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1、Section A (Grammar Focus-4c)Period FourTo learn how to use must, might, could and cant for making inferences It must be Carlas.It could be Meis hair band.Im not sure, but it cant be a dog.laboratoryoutdoorscoatsleepyn. 实验室实验室adv. 在户外；在野外在户外；在野外n. 外套；上衣外套；上衣adj. 困倦的；瞌睡的困倦的；瞌睡的Words ReviewlabWhose vol
2、leyball is this?It must be Carlas. She loves volleyball.Whose hair band is this?It could be Meis hair band. Or it might belong to Linda. They both have long hair. What did you see that night? Im not sure, but it cant be a dog. It wasbigger. I think it might be a bear or a wolf. 这是谁的排球？这是谁的排球？_ _is t
3、his?一定是卡洛的，她喜欢打排球。一定是卡洛的，她喜欢打排球。It _ _Carlas. She loves volleyball.这是谁的发带？这是谁的发带？Whose _ _is this?可能是可能是May的。或者可能是属于的。或者可能是属于Linda的。的。他们都留长发。他们都留长发。It _ _Meis hair band. Or it _ _Linda. They both have long hair. Whose volleyballmust behair bandcould bebelong tomight那天晚上你看见了什么？那天晚上你看见了什么？What did you
4、 see_ _? 我不太确定，但肯定不是一只狗。它比较大。我不太确定，但肯定不是一只狗。它比较大。我想可能是一只熊或者狼。我想可能是一只熊或者狼。Im_ _, but it _ _a dog. It was bigger. I think it _ a bear or a wolf. that nightnot suremight becant be【观观察察领领悟悟】仔仔细观细观察例句察例句, 体会情体会情态动词态动词的具体含的具体含义义。1. The e-dictionary must be Nancys. She is the only one who has an e-dictiona
5、ry in our class. 2. The man must be waiting for the bus at the bus station. 情态动词表示推测情态动词表示推测【观观察察领领悟悟】3. The watch could belong to Mike. I know he has one like this. 4. The novel might be Lindas. She likes reading novels. 5. The black backpack cant belong to Ruth. Hers is red. 情态动词表示推测情态动词表示推测情情态动词态
6、动词的基本概念。的基本概念。情情态态动动词词表表示示说说话话者者的的语语气气和和情情态态, 无无人人称称和和数数的的变变化化; 本本身身虽虽有有一一定定的的意意义义, 但但不不能能独独立立作作谓谓语语, 后后接接动动词词原原形形, 一一起起构构成成谓谓语语。常常用用来来表表示示说说话话人人对对有有关关行行为为或或事事物物的的态态度度和和看看法法, 认认为为其其可可能能、应应该该或或必必要要等等; 或或用用来来表表示示推推测测或判断。或判断。知识构建情情态动词态动词must, may, can, could, might等用来表示推等用来表示推测测和判断。具体用法如下：和判断。具体用法如下：1.
7、must：意：意为为“一定；准是一定；准是”。表示表示说说话话人人对对事物的推事物的推测测的把握性非常大。的把握性非常大。 They are wearing school uniforms, they must be students.知识构建表示推表示推测测的情的情态动词态动词 “must be+现现在分在分词词”意意为为“一定正在一定正在”，表示表示对说话对说话的的时时刻推断另一刻推断另一个个动动作正在作正在发发生或生或进进行。行。eg: She must be cooking now because I can smell something delicious.表示推表示推测测的情的情
8、态动词态动词知识构建 “must have +过过去分去分词词”意意为为“一定一定”，表示表示对过对过去情况的肯定的推去情况的肯定的推测测。eg :I cant find my keys .I must have left them at home.表示推表示推测测的情的情态动词态动词知识构建2. can: can表示推表示推测时测时，常用于否定句、疑，常用于否定句、疑问问句中，句中，cant意意为为“不可能；不可能；应该应该不是不是”。常用句型常用句型为为：“can/cant be +表表语语”意意为为“（不）可能（不）可能”，表示表示对现对现在情况的否定在情况的否定推推测测。eg: Tha
9、t cant be Maria, because shes in hospital.Theres someone outside. Who can it be?表示推表示推测测的情的情态动词态动词知识构建3. could/might/may:如果表示如果表示对对所推所推测测事情没有很大的把握，用事情没有很大的把握，用could或或might或或may。它。它们们常用于肯定句或疑常用于肯定句或疑问问句中，意句中，意为为“也也许许；可能；可能”。eg: He might be doing his homework now. Could the news be true?表示推表示推测测的情的情态动
10、词态动词知识构建1.Excuse me, whose book is this?Itbe Johns. It has his name on it.A. mustB. needC. cant单项选择。单项选择。强化训练2.The man _ be my English teacher. He has gone to Canada. A. mightB. mustC. cant3. Martinget here in time, but I am not sure. A. must B. might C. can D. should强化训练1. A: Wheres Jean？ B: Im not
11、 sure. She _ (is/might be/ must be) in the laboratory. might be4a Choose the best way to complete each sentence using the words in brackets. laboratory=lab2.A: Everyone is going to the pool after school. B: Really? It _ (must be/cant be/ could be) hot outdoors.must be4a Choose the best way to comple
12、te each sentence using the words in brackets.adv.3.A: Thats the phone. B: Hmm. I wonder who it_ (must be/could be/ should be).could be4a Choose the best way to complete each sentence using the words in brackets.wonder=want to know4. A: I wonder if these are Jims glasses. B: They _(cant be/ might be/
13、 could be) his. He doesnt wear glasses. cant be4a Choose the best way to complete each sentence using the words in brackets.是否是否5. A: I hear water running in the bathroom. B: It _(could be/ must be/ cant be) Carla. She was thinking of taking a shower. must be4a Choose the best way to complete each s
14、entence using the words in brackets. hear sb. doing sth.听见某人正在做某事听见某人正在做某事1. A: Many people are wearing coats. B: The weather must be _.2. A: Sally has been coughing a lot. B: She might be_.3. A: This restaurant is always very crowded. B: The food_.4. A: Whenever I try to read this book, I feel slee
15、py. B: It cant _. very coldhaving a coldmust be deliciousbe interesting4b Complete these responses. 4c. Look at this picture of a room. How much can you tell about the person who lives here? Is it a boy or a girl? What are his/her hobbies? Discuss your ideas with a partner.A: It could be a girls roo
16、m because its very tidy. B: I guess so. But it might be a boys room because the clothes look like boys clothes. 一、单项选择一、单项选择1.Listen! Helen is singing in the next room.- It _ be Helen. She has gone to Guangzhou. A. would B. cant C. could D. might 2. There were a large number of people _garbage(垃圾垃圾). A. collect B. collecting C. collected D. was collectingThere be sb. (sth.) doing sth. 有人（其他东西）正在做某事。有人（其他东西）正在做某事。3. Im really _ because of my test. A. anxious B. agree C. wonderful D. comfortable
