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ts 教學(xué)重點(diǎn) Learn to make inferences using “must”, “might”, “could” and “can’t”. Teaching Procedures and ways 教學(xué)過程與方式 Step I Revision and Leadin Ask the students to do a game guessing the owners of things. T: In the last unit, we have learnt what we should do if we are in an imaginary situation. If we had problems, we would ask for advice or help. Now, imagine, if you have found something and don’t know who the owner is, what would you do Ss: We would try to guess who the owner is, then give it to him/her. T: Now, boys and girls, close your eyes. Collect some books from the students and put them together, asking the students to guess whose books they are. T: OK, open your eyes, please. Hold up one of the books. T: Whose book is this? S1: Bill’s ? T: It might be Bill’s. Let’s ask him. Bill, is this your book? S2: No, it’s not mine. T: Well, it isn’t Bill’s. He says it’s not his. S2: Is it Anna’s? T: Let’s ask her. Anna, is this your book? S3: No, it isn’t. T: So it’s not Anna’s book. And it can’t be Maria’s. Because I didn’t take hers. Then whose book is it? S1: Is it Lee’s? T: Yes, it doesn’t belong to Bill, Anna or Maria. So it must be Lee’s. Step II Brainstorming (1a: P 34) T: When we talk about things we are not sure of, we use the words could, might, can’t and must. It could be