Unit 3 Could you please clean your room? Period 3 Grammar focus情态动词专练课件

课件19张PPT。Unit 3
Could you please clean your room?
Period 3
Grammar focus
情态动词专练学习目标：
1.情态动词的语法特点及用法
2.情态动词中考练习Dictation（听写）
1.我扔下书包进了客厅.（过去时态）
2.我一坐在电视机前，妈妈就过来了.
3.你一直看电视.
4.他惊讶地问.
5.我和你一样累.
6.他没有做家务，我也没做.下课后英语小组长把2、5、6、7、8号交上，其余的小组长阅出来，100分的同学个人加一分，小组加一分。sitcomRule(规则)：把3a改编成情景剧，进行表演的同学得到的分数，相应小组也得到相应分数。Grammar FocusCould 是什么词？你还知道哪些情态动词？1. Can you tell us your story, Tony ?
3. He might be at home.8. He had to look after his sister yesterday.7. Shall we go out for a walk?5. Need I finish this work today? Yes, you must. It’s a very important job.6. What should I do? You should lie down and rest.4. May I watch the show first? No, you can’t,
you must do the chores first.2. He said that they must work hard.情态动词有什么语法特征？有特殊的情态动词吗？情态动词的语法特征1) 情态动词不能单独做谓语, 必须与动词连用。 2) 大多数情态动词没有人称, 数的变化, 但有些情态动词, 如can、will, have to也有一般式和过去式的变化。have to 还有人称变化。只作情态动词的 can / could, may / might,
must /shall / should
可情态可实义的　 need
可情态可助动词的 will / would
相当于情态动词的 have to, used to1.【2013重庆】Hurry up，or you ____catch the train．
A．can’t B．needn’t C．mustn't D. shouldn’t
2.【2012江西】 Last year I ______ drive. I used to take the bus.
A. could B. couldn’t C. should D. shouldn’t
3.【2013江苏徐州】 —Can I borrow your ruler，please?
—Yes，you . But you must return it to me before lunchtime.
A.have B. can C. must D. used
4.【山东泰安 】 —Could you swim at the age of seven ?—Yes，I .
A.could B. can C. will D. may
5.【2012 呼和浩特】10. —____ I try on those shoes in the window?
—______. They are just on show.
A. Could; Yes, you can B. Can; Sorry, you couldn’t
C. Could; Sorry, you can’t D. Can; Yes, you could
6.【2013黑龙江绥化】 Whose T-shirt is this? It __ be John’s. It’s __ small for him.
A. can’t; much too B. can’t; too much C. mustn’t; too muchcan 和could：总结can与could 的用法和关系，每组1号同学主持讨论。can 和could： can的主要用法是：
A.? 表示能力： 这时could 是can的过去式, 表示与过 去有关的能力和推测，回答仍用could回答。
（can表示“能够”时与短语be able to同义，但can只用于一般现在时或过去时，而后者可用于各种时态。另外，can表示个人有某种能力，而be able to表示某人通过努力、克服困难做成某事）
?
B.? Can’t表示说话的推测”不可能”

C. 在口语中, can可以表示请求或允许:could可以代替can表示请求, 但语气较can客气、委婉，回答时不能用could回答，而要用can回答。1. 【2013浙江舟山】 Drivers _____ wear seat belts while their cars are running on the road. A. need B. can C. must D. may
2. 【2013 浙江衢州】Hurry，Mum! The bus is coming。----Wait a minute，dear. You cross the street until the traffic lights are green.
A. must B. need C. mustn’t D. needn’t
3.【2013四川遂宁】―Must I return the book this week?
― No, you ____. You can ____ it for 20 days.
A. mustn’t, keep B. needn’t, borrow C. needn’t, keep
4. 【2013河南】 Dad, must we wait until the light becomes green?
—Yes, I'm afraid we______ .That's the traffic rule.
A.can B. may C. have to D. need
5. 【2013四川南充】 Excuse me, whose book is this?
It ________ be John’s. It has his name on it.
A.must B. need C. can’t
6. 【201山东枣庄】 You_ _ wear sports shoes when you climb a mountain.
A. can’t B. shouldn’t C. mustn’t D. have to
must的用法：must 有几种用法？must与have to的区别。每组3号同学主持讨论。Must用法：
A.must表示必须,mustn’t表禁止做某事。Must的一般疑问句肯定回答用must回答，否定句用needn’t 或don’t have to回答。

B.? must表示说话的推测“肯定”

C.两词都是 “必须”的意思, have to 表示客观的需要, must 表示说话人主观上的看法, 既主观上的必要。have to 有人称、数、时态的变化,而must只有一种形式在否定结构中: don’t have to 表示 “不必”, mustn’t 表示“禁止”。
1.【2013 上海】—Must I go to medical school and be a doctor like you, dad? —No, you needn’t son.
You’re free to make your own decision.
2.【2012黑龙江】 Lisa is a little poor at Chinese. I think she needs practise speaking it every day.
3. 【2012四川自贡】 Need I finish the work today? Yes, you need .need的用法：是每组5号同学主持讨论。是真假need用法：
A.need表示需要,needn’t表不必做某事。need的一般疑问句肯定回答用must回答，否定句用needn’t 或don‘t have to回答。

?
B.? Need 还可以做实意动词，通常在肯定句中作实意动词，在一般疑问句和否定句中做情态动词。

1. 【2013福建泉州】 Have you decided where to go for your summer vacation?—Not yet.(还没有) We _______go to Qingdao . It's a good place for vacation. A. may B. need C. must
2. 【2013甘肃兰州】36. — Look at the boy playing basketball on the ground. Is it George? It ______ be him. He told me he would play basketball after class, but he’s not sure.
A. mustn’t B. must C. can’t D. may
3【2013河北】._ I see your ID card, sir? We have to check your information. A. May B. Must C. Should D. Need
4. 【2013山东潍坊】You mustn’t go off on your own, because you _____get lost in the mountains.
A. should B. must C. needD. mightmay 与might的用法：1.may 有几种用法？
2.May经常与什么人称连用?
3.may与might的关系。每组2号同学主持讨论。may和might用法：
A. 表示允许或请求，经常与第一人称连用; ?

B.?表示没有把握的推测;可能注意: might 表示推测时, 不表示时态，只是可能性比may小。
C. may放在句首, 表示祝愿。
May God bless you!
will与should的用法：【2012.山东菏泽】－Excuse me, can you tell me the way to the People’s Park?
Walk along this road and turn right, and the park is on your right. You____ miss it.
A. needn’t B. mustn’t C. may not D. won’t 【2013山西】 A country has dreams. We teenagers ____ also have dreams. With dreams and hard work, anything amazing can be created. A.may B. must C. should
4. what ___the life be like in 100 years?
Awill B coud C would D can【2013安徽】3 You ____ drive your car so fast. It’s very dangerous.A. wouldn’t B. shouldn’t C. couldn’t D.mightn’t【2013湖北武汉】—Honey, stay home before I return. —I _______, mum.
A. must B. can C. will D. should Homework:
1.建立情态动词知识结构图(可采用表格，图片等形式)
2.中考情态动词专练The end of this period!