Unit 3 It must belong to Carla.,Section A Period Three 4a-4d,Teaching aims,1.单词：laboratory=lab；coat；sleepy; pocket 2.学会使用must be, could be ; might be, cant 做出推测。 3.学会辨别must / must be; could/ could be; might / might be的用法,Revision,Dictation 1.过去常做某事 2. 非常少 3.不寻常的事情; 4. 被采访 5. 准是；一定 6.任何奇怪的事情 7. 隔壁邻居 8. 不可能是9. 看见某人跑开 10. 感到不安 11.做某事取乐 12. 制造恐惧,Revision,Dictation 1.used to do 2. nothing much 3.something unusual; 4. be interviewed by 5. must be 6.anything strange 7. next door neighbor 8. cant be 9. see sb running away; 10. feel uneasy 11.have fun doing sth 12. create fear,重点语法知识用法小结,1、whose用来对物主代词及名词所有格进行提问： 1）提问形容词性的物主代词。 如：These are my bananas. Whose bananas are these? 2）提问名词性的物主代词。 如： That bedroom is mine. Whose is that bedroom? Hers are in the classroom. Whose are in the classroom? 3）提问名词所有格（不包括of构成的所有格）。 如：Those are the twins bags. Whose bags are those? Toms mother is a good teacher. Whose mother is a good teacher,2、must; might; cant; could 等词的用法,1）must “必须” -Must I clean the classroom now? 我必须现在打扫教室吗？ No, you neednt. (注意：否定用neednt作答) 2）must 表推测 “必定、一定、肯定” It must be Lucys schoolbag because her ID card is in it. It must belong to Carla. 3) mustnt “不允许：绝对不可” You mustnt smoke here. You may look at it , but you mustnt touch it. 4）注意：含有must be 的句子，在改为否定句时，要用cant be 而不是mustnt be It must be Toms. It cant be Toms.,4) may ,might 的用法 （1）表示“允许” 意为“可以”，例如： You may leave now. （2）表推测，意为“可能，或许” 例如： Your pen may /might be in your schoolbag. 你的钢笔可能在你的书包里。 （3）might 是may 的过去式，语气更加委婉、客气。 Might I use your pen for a while? 我可以用会儿你的钢笔吗？,5）could（can的过去式） 能，会; 可能 He could not ride a bike two years ago. Could you help me?(在此could语气更加委婉） It could be a bear or a wolf. 6) cant 不能； 不可能（表可能性） The boy cant answer the question. The man in the room cant be Tom, because Tom has gone to Shanghai.,4a. Choose the best way to complete each sentence using the words in brackets,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 / could be / should be). 4. A: I wonder if these 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.,might be,must be,could be,cant be,must be,4b.Complete these responses.,1. A: Many people are wearing coats. B: The weather must be _. 2. A: Sally has been coughing a lot. B: She might be _. 3. A: Theres very loud music coming from the apartment next door. B: The neighbors must be_. 4. A: Whenever I try to read this book, I feel sleepy. B：It_.,very cold outdoors.,catch a bad cold.,have a party,could be boring.,4c.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 it might be a boys room because the clothes look like boys clothes.,当堂训练,1.Is that our new English teacher？ Well, it_ be, but Im not quite sure. A. should B. might C. must D. cant 2. Whose bike is this? It _ belong to Adam. Look! His bag is on it. A. can B. may C. will D. must 3.How is your friend coming? -Im not sure. He _ drive here. A. may B. can C. must D. will,B,D,A,当堂训练,4.Whos the man there? Is it Mr Black? - It _ be him. Hes much taller. A. cant B. mustnt C. should D. may 5.-_ we clean the classroom at once? - No, you _. You_ clean it after school. A. Must; neednt ; may B. Must; mustnt can C. shall; cant must D. Need; mustnt; may,B,A,