Unit 5 It must belong to Carla.

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1 Unit 5 It must belong to Carla.

2 单元教材分析 知识目标 本单元学习情态动词表推测的用法。教材涉及了某物可能归属于某人和某人可能正在做某事这样两个情境。
本单元侧重复习名词所有格,人称代词; 拓展的是现在分词的用法; 通过谚语感受英美国家的文化; 渗透任务型阅读的答题技巧和根据上下文猜测词意的主要方法.

3 Unit 10 Can you play the guitar?（七上ability）
Unit 5 Can you come to my party? (八上invitation) Unit 11 Could you please clean your room? (八上，polite request, permission) Unit 1 Will people have robots? (八下，prediction） Unit 2 What should I do?（八下，advice） Unit 7 Would you mind turning down the music? (八下，requests） Unit 3 Teenagers should be allowed to…(九上，rules） Unit 4 What would you do? (九上，imaginary situation）

4 教学目标 1. Use “must, might, could and can’t” for making inferences.
Language goals: 1. Use “must, might, could and can’t” for making inferences. 2. Make reasonable inferences according to the given information. Target language: 1.Whose English book is this? It must be Carla’s. It has her name on it. . 2.Whose volleyball is this ?It could /might be Alice’s. She loves volleyball. 3.Whose pen is this ?It might belong to Helen. It’s under her chair. 4.Whose T-shirt is this ?It can’t be John’s. It’s too much small for him.

5 能力目标 a. 学生能用情态动词并根据相关信息对物品所属、正在发生的事进行推测。 b. 学生能听懂录音并做简单的记录。

6 德育目标 通过开展对物品的推论，培养学生的逻辑思维能力和推断能力。

7 教学重难点 重点：学生能用情态动词并根据相关信息对物品所属进行推测。 能听懂录音并做简单的记录。
难点：正确区别运用belong to 和名词所有格表示所属关系。

8 课时分配 Period 1 Section A could / might / must / can’t belong to sb. / be sb.’s Period 2 Section B could / might / can’t be doing 、reading Period 3 Self-check proverb Period 4 Grammar pronoun、 substantive genitive and modal verbs

9 Unit 5 It must belong to Carla. Section A

10 What does he / she do? He could/might be _______.

11 What does he / she do? He could/might be _______.

12 She can’t be ____________.
What does he / she do? a doctor She can’t be ____________. She ______be __________. a teacher must

13 备选活动一

14 A game 奇思妙想！ 只有做不到，没有想不到！

15 Guessing game Can you guess what it is? It could be ___________. It also might be a dog two girls

16 a girl some birds and trees. It could/might be _________.
It also might be ______________________. some birds and trees.

17 It could be _________________. It also might be ______________.
Can you guess what it is? It could be _________________. It also might be ______________. a white vase two faces It couldt be __________________________ . a lake, two people and some trees a baby It also might be ________.

18 备选活动二

19 表示推测的情态动词 　 在英语中，表示对某件事物的确定程度，即表示推测的时候，我们通常会用到以下情态动词：must, might, could, may, can’t, couldn’t.

20 must can’t could might 100% probably true 20%-80% possibly true
almost not true

21 C 否定句中用can’t, 表示“不可能”。 B She ___ be ill because her face looks pale.
must 表示推测时，只用于肯定句中，表示“一定、肯定”。 否定句中用can’t, 表示“不可能”。 B She ___ be ill because her face looks pale. A. can B. must C. need D. mustn’t ----Who is the man over there? Is it Mr. Li? ----No, it ____ be him, Mr. Li is much taller. A .mustn’t B. may not C. can’t D. needn’t C

22 can’t might must can’t Could
Fill in the blanks with must, might, could or can’t. （学案） 1. The man over there _______ be Mr. Wang. He has gone to Australia. 2. This basketball ______ be Li Lei’s or Lin Tao’s. They both like playing basketball. 3. The guitar ______ belong to Sam. He is the only student who plays the guitar. 4. The blue bike ____ be mine. Mine is black. 5. ______ you help me please? The box is too heavy. can’t might must can’t Could

23 Whose hair band is it? hair band 发带 It _____ be Jim’s. can’t
Because he is a boy. It _____ be Lily’ s. Because girls like hair bands. can’t must hair band 发带 Lily Jim

24 -Whose hair band is this?
-It ___________belong to Lily or Lucy. They both have long hair. might/could Lily Lucy

25 -It_______ belong to Bush. his bike is white and blue.
-Whose red bicycle is this ? can’t -It_______ belong to Bush. Because________________________ his bike is white and blue.

