初中英语牛津版 (深圳&广州)七年级下册（2012秋审查）Unit 6 Electricity课文内容ppt课件

这是一份初中英语牛津版 (深圳&广州)七年级下册（2012秋审查）Unit 6 Electricity课文内容ppt课件，文件包含Unit6ElectricityPeriod3Grammar课件pptx、Unit6ElectricityPeriod3Grammar教案doc、Unit6ElectricityPeriod3Grammar学案doc、Unit6ElectricityPeriod3Grammar练习doc、情态动词歌曲mp4等5份课件配套教学资源，其中PPT共27页， 欢迎下载使用。

Watch the vide and talk abut it.
Frm the vide, we can knw what we are ging t learn tday?情态动词（Mdal verbs）是本身有一定的词义，表示语气的单词。但是不能独立作谓语，只能和动词原形一起构成谓语。情态动词用在行为动词前，表示说话人对这一动作或状态的看法或主观设想。 情态动词虽然数量不多，但用途广泛，主要有下列： can (culd), may (might), must, need, ught t, dare (dared), shall (shuld), will (wuld)
Mdal verbs: can and cannt
Presentatin
We use the mdal 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.
Hi and L are talking abut themselves. What are they saying? Read their cnversatin and then cmplete the statements belw with can r cannt.
I can swim, dance, play ftball and speak tw languages. I can’t ck, play the guitar r ride a bicycle.
I can fly, dance, play chess and speak ten languages. I can’t paint r drive a car.
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.
can can’t can’t can can’t can cancan’t
Can 和 cannt的用法can是一个情态动词，表示“能，可以”的意思，用法也非常的简单，只要直接把句子的主语放在“can”的前面就可以了，比如：I can swim.  我会游泳。He can skate. 他会滑冰。We can sing English sngs. 我们会唱英文歌。 
Can 和 cannt的用法相反，表示“不能„„”也非常的简单，只要在“can”的后面加上 “nt”就可以了，当然“cannt”是全称，它还可缩写成“can’t” ，如： I can’t sing. 我不会唱。He can’t skate. 他不会滑冰。 We can’t sing English sngs. 我们不会唱英文歌。
Let’s play a game!
The first student say : “I can … Can yu d that?” Then, the next student answer : “Yes, I can./N, I can.t” And ask the third student “I can … Can yu d that?” In this mdel, every student play this game in turn.
Mdal verbs: may and may nt
We use may and may nt t ask fr and give permissin. In less frmal situatins, sme peple like t 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.
Daisy is nt feeling well tday. Benny it at hme with her. Read their cnversatin belw. Fill in the blanks with may r can.
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: 　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.
may 和 may nt的用法在请求对方的许可， 或是准许你做某事时， 常用情态动词may 和can. may 比较正式，can 较常用且更口语化一些。 如：  May I leave wrk early tday?我今天可以早点下班吗？ Yes, yu may.你可以。N, yu may nt.你不可以。
may 和 may nt的用法may/may nt和can/cannt 有时也可以通用：Yu may/can use my dictinary.你可以用我的词典。Yu may nt/cannt use my cmputer.你不可以用我的电脑。
根据语境填上may或may nt。
1　That _______ r _______ be true.2　He _______ have (= perhaps he has) missed his train.3　_______ I cme in?4　The cnverse f this statement _______ (不一定) be true. 5　The deal with Chelsea _______, hwever, be dead.
may may nt mayMay may nt may nt
We use must and must nt/mustn’t t tell peple what t d r what nt t d.
Yu must nt/mustn’t d that, Benny!We must always be careful with electricity.They must nt/mustn’t play near the heater.
Mdal verbs: must and must nt
Daisy saw a dctr. The dctr tld her what t d and what nt t d. Help her write dwn the dctr’s instructins.
Drink mre waterg t bed earlyEat cld fdshare cups with thersG ut alnetake the medicine n time
1　_____________________________________________________2　_____________________________________________________3　_____________________________________________________4　 I must nt ___________________________________________5　_____________________________________________________6　_____________________________________________________
I must drink mre water.I must g t bed early.I must nt eat cld fd.share cups with thers.I must nt g ur alne.I must take the medicine n time.
must 和 must nt的用法must 用以表示“必须做某事” 或“一定要做某事”，具有强制性，表达一种责任或义务或表示很有必要做某事；或在提出建议时使用，意为“应该；得”。如:    We must bey the schl rules.      The windws are very dirty. I must clean them.     We must g t the bank tday. We haven’t gt any mney. 
must 和 must nt的用法must 的否定形式是mustn’t, 表示“禁止”， “决不允许”，具有强制性。 如:I must hurry, I mustn’t be late.    Yu mustn’t frget t phne Julia.     
must 和 must nt的用法 must 用于一般疑问句中，其肯定和否定回答应引起我们的注意。  Must I g nw?我们现在一定要走吗？ Yes, we must. 是的，我们一定要走。N, we mustn’t. 不， 我们不可以走。  Must I finish reading the bk this week? Yes, yu must.N, yu needn’t.
Chse the crrect answers.
(  ) 1. Everyne ________ g thrugh the security check(安检) when entering  the Wrld Exp Park.       A. canB. mayC. mustD. ught  (  ) 2. — Must I g t the shp with yu, Mum? — Err… I can make it myself, Mike. Yu ______ g with me. A. mustn’t B. shuldn’tC. wuldn’t D. needn’t   (  ) 3. — Must I finish my hmewrk right nw? — N, yu ___.       A. needn’t     B. may nt    C. mustn’t      D. can’t 
Let’s play a rle!
A: May I help yu?B: Yes, yu may. please.A: Can I carry yur bx?B: Yes, yu can. Thank yu!
A: May I speak t Wang Wang?B: Yes, yu may.A: Must we call a texi?B: Yes, we must. It’s t far.
1. We can jump 200 times in ne minute.（改为否定句）  ________________________________________________________2. He must clean all the dishes by himself.（改为一般疑问句并做肯定和否定回答） ________________________________________________________________________________________________________________________________________________________________________
We can’t jump 200 times in ne minute.       Must he clean all the dishes by himself?           Yes, he must. N, he needn’t. / N, he desn’t have t.
Key pints: 学习can/cannt的特点及用法；学习may/may nt的特点和用法。学习must/must nt的特点和用法。