老师：Hello everyone, welcome to my class. Today we are going to learn Book 2. You need to, let's celebrate. In this class we are going to deal with using language, part of Unit 2. We will go on learning the usage of some model verbs. I hope and end of this class you will be able to 1st summarize the basic usage of the model verbs, which indicate possibilities. Second, use can or could, may or might, must to rewrite sentences in real conversation. Third is model verbs indicating possibilities to describe people in a picture and gave proper reasons when necessary.
老师：Before we start, let's review the reading passage and answer the following questions. Number one, which book is a good choice for those who regard Christmas and the special time of year. Number two, what's a feeling of the children when they received the letters from gospel? Number three, what is the unusual part of the book? Do you find the answers from the passage? Now let's check together. 1 which book is a good choice for those who regard Christmas and the special time of year? Letters from Father Christmas could be perfect book for those who regard Christmas and and special time of the year.
老师：Number two, what's the feeling of the children when they received letters from Nospel? The children must have been very excited as they opened it. 3. What is the unusual part of the book? Interestingly, the letters didn't contain the usual warnings to children that they might not receive their presents if they were not good. Have you got the crack dancers?
老师：Now let's look at the sentences from the reading passage a, that is why letters from Father Christmas could be the perfect book for those who regard Christmas and the special time of year.
老师：B, the children must have been very excited and they opened it. See, they might not receive their presents if they were not good. After reading the sentences, let's try to answer the questions listed here. 1 what do the words in yellow indicate? Another, 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 and might in sentences B and C into could? Now let's try to work it out together. 1 what do the words in yellow indicate? Another. A, request, ability, or possibility? The words in yellow indicate possibility. 2. Will the meaning of sentence a change if we replace could with must or might? If we replace 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.
老师：Could and might in affirmative sentences have a similar meaning when indicating possibility 3. What happens if we change must and might in
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