26 B: It must be...’s. Because…
A: Whose …is this? B: It must be...’s. Because… =It must belong to … Because… 属于 hair band

27 C: It might/ could belong to... D: It must belong to... Pairwork
李娜 A: Whose… is this? B: It can’t be…’s. C: It might/ could belong to... D: It must belong to... Pairwork

28 The … must be…’s, because… . The … must belong to… , because… .
Conclusion: The … must be…’s, because… . The … must belong to… , because… . 1b Listen and match each person with a thing and a reason. Person Thing Reason Jane’s little brother Mary Carla Deng Wen Grace volleyball toy car magazine book CD Hemingway is her favorite author. She loves volleyball. He was the only little kid at the picnic. She always listens to classical music. He loves cats.

29 belong to sb 和 be someone’s
区别：belong to中的to是介词，后面需要接名词或代词的宾格形式； be someone’s 中有be动词，根据意思需要后面要接名词的所有格形式或名词性物主代词。 e.g. This English book belongs to Tom. This English book is Tom’s (English book). This English book belongs to me. mine This English book is　　　　.

30 代词(选用)： 主格 / 宾格 形容词性物主代词 / 名词性物主代词 review I you he she it we they Me
Him her It Us Them 形物代 My Your His Her Its Our Their 名物代 mine yours his Hers its ours Yours theirs

31 It / They must might / could be……one’s.
Or: It / They must / might / could belong to……sb. It must belong to Mike. It must be Mike’s. The book might belong to her. The book might be hers. The keys can’t belong to my mother. The keys can’t be my mother’s. The clothes could belong to the twin brothers. The clothes could be the twin brothers’.

32 Practice （学案） 1 这个玩具车一定属于Tom. 这个玩具车一定是Tom的。
2 这个篮球 可能 属于 他。 这个篮球 可能是他的。 3 这个书包不可能属于她。 这个书包不可能是她的。 Practice （学案） The toy car must belong to Tom. The toy car must be Tom’s. The basketball could/might belong to him. The basketball could/might be his. The backpack can’t belong to her. The backpack can’t be hers.

33 2b Listening 1. The person go to our school. 2. The person be a boy.
3. It be Mei’s hair band. 4. The hair band belong to Linda. 5. It be Linda’s backpack. must can’t could might must

34 2b Listen again and complete the chart.
（学案） a backpack a school T-shirt The person must _________________ a __________ Mei’s She has _____________ Linda’s She was ________________ Rita’s She’s always ________________ a tennis ball ______ She’s _________________ go to our school. long hair. at the picnic. hair band forgetting things. Linda’s on the tennis team.

35 2c Fill in the blanks with the words from the unit
2c Fill in the blanks with the words from the unit. Then tell your partner why you choose the words. must/might/could The notebook be Ming’s. It was on her desk. The homework be Carol’s. She wasn’t at school today. The soccer ball be John’s or Tony’s. They both play soccer, don’t they? The French book be Li Ying’s. She’s the only one who’s studying French. can’t might/could must

36 I can’t find my backpack. It be still at school.
The photo be Lu’s. Those are his parents. The red bicycle be Hu’s. She has a blue bicycle. This ticket be my aunt’s or uncle’s. They’re both going to the concert. must/might must can’t might/could

37 T: What is the girl doing?
3a: Look at the photo and guess what she is doing. T: What is the girl doing? S: Maybe she is writing an . She might/must be writing an .

