unit8 it must belong to carla grammar.ppt

1、进贤县赵埠中学陶志承,Unit 8 It must belong to Carla,Section A Grammar Focus-4c,laboratory outdoors coat sleepy,n. 实验室 adv. 在户外；在野外 n. 外套；上衣 adj. 困倦的；瞌睡的,It could be _. It also might be _.,Can you guess what it is?,three birds,a beautiful face,Can you guess what it is? It could be _. It also might be _.,a whit

2、e vase,two faces,It could be _. It also might be _.,Can you guess what it is?,a dog,two girls,Could A be bigger than B? In fact, A and B must be _.,Which one is bigger, A or B?,A,B,the same size,No.,Grammar Focus,Grammar: 情态动词表推测,可能性: must can/could may/ might,can not ( cant) could not (couldnt),may

3、 not / might not,否定,否定,表示推测的情态动词有must, may, could, might, can。 must表示说话人对事物的推测可能性的程度非常大，意为“一定；准是”；表示有把握的否定推测时用cant，意为“不可能”。如： 1. I cant find my keys. I must have left them at home. 2. - Is she Mary? - That cant be her. Shes in hospital., can表示“可能”，常用于否定句、疑问句中。could为can的过去式，表示推测的语气较can弱。如： - Can the

4、man there be our math teacher? - He may be, but I am not sure. may意为“也许”。might为may的过去式，表示说话人对现在或将来不太确定的可能性的推测。如： Li Ming might get here in time, but I am not sure.,表示推测的情态动词 在英语中，表示对某件事物的确定程度，即表示推测的时候，我们通常会用到以下情态动词: must, might, could, may, cant, couldnt。,一. can和could的区别和用法 1. can表示体力和脑力方面的能力, 或根据客观

5、条件能做某种动作的“能力”。 Can you speak English？ can用在否定句和疑问句中时有时表示说话人的 “猜测”或 “不肯定”。 Can the news be true？ (在日常会话中, can可代替may表示“允许”, may比较正式),2. could 是 can的过去式, 表示过去有过的能力和可能性, 还有怀疑和不肯定的意思(在否定和疑问句中)。 She couldnt skate when she was five years old. （能力） At that time we thought the story could be true. （可能性） coul

6、d用来提问, 是有礼貌的请求 Could. Please? 语气较为婉转。 Could I speak to Mr. Smith, please?,二. might和may的区别和用法: 1. may的用法: a. 表示”允许”或”请求”。 May I come in？ 在使用这一用法时需注意: may表示“允许”的否定形式是must not, 意思是“不应该、不许可”。 May I take this book out of the reading room? No, you mustnt.,b. 表示说话人的猜测，认为某一事情“或许”或“可能”发生。 He may know the ans

7、wer. c. may用在感叹句中可表示祝愿、愿望。 May you succeed. 祝你成功。 May you have a pleasant journey. 一路平安。,2. might的用法: a. might可以代替may, 表示现在时间的动作，但语气较为婉转客气或更加不肯定。 Might I offer a suggestion？ b. might用来表示现在时间时, 还可表示”规劝”。 You might pay more attention to spoken English.,三. must与have to的区别 have to比较强调客观需要, must着重说明主观看法，

8、另外have to能用于更多时态。比较下面的句子： My brother was seriously ill, so I had to call the doctor in the middle of the night. (客观上需要做这件事) He said that they must work hard. （主观上要做这件事）,有时两者都可以用, 意思差别不大。 We must / have to leave now. must在表示说话人对事物的推测时，它比may肯定得多, 相当于汉语的“一定”或“准是”。(只有在肯定句中能这样用。) This must be your room.,

9、在回答由must引起的问题时, 如果是否定的答复，不能用mustnt, 而需要用neednt或dont have to, 因为mustnt是“一定不要”的意思，表示禁止。 - Must I hand in my homework now? - No, you neednt.,情态动词表示推测可以分为以下几种情况: 情态动词+ do此结构表示对现在或将来情况的推测和判断 Do you know where she is now? I think she might travel in Beijing. 情态动词+ be doing此结构表示对现在或将来正在进行的情况的推测和判断。 At this

10、 moment, my father cant be working in the office.,本课关键内容,情态动词+ have done此结构表示对过去情况的推测和判断。 The road is wet. It must have rained last night. 情态动词+ have been doing此结构表示对过去正在进行的情况的推测和判断。 Your mother must have been looking for you at that moment.,根据句意, 从方框中选择正确的情态动词填空, 每项限用一次。 should, must, cant, may not

11、, mustnt 1. That _ be Lucy. She has gone to Beijing on business. 2. There _ be something wrong with my watch. It isnt working now.,cant,must,3. He _ know the answer, either. Lets ask that policeman. 4. You _ swim in the river. Its dangerous. 5. You _ look after your parents when they become older. I

12、ts your duty.,may not,mustnt,should,用must, might, could或cant 填空 The toy car _ be Jims. He is the only kid at the picnic. 2. This Mp5 _ be Lindas. I know she has one. 3. The mobile phone _ belong to Lucy or Lily. They both have mobile phones. 4. The man _ be Mr Smith. He has gone to Shanghai and hell

13、 be back in three days.,must,could / might,could / might,cant,laboratory outdoors coat sleepy,n. 实验室 adv. 在户外；在野外 n. 外套；上衣 adj. 困倦的；瞌睡的,4a Choose the best way to complete each sentence using the words in brackets. The keys:,might be,could be,could be,can be,could be,4a,Choose the best way to complet

