九年级8单元第3课时

1、Unit 8 It must belong to Carla. Section A 1 (1a-2d) Section A 3 (Grammar Focus-4c) 一、教学目标： 1. 语言知识目标： 1) 学习掌握下列词汇：laboratory, coat, sleepy, pocket 2）进行一步复习巩固学习Section A 部分所学的生词和词组。 3）掌握情态动词的用法和物体所属的句型。 2. 情感态度价值观目标： 面对身边暂时不可解释的现象，根据已有证据进行合理推测。不信谣，不传谣。 二、教学重难点 1. 教学重点： 1) 复习巩固Section A 部分所学的生词和词组，达到熟

2、练运用的目标。 2) 总结情态动词的用法。 2. 教学难点： 1) 学习运用情态动词的用法。 2) 掌握物体所属的句型。 三、教学过程 . Revision Review some main phrases and sentences we learned in the last class. . Grammar Focus Fill in the blanks. 1. 这是谁的排球? _ _ is this? 这一定是卡拉的。她热爱排球运动。 It _ be _. She loves volleyball. 2. 这是谁的发带？ _ _ is this? 它可能是梅的发带。或者可能属于琳达。

3、她们两人都是长头发。 It _ be Meis hair band. Or it _ belong to Linda. They_ have long hair. 3. 那晚你看见了什么？ _ did you see that night? 我不确定，但肯定不可能是狗。它更大。我想也许是一头熊或一匹狼。 Im _ _, but it _ _a dog. It was bigger. I think it _ _ a bear or a wolf. . Try to Find 情态动词表推测，可能性：must can/could may/might 一、must 表示可能性最大的肯定推测，意思是

4、“一定、准是”。只能用于肯定句。如果要表示“一定不”，应该用cant。如果询问可能性时，应该用can。 e.g. He must know the answers. 他肯定知道答案。 He cant know the answers. 他肯定不知道答案 Can he know the answer? 他知道答案吗？ 二、can/could can表示推测“可能性”时，一般用于否定句或疑问句。can在疑问句中意思是“会，可能”。 e.g. He cant pick her schoolbag up. 他不可能拿了她的书包。 could 用于表示某事有可能发生或可能是事实。 e.g. Dont e

5、at it. It could go bad. 不要吃它，可能坏了。 The plane could be put off by the storm. 这趟飞机可能会因为暴风雨而推迟。 could可用于表示客气、礼貌、委婉的请求语气。 Could you please help me with my homework？你能帮我完成我的家庭作业吗？ 三、may/might may, might表示推测“可能性”时，意思是“可能”，“也许”。might不表示过去时态，语气更委婉，可能性更小。may, might表推测时，可用于否定句，但不用于疑问句。 e.g. He may/ might not

6、be at home, but Im not sure. 他可能不在家，不过我也不确定。 四、推测时态 1. must: 推测现在/ 正在/ 过去发生的动作。 e.g. He must have a car now. (现在) 他一定有一辆小汽车。 He must be finishing his homework at home. (正在进行) 他一定在家做作业。 He must have finished the work. (过去) 他一定已完成了工作。 2. can can/ cant 后可接进行时/完成时，表示对现在发生的动作或过去发生的动作进行推测。 e.g. They cant

7、be reading in the library. 他们一定不在图书馆读书。 He cant have gone to Shanghai because I saw him just now. 他不可能去了上海，我刚看见他了。 3. may/ might may，might 可以推测现在正在发生的动作或过去发生的动作，还可以推测将来的情况。 e.g. He may/might be sleeping now. (现在) 他可能正在睡觉。 These people may/might have seen the film before. (过去) 这些人以前可能看过这部电影。 It may r

8、ain. There are some clouds. (将来) 可能会下雨。因为有一些乌云。 . Exercises Choose the correct answer. 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 2. Isnt that Anns husband over there? No, it _ be himIm sure he doesnt wear glasses. A. cant

9、 B. must not C. wont D. may not 3. You _ be tiredyouve only been working for an hour. A. must not B. wont C. cant D. may not 4. Is John coming by train? He should, but he _ not. He likes driving his car. A. must B. can C. need D. may . Practice Work on4a. Choose the best way to complete each sentenc

10、e using the words in brackets. 1. 让学生们理解句子意思。 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. 3. A: Thats the phone. B: Hmm. I wonder who it _ (must be /

11、 could be / should be). 4. A: I wonder if there 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: It _ (could be / must be / cant be) Carla. She was thinking of taking a shower. 2. 根据句意选择正确的情态动词。 3. 最后，通读一遍句子，进行综合理

12、解，看句子内容是否通顺，合理。 4. Check the answers with the Ss. Keys: might be, must be, could be, cant be, must be 5. Explanation. (1) be sure (of/about sth/doing) 确信.，对.有把握 be sure to do sth “ 必定” ，“ 必然会”, 准会 (2) 表示“位移”的动词用现在进行时态表将来，例如：go去，come来，leave离开，arrive到达，return 回来，fly 飞。 (3) wonder v. “想知道”（want to know

13、） No wonder + 句子 “难怪.” e.g. No wonder you are angry. 难怪你觉得生气。 (4) think of 想要；打算 e.g. I thought of playing basketball. 我想打篮球。 Work on 4b. Complete these responses. 1. Tell Ss to understand the sentences. 1. A: Many people are wearing coats. B: The weather must be _. 2. A: Sally has been coughing a l

14、ot. 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 sleepy. B: It cant _. 2. Let Ss write down possible answers as much as possible. 3. Let Ss check their answers with their partners. 4. Check the answers together. Keys:

15、cold, sick/ ill, must be delicious, be interesting/ attractive . Group Work 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 room because its very tidy. B：I guess so. But