38 3a Read and number. 5→2→4→3→1 Try to answer the questions with your book closed. 1) What’s the matter with Linda? 2) Why does she need it? 3) What did she do to deal with her problem? 4)When was it dropped? And where might it be?

39 1) What’s the matter with Linda?
2) Why does she need it? 3) What did she do to deal with her problem? 4) When was it dropped? And where might it be? She can’t find her backpack. Because she will have a math test tomorrow and it makes up 30% of the final exam. She asked Anna to help her. She dropped it during the concert so it might still be in the symphony hall.

40 Fill in the blanks with the phrases:
1. I think I dropped my ticket during the concert in the ________________. 2. My eyesight is poor and I’ve made an ___________________________. 3. It’s _________ for everyone to have enough sleep before big exams. 4. Mother felt ________ about the children who had been gone an hour too long. symphony hall optometrist appointment crucial anxious symphony hall; crucial; Optometrist appointment ; anxious

41 consolidation ( )1. The books belong to ____. A. my B. me C. I D. mine ( )2. --Whose T-shirt is this? --It ___ be John's. It's too small for him. A. must B. might C. can't D. could ( ) 3. The computer must be ______.It has their names. A. Lily’s and Lucy’s B. Lily and Lucy’s C. Lily’s and Lucy D. Lily and Lucys’

42 Unit 5 It must belong to Carla. Section B

43 Revision must could might 1. 这本书一定是李雷的。他正在找这本书。
（学案） 1. 这本书一定是李雷的。他正在找这本书。 This book _____be Li Lei’s. He is looking for it. must 2. 这个发带可能是韩梅的。她喜欢戴发带。 The hair band ______be Han Mei’s. She likes wearing a hair band. could might

44 might could can’t 3. 这个玩具熊可能是约翰的妹妹的。 她还是个小姑娘。
The toy bear ________belong to John’s sister. She is a little girl. might could 4. 这个排球不是玛丽的。她根本不喜欢排球。 The volleyball ______be Mary’s. She doesn’t like playing volleyball at all. can’t

45 Guess what Mrs. Pig is doing ?
A: What is Mrs. Pig doing right now? B: I guess she might/could/must/ be riding a bicycle

46 Guess what Mrs. Pig is doing ?
A: What is Mrs. Pig doing right now? B: I guess she might/could/must/ ___________. be dancing

47 What do you think the girl is doing?
I think she might be watching a scary film. She might be doing her homework. It can’t be that. She must be eating.

48 对正在进行的动作表猜测must/might/could/can’t be doing…
Guessing Game What do you think … is V+ing? It might be V+ing … It can’t be that. It must be V+ing ….

49 What do you think … is V+ing?
It might be V+ing … It can’t be V+ing … It must be V+ing ….

50 What do you think … is V+ing?
It might be V+ing … It can’t be V+ing … It must be V+ing ….

51 Look at this man. He is running. Can you guess what happens
Look at this man. He is running. Can you guess what happens? Make up a conversation with your partner. A: Hey! Look at the man running down the street. I want to know what ’s happening? B: He could be running for exercise. A: But he is wearing a suit. He might be running to catch a bus. B: …

52 Look at the pictures. Then use the words from the box to write a sentence about each picture.
land man UFO alien chase a.______________________________________ b.______________________________________ c.______________________________________ The UFO is landing. The alien is chasing the man. The man is running.

53 Task Two Listen and complete the sentences They see… The man says…
The woman says… 1. a man running. He could be _______________ He might be ______________ 2. something in the sky. It could be _______________ It must be ______________ 3. a strange creature. It must be _______________ I must be ______________ 4. a woman with a camera. She could be _______________ They must be ______________ running for exercise late for work a helicopter a UFO an alien dreaming from the TV news making a movie

54 Tape Scripts

55 An Example to end the story:
The man thinks that the alien must be very dangerous and he might lose his life if the alien catches him. So the man is running as fast as he could. Finally the alien catches the man, and he just wants to make friends with the man. The man is very glad. And they become good friends.