14、e each sentence using the words in brackets.,1. A: Wheres Jean? B: Im not sure. She _ (is/ might be/ must be) in the laboratory.,might be,n. 实验室,2. A: Everyone is going to the pool after school. B: Really? It _ (must be / cant be /could be ) hot outdoors.,must be,表示“位移”的动词用现在进行时态表将来，例如：go去，come来，lea

15、ve离开，arrive到达，return 回来，fly 飞。,e.g. I am coming.=I will come. He is leaving for Paris.=He will leave for Paris.,adv. 在户外，在野外,3. A: Thats the phone. B: Hmm. I wonder who it _ (must be / could be / should be).,could be,4. A: I wonder if these are Jims glasses. B: They _ (cant be / might be / could be)

16、 his. He doesnt wear glasses.,cant be,wonder v. “想知道” (want to know) No wonder+句子，“难怪.” e.g. No wonder you are angry. 难怪你觉得生气。,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.,could be/ must be,think of 想要；打算 e.g. I though

17、t of playing basketball. 我想打篮球。,1. A: Many people are wearing coats. B: The weather must be _ _. 2. A: Sally has been coughing a lot. B: She might be _.,getting colder/ cold outside,having a sore throat/ ill,4b,Complete these responses.,n. 外套,3. A: This restaurant is always very crowded. B: The food

18、 _. 4. A: Whenever I try to read this book, I feel sleepy. B: It cant _.,must be delicious,be interesting,adj. 困的,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.,4c,Homework,1.

19、熟记新单词 2. 大册子P54语法专练和中考聚焦 3.预习英语书P59 的3a,完成大册子 P50的快乐预习。,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 crowded. B: The food _. 4. A: Whenever I try to read this book, I feel sleepy. B: It cant _.,4b

20、Complete these responses.,might be,could be,could be,could be,Look at the two rooms below. Make guesses about the owner of each room.,【浙江湖州】 Whos singing in the next room? It _ be her. She has gone to New York. A. cant B. must C. shouldnt D. can 【解析】考查情态动词表推测。表示否定推测时，用cant，意为“一定不”。must表示推测时，意为“一定”，用

21、于肯定句；根据答语“她已经去了纽约”可知是否定推测，故选A。,中考链接,【2011湖北黄冈】41. Whose T-shirt is this? It _ be John s. Its _ small for him. A. cant; much too B. cant; too much C. mustnt; much too D. mustnt; too much 【解析】情态动词的用法。根据句意“它不可能是约翰的，对他来说太小了。”故排除C、D，too much为“太多”的意思，much too为“太”。故选A。,【2013天津】 Where are you going this mon

22、th? We_ go to Xiamen, but were not sure. A. neednt B. must C. might D. mustnt 【解析】 neednt (不必)表建议； must (一定)表猜测的可能性很大； might (可能，也许)表不是很肯定的猜测。 mustnt(不允许)表命令。句意：-这个月你们将去哪？-我们或许去厦门，但还不确定。,C,【2013福建泉州】- Have you decided where to go for your summer vacation? - Not yet. We _ go to Qingdao. Its a good pl

23、ace for vacation. A. may B. need C. must 【解析】句意：- 你已经决定到哪里过暑假了吗？- 还没有呢，我们也许去青岛，那是个度假的好地方。情态动词表示推测时，may表“可能”，must表“一定”，cant表“不可能”。,A,【2014铜仁】 Must I water the flowers now, mum? No, you _. You _ do it later. A. mustnt; must B. mustnt; may C. neednt; may D. neednt; must 【2014连云港】 _ I know by what time

24、you want the project to be done? By the day after tomorrow. _ you finish it on time? A. May; Can B. Must; Need C. Could; Must D. Need; Would,C,A,【2014长沙】Whos singing in the garden? It _ be Mr. Brown. He always practices singing at this time. A. must B. cant C. need 【2014河北】I _ follow you. Would you

25、please repeat it? A. cant B. mustnt C. neednt D. shouldnt,A,A,1. A: Wheres Jean? B: Im not sure. She _ (is / might be / must be) in the laboratory. 2. A: Everyone is going to the pool after school. B: Really? It _ (must be / cant be / could be) hot outdoors.,Choose the best way to complete each sent

26、ence using the words in the brackets.,4a,might be,must be,3. A: Thats the phone. B: Hmm. I wonder who it _ (must be / could be / should be). 4. A: I wonder if these are Jims glasses. B: They _ (cant be / might be / could be) his. He doesnt wear glasses. 5. A: I hear water running in the bathroom. B:

27、 It _ (could be / must be / cant be) Carla. She was thinking of taking a shower.,could be,cant be,must be,Complete these responses,1. A: Many people are wearing coats. B: The weather must be_ . 2. A: Sally has been coughing a lot. B: She might be_ . A: This restaurant is always crowed. B: The food _

28、 . A: Whenever I try to read this book, I feel sleepy. B: It cant _.,4b,be interesting,cold,ill,must be delicious,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

29、a girls room because its very tidy. B: I guess so. But it might be a boys room because the clothes look like boys clothes.,4c,1. Excuse me. Is this the right way to the Summer Palace? Sorry, I am not sure. It _ be. A. might B. will C. must D. can,Choose the correct answer.,2. Isnt that Anns husband over there? No, it _ be him Im sure he doesnt wear glasses. A. cant B. must not C. wont D. may not,3. You _ be tired youve only been working for an hour. A.