2014年人教版九年级英语Unit-8-Grammar-Focus.ppt

1、Unit 8,Section A Grammar Focus,Review,Translate the phrases.,outside the window have fun next-door neighbor at first run away feel uneasy have no idea have fun (in) doing sth.,在窗外 玩得高兴 隔壁邻居 最初； 首先 逃跑 心神不安 一点不知道； 没办法 做某事很愉快,- Whose volleyball is this? - It must be Carlas. She loves volleyball. - Whos

2、e book is this? - It must be Marys. J.K. Rowling is her favorite writer. - Whose hair band is this? - It could be Meis.,Read the sentences below, paying attention to the colored parts.,- Whose notebook is this? - It must be Mings. It has her name on it. - Whose French book is this? - It could be Car

3、ols. She studies French. - Whose guitar is this? - It might belong to Alice. She plays the guitar. - Whose T-shirt is this? - It cant be Johns. It is too small for him.,Read more sentences.,must,cant,could might,100% probably true,20%-80% possibly true,0 almost not true,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

4、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

5、couldnt skate when she was five years old. （能力） At that time we thought the story could be true. （可能性） could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

6、 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 answer. 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,

7、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，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 mus

8、t / 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.,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

9、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 moment, my father cant be working in the office.,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

10、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, 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

11、. You _ swim in the river. Its dangerous. 5. You _ look after your parents when they become older. Its 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 Lu

12、cy or Lily. They both have mobile phones. 4. The man _ be Mr Smith. He has gone to Shanghai and hell be back in three days.,must,could / might,could / might,cant,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,A: Many

13、 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 Complete these responses.,might be,could be,could be,could be,L

14、ook 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 - shi

15、rt 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 month? We_ go to Xiamen, but were not sure. A. neednt B. must C.

16、 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 place for vacation. A. may B. need C. must 【解析】句意：- 你已经决定到哪里过暑假

17、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 you want the project to be done? By the day after tomorrow. _ you finish it on time? A. May;