56 Prediction Before reading, look at the picture and answer questions.
3a Reading 1. What can you see in the picture？ 2. What can we know about the woman? I can see a woman looking out of the window. She might be a little frightened（受惊吓的）and confused（迷惑的）. .

57 Skimming 3a:Read and answer ：
A: Why is everyone in Bell Tower neighborhood unhappy? B: Because strange things are happening in the neighborhood.

58 Scanning Finish the chart. Who? What did --- find/hear?
What did --- think it was? Zhou Gu’s wife Zhou Gu and his friends the police Qi Hui strange noises outside their window could be an animal strange noises outside their window must be teenagers having fun nothing strange might be the wind might be a dog noises outside

59 Intensive reading 1.Read the passage carefully and loudly.
2.Discuss and underline the important and difficult points with your partner .

60 1. neighborhood, neighbor
The important points. 1. neighborhood, neighbor Zhou Gu’s next door neighbor Qi Hui is unhappy too. We have many good ________ in our ____________. (neighborhood, neighbor) neighbors neighborhood 2. There be sb./sth. doing sth. There must be something visiting the homes in our neighborhood. 1). 有很多学生在参观博物馆。 There are many students ________ the museum. 2). 一定有人在等你。 There ______ ______ someone ________ for you. visiting must be waiting

61 3.现在分词作定语： I think it must be teenagers having fun.
I think it must be teenagers who are having fun. There must be something visiting the homes in our neighborhood. There must be something that is visiting the homes in our neighborhood. 操场上有些学生正在踢球。 There are a few students on the playground. playing football

62 4.try to do 表示“竭尽全力去做……”, 强调付出了一定的努力,如:
I tried to look for my lost pen, but I failed. 我尽力去找我丢失的钢笔，但我没找到。 与try doing的区别: try doing 表示 “尝试/企图做……” , 强调只是试一试, 不一定付出了努力, 如: I tried chatting with him. Luckily, he was on line! 我试着和他聊聊, 结果太幸运了: 他竟然在线上!

63 表示提醒或告戒别人 “小心……; 提 防……”, 如:
5.be careful of 表示提醒或告戒别人 “小心……; 提 防……”, 如: Be careful of the dog. It is dangerous. 相关词组: take care of 表示 “照看……; 照顾……” 如： Please help me take care of my little dog tomorrow.

64 7.use up 6.escape from 表示“用光，耗尽”,如： 表示 “从……逃离”, 如: 不要让他逃出这栋楼。
Don’t let the man escape from this building. 7.use up 表示“用光，耗尽”,如： 他用完了墨水。 He used up all the ink.

65 Our neighborhood _______be very_____.
Fill in the blanks, according to the article: Our neighborhood _______be very_____. However, these days , _______things are happening in our _____________ and everyone is_________. Zhou Gu, the _____ ______ ______is extremely worried. When he was ___________by the local newspaper, he said, “Every night we hear strange noises ______our window. My wife thinks that it quiet used to strange neighborhood local unhappy school teacher interviewed outside

66 could be an_______, but my friends and I think it must be teenagers______ _____. My parents called the______, but they can’t find________ ________. They think it might be the______. I don’t think so!” animal having fun police anything strange wind Zhou’s _____ ______neighbor Qi Hui is ________too. “At first, I thought it _______be a dog, but I can’t see a dog and I still ____ the noises outside.” next door unhappy might hear

67 is Everyone in our neighborhood _____ worried, and everyone ____his or her own ideas. There must be something _______the homes in our neighborhood, but what is it? has visiting

68 Retell the story: A local school teacher called Zhou Gu heard strange noises outside his window every night. His wife thinks that it could be an animal. His friends and he think it must be teenagers having fun. The police think it might be the wind. His neighbor thinks it might be a dog.

