1、必修二 Unit 2 Lets celebrate (2) 高一年级 英语 Using language Modals (2) Grammar Learning Objectives At the end of the class, youll be able to: 1. summarize the basic usage of the modal verbs which indicate possibilities 2. use “can/could, may/might, must” to rewrite sentences in real conversation 3. use mod
2、al verbs indicating possibilities to describe people in a picture and give proper reasons when necessary Review the reading passage and answer the following questions. 1. Which book is a good choice for those who regard Christmas as a special time of year? 2. Whats the feeling of the children when t
3、hey received letters from North Pole? 3. What is the unusual part of the book? Review and answer 1. Which book is a good choice for those who regard Christmas as a special time of year? Letters from Father Christmas could be the perfect book for those who regard Christmas as a special time of year.
4、Review and answer 2. Whats the feeling of the children when they received letters from North Pole? The children must have been very excited as they opened it. Review and answer 3. What is the unusual part of the book? Interestingly, the letters didnt contain the usual warnings to children that they
5、might not receive their presents if they were not good. Review and answer Discovering Look at the following sentences first. a. That is why Letters from Father Christmas could be the perfect book for those who regard Christmas as a special time of year. b. The children must have been very excited as
6、 they opened it. c. they might not receive their presents if they were not good. Analyzing 1. What do the words in yellow indicate: an order, a request, ability or possibility? 2. Will the meaning of sentence (a) change if we replace “could” with “must” or “might”? 3. What happens if we change “must
7、” and “might” in sentences (b) and (c) into “could”? Analyzing 1. What do the words in yellow indicate: an order, a request, ability or possibility? The words in yellow indicate possibility. Analyzing 2. Will the meaning of sentence (a) change if we replace “could” with “must” or “might”? If we repl
8、ace “could” with “must”, the meaning of sentence (a) will change. It means the speaker is quite sure about the statement. If we replace “could” with “might, the meaning of sentence (a) will remain more or less the same. “Could” and “might” in affirmative sentences have a similar meaning when indicat
9、ing possibility. Analyzing 3. What happens if we change “must” and “might” in sentences (b) and (c) into “could”? If we change “must” in sentence (b) into “could”, it means the speaker is not sure about the statement, and its only a possibility. If we change “might” in sentence (c) into “could”, it
10、means its impossible for the children to receive their presents. Analyzing Read the passage again to find all the sentences containing modal verbs and figure out the meanings of these words. Analyzing 1. Who could it be from? 2. The letters were also beautifully illustratedeach must have taken its t
11、rue author, Tolkien, a long time to complete. 3. By expressing love for his children in such a special way, Tolkien may indeed have been the real Father Christmas. Summarizing Work in groups and summarize the usage of the modals “can/could, may/might, must”. Summarizing can+ 动词原形 1. 用于肯定句，表示客观可能性，意为
12、“可能”，即从理论上看是可能 的，但不一定会发生。 As a human being, anyone can make a mistake. 2. 用于否定句或疑问句，表示对现在的动作或状态进行主观的猜测，意为 “可能”，或表示惊异、怀疑等态度。 He cant have a lot of money. Summarizing may+ 动词原形 表示主观的推测，意为“或许”，用于肯定句和否定句均可。 a. He may be very busy now. b. He may not be at home. 表示可能性时，cant 语气较强，表示“不可能”； may not 语气较弱，表示“可
13、能不，或许不”。 Summarizing might+ 动词原形 表示推测，意为“可能”，可以指过去的情况，也可以指现在的情况，但 语气比may更加不肯定。用于肯定句和否定句均可。 a. They might have a lot of work to do now but Im not sure. b. She was afraid they might not like the idea. Summarizing could+ 动词原形 意为“可能”，可以指过去的情况，也可以指现在的情况，语气缓和。多 用于否定句或疑问句。 a. He looks young. He couldnt be
14、over 50. b. Could it be true? Summarizing must+ 动词原形 表示猜测，意为“准是，一定”，通常用于肯定句。 a. This must be your room. b. Look at his new car. He must have a lot of money. Summarizing must+ 完成式 表示对已发生情况的推测，通常用于肯定句。 She must have gone home. can+ 完成式 表示对已发生情况的推测，通常用于否定句或疑问句。 a. You cant have forgotten her. b. Where
15、can she have put it? Summarizing could+ 完成式 表示对过去情况的推测，多用于否定句或疑问句。 a. He could not have been more than 16 at that time. b. Could she have forgotten my address? may/might+ 完成式 表示对已发生事情的不肯定的推测，might比may语气更加不肯定。 He may/might have come by train. Practicing Rewrite the underlined sentences in the convers
16、ation in Ex. 2 on page 17 using can/could, may/might, and must. Practicing 1. I expect you are feeling tired now! You must be tired now! Practicing 2. Its possibly him. It may/might/could be him. 3. Im sure thats Lucy. That must be Lucy. Practicing 4. I dont think thats Lucy. That cant be Lucy. 5. M
17、aybe they are from our school. They may/might/could be from our school. Application Look at the picture in Ex.3 on page 17 and answer the question: What is the picture about? It shows a scene on Black Friday. Black Friday refers to the day after the US Thanksgiving holiday and is one of the busiest
18、shopping days of the year. Stores have big sales and open their doors very early. It is considered as the start of the holiday shopping season. Application Make sentences to describe the people in the picture with can/could, may/might, and must. Give proper reasons when necessary. Application The gi
19、rl with glasses may be very tired to get up so early and carry so many bags. The man with a wallet in his hand might be a bit reluctant to pay. The woman in red must be very excited to buy so many things because she wears a big smile on her face. The cashier might be feeling uncomfortable as he is s
20、weating. Application Write a short passage to describe the picture by organizing the sentences you made up and adding some background information, using modal verbs we learnt today. Checklist 1. Is the passage about a scene on Black Friday? 2. Are the descriptions about customers clear and accurate?
21、 3. Is the passage written according to the space order? 4. Are the modals properly used in the passage? 5. Are there any spelling mistakes? On Black Friday, stores have big sales and open their doors very early. At 9:05 am, the biggest store in our neighborhood is crowded with countless customers.
22、They must have got up very early. At the checkout, many people are queuing up in line. The woman in red must be very excited after buying so many things because she wears a big smile on her face. But the girl with glasses behind her may be very tired to get up so early and carry so many bags. The ma
23、n with wallet in his hands on the left also might be unhappy to pay so much money. He may not be a generous person. Behind the checkout, the cashier might be uncomfortable as he is sweating. More people will flood into the store and it must be very crowded until midnight. Checklist 1. Is the passage
24、 about a scene on Black Friday? 2. Are the descriptions about customers clear and accurate? 3. Is the passage written according to the space order? 4. Are the modals properly used in the passage? 5. Are there any spelling mistakes? On Black Friday, stores have big sales and open their doors very ear
25、ly. At 9:05 am, the biggest store in our neighborhood is crowded with countless customers. They must have got up very early. At the checkout, many people are queuing up in line. The woman in red must be very excited after buying so many things because she wears a big smile on her face. But the girl
26、with glasses behind her may be very tired to get up so early and carry so many bags. The man with wallet in his hands on the left also might be unhappy to pay so much money. He may not be a generous person. Behind the checkout, the cashier might be uncomfortable as he is sweating. More people will flood into the store and it must be very crowded until midnight. Homework Option 1. Summarize the usage of the modal verbs and tell the differences of these words. Option 2. Exchange your drafts about a scene on Black Friday and make improvements with each other according to the checklist.
