ speak as many languages as L.4. Bth Hi and L _____ dance.5. L _____ drive a car, but he _____ play chess.6. Hi ____ swim, but he _____ play the guitar.
B may and may nt
We use may and may nt t ask fr and give permissin . We als use can and cannt (can‘t) fr the same purpse.
May/Can I use yur mbile phne？Yes, yu may/can. N, yu may nt/can't.
Yu may/can turn n the TV.Yu may nt/cannt play in the kitchen.
may ①表示允许may 表示许可或请求对方允许，意为“可以”，相当于can。两者的区别在于：表示请求许可时，may更能表示礼貌或敬意。 — May I watch TV nw, grandma? — N, yu may nt.
②否定式： may nt意为“不可以”。③may构成的一般疑问句及其回答形式如下： — May I — (肯定回答) Yes, yu may / can.— (否定回答) N, yu may nt / can’t /mustn’t. (注：mustn’t 的语气最强，表示禁止)
Benny: Hw are yu feeling, Daisy?Daisy: Nt very well.Benny: _________ I get yu a chair?Daisy: Yes, thanks.Benny: I’m ging ut. _____ I brrw yur bicycle, Daisy?
Daisy is nt feeling well tday. Benny is at hme with her. Read their cnversatin belw. Fill in the blanks with may r can.
Daisy: Yes, yu may. Befre yu g t meet yur friends, can yu cme and see the dctr with me?Benny: Yes. I ____. ______ I carry yur bag fr yu?Daisy: Yes, that’s very kind f yu, Benny. I’m ready t g.____ yu pen the dr fr me?Benny: Yes, I can.Daisy: Thanks.
C must and must nt
We use must and must nt (mustn't) t tell peple what t d r what nt t d.
情态动词must的用法
must ①表示规定、命令、强制，意为“必须；一定”。如：Yu must d yur hmewrk first. 你必须先做作业。 Yu mustn’t smke here. 你不许在这里吸烟。②must 的否定式为must nt / mustn’t，意为“禁止；不准”③must 构成的一般疑问句及其回答形式如下：— Must I — (肯定回答) Yes, yu must.— (否定回答) N, yu needn’t.
④辨析must和have t
I must drink mre water.____________________________________________________________I must nt _________________________________________________________________________________
I must g t bed early.
I must take the medicine n time.
eat cld fd.
I must nt g ut alne.
I must nt share cups with thers.
Daisy saw a dctr. The dctr tld her what t d and what nt t d. Help her write dwn the dctr’s instructins.
1.We have learned hw t use the mdal verb can, may and must.
情态动词后接动词______，没有人称和数的变化， _____单独作谓语，要与后面的______共同作谓语。其否定形式是在其后面直接加______ 。情态动词can 的用法：表示能力。构成一般疑问句时，需把can 移到______（句首/中）。肯定回答为“Yes,主语+ ______”；否定回答为“N,主语+____________”
can’t / cannt
情态动词may 的用法：表示允许。may在表达这个意思时可以与can 互换使用。由may 引起的一般疑问句，其否定回答用_______， ___________ 或 ________ 。表示请求时，culd 和can 不表示时态的区别，只是culd的语气更加委婉。情态动词must 的用法：表示必须/一定。其否定形式mustn’t 表示______。由must引起的一般疑问句，其否定回答要用______ 。
一、用本单元所学的情态动词填空。1. — Kate, yu have wn the English cmpetitin!— Oh, it _______ be true. I made a lt f mistakes in it.2. Yu ________ talk t yur grandparents like that. It’s implite.3. We _______ wash ur hands befre meals. It is gd fr ur health.
4. Excuse me, ____ yu tell me the way t the nearest park?5. Yu ________ g with us t the z if yu want t.6. I ____ speak Chinese very well, but I ____ speak French at all.
二、翻译下列句子。1. 门锁了。他不可能在家。The dr is lcked. He _____ be at hme.2. 我的手表停了，肯定有毛病。My watch desn’t wrk. There _____ be smething wrng with it.3. — 我可以借用你的尺子吗？— 当然可以。但是你必须明天还给我。— ____ I brrw yur ruler?— Of curse. But yu _____ return it t me tmrrw.
三、选择最佳答案填空。( )1. If yu feel tired, yu ____ sit n this chair and have a rest.A. mustB. canC. needD. can’t( )2. — ____ I watch TV nw, Mum? I finished my hmewrk. — Yes, yu ____. A. Must, need B. May, can C. Need, need D. May, must
( )3. He ____ see the wrds n the blackbard because he sits far away.A. mustn’t B. may nt C. can’tD. needn’t( )4. — ____ I d all the husewrk nw? — N, yu ____. Yu can d it later. A. Must, mustn’t B. Must, can’t C. Must, may nt D. Must, needn’t