69 Look at this headline and finish the article about the strange events in Bell Towner.

70 We found the reason!!!!!! Three monkeys escaped from(从…逃走) the zoo.

71 3b: Write another paragraph about Bell Tower using these notes.
people things ideas Chu family hear late-night footsteps in the hallway might be the neighbors Lao Zheng hear something trying to get in the window might be the wind Xiao Ning find garbage in front of her house might be cats the director of the zoo say three monkeys escaped must be the monkeys

72 Sample Late that night, the Chu family living on the first floor found some strange footsteps in the hallway. They thought they might be their neighbors’. Lao Zheng, one of the Chus’ friends thought it might be someone trying to get in the window. The other morning, Xiao Ning, a student who lives next door, found some garbage in front of her house. She thought it must be garbage of some wild dogs. But the old hunter thought it could be garbage of cats. There must be some animals visiting the hallway. But what could it be?

73 4 GROUPWORK Think of a dream you had recently and tell your classmates about it. Your classmates guess what the dream might mean. A: Last night I had a dream. In my dream, I was swimming in an ocean of paper. B: Maybe it means you’re afraid of too much homework!

74 A: Last night I had a dream. In my
dream, I was chased by a group of people. I was very frightened. B: Maybe it means you feel nervous under the pressure of study, you are afraid of falling behind others.

75 A: The night before last I had a
dream. In my dream, I saw my grandma. In fact, she has been dead for 3 years. B: Maybe it means you’re looking forward to seeing her; you must miss her very much.

76 In my dream, I was swimming in an ocean of
paper. 在我的梦中，我浸泡在数不尽的试卷中。 in an ocean of 或 in oceans of是介词短语，口 语中常用，意为“极多的;，用不尽的。在of后接 不可数名词或可数名词复数形式均可。 例如： 他认为他有用不尽的时间。 He thinks he has oceans of time.

77 Writing: 半夜时，突然听到有敲门声，请你根据下面的词组提示，写几句话来猜测是谁在敲门，并写出理由。 要求：1.字数为80字左右。
2.语句流畅，书写工整。 can’t be parents, at home; can’t be thief, knock at the door; may be neighbor, want some help; must be aunt, like to…..

78 Story Time

79 Story Time Father and Son Where might they be going?
What might happen to them?

80 Do you think he can repair the car? Why?
Story Time Father and Son repair jump Do you think he can repair the car? Why? What could happen to Son ?

81 Story Time Father and Son skateboard, stand, push

82 备选活动二

83 Who stole the money from the safe?

84 CONAN

85 One day, when Conan was playing football, he got a phone call from super-rich Bill.

86 Half an hour ago, someone knocked (打昏) me out while I was looking inside my safe (保险柜)! Then the attacker(袭击者) took all the money in it!

87 Are you alone here? There's just Fred the gardener, Molly the cook and Joe the driver.

88 driver Joe gardener Fred
I was watering the plants in the garden. I didn't see or hear anything! I was washing the car in the garage. I don't know what happened! driver Joe gardener Fred

89 I was always here to cook this roast (烤肉) for the master
I was always here to cook this roast (烤肉) for the master! I don't know what's going on! cook Molly

90 Conan looked around without a word
Conan looked around without a word. He found the meat is still hard and all these three persons' shoes are wet . Then he went back to the safe and saw some water near it.

91 Suddenly he pointed to one of the three persons. "It's you
Suddenly he pointed to one of the three persons. "It's you!" he shouted.

92 driver Joe who stole all the money from the safe?
It can't be... because... It may/could/migtht be... because... Oh, it must be... because... driver Joe gardener Fred cook Molly

93 Unit 5 It must belong to Carla. self-check & reading

94 Revision 1．他跑步也许为了锻炼。 2．我很担心她。 He could be running for exercise.
2．我很担心她。  He could be running for exercise. I’m worried about her.

95 1 anxious, strange, worried, careful, favorite
: Fill in the blanks with the correct word given. anxious, strange, worried, careful, favorite 1) Mark Twain is Mary’s author. 2) Be of the dog that doesn’t bark. 3) Fred is afraid of flying. He feels before he gets on the plane. 4) I haven’t seen my cat for two days. I am very about her. 5) There is a smell in the house. Do you know what it is? favorite careful anxious worried strange

96 Read these proverbs from around the world
Read these proverbs from around the world. What do you think they might mean? Discuss with your classmates. 2 A proverb is a short popular saying, usually of unknown and ancient origin, that expresses effectively some common truth or useful thought. It is a wise saying. Read these proverbs from around the world. What do you think they might mean? Discuss with your classmates.

97 Proverb world 1. One finger cannot lift a small stone.
We must unite (联合，团结)to do things. 众人拾柴火焰高。 2. When an ant says “ocean”, he’s talking about a small pool. Different people have different views on things. 人们所处的环境不同，对事物的看法也不同。

98 3. It is less of a problem to be poor than to be dishonest.
We should be honest even if we are poor. 诚信为先，富贵在后。 4. Be careful of the person who does not talk, and the dog that does not bark. People or animals who are silent might be thinking about hurting others. 小心不说话的人和不叫的狗/ 明枪易挡，暗箭难防。 5. You can’t wake a person who is pretending to be asleep. If others don’t need help, it’s useless to offer them some. 帮人也需要人同意。

99 6. Tell me and I’ll forget. Show me and I may not
remember. Let me try, and I’ll understand. The best way of learning is to practice doing something. 多听和多看，不如多实践/纸上得来终觉浅，绝知此事要躬行/实践出真知。 7. Don’t let yesterday use up too much of today. Don’t let past things worry you anymore. 今日事，今日毕。 8. He who would do great things should not attempt them all alone. If you want to do something great, do not be shy to ask for help. 一个篱笆三个桩，一个好汉三个帮。

100 More proverbs

101 1. A drop in the ocean. 2. What is done cannot be done. 3
1.A drop in the ocean. 2.What is done cannot be done. 3.One false step will make a great difference. 4.Forgive and forget. 5.Every shoe fits all tastes. 6.All that glitters is not gold. 7.Beauty is only skin deep, but ugly goes straight to the bone. 8.A word spoken is past recalling. 9. Think twice before you do. 沧海一粟 ,九牛一毛 。 覆水难收。 失之毫厘 ,谬以千里。 既往不咎。 无万全之策。 闪光的未必都是金子 。 江山易改，本性难移。 . 一言既出，驷马难追。 三思而后行。

102 10. A friend in need is a friend indeed.
11. Laughter is the best medicine. 12. Learn to walk before you run. 13.Learning is the enterprise of a lifetime. 14. Practice makes perfect. 15.Money makes the mare go. 16.Once bitten, twice shy. 17.One turnip，one pit. 18.Rome wasn‘t built in a day. 患难见真情。 笑一笑,十年少。 欲速则不达 。 学无止境。 熟能生巧 。 有钱能使鬼推磨。 一朝被蛇咬,十年怕草蛇 。 一个萝卜，一个坑。 罗马不是一天建成的。 / 冰冻三尺，非一日之寒。

103 19. No way is impossible to courage.
20. God helps those who help themselves . 21. Do as you would be done by. 22. You never know what you can till you try. 23. He who lives by the sword shall die by the sword. 勇者无惧 。 自助者天助 。 己所不欲，勿施于人。 是驴子是马，拉出来遛遛。 玩火自焚 。

104 A passage about proverbs.
1. Read and choose the correct answers. 2. Check the answers. 1. B A C 4. C A

105 3 In each line, circle the word that doesn’t belong.
1. escape owner chase run 2. picnic lunch dinner alien 3. land apple ice cream chicken 4. creature alien exercise visitor 5. lost grass tree flower

106 Exercise 根据汉语完成句子。 1. If you ____ ___ ____(知道) where it have any idea
might be, please call me. 2. It must be Mary’s book. Hemingway is ___ ______ _______ (最令她欣赏的作家). have any idea her favorite author 3. This sweater is _____ ___(太) small for me. 4. They must be ______ __ _____ (拍电影). much too making a movie

107 5. Our neighborhood ___ ___ ___(曾经) very quiet.
6. Zhou Gu _____ _________ (接受采访)by the local newspaper. 7. If you find something stolen in your house, you’d better ___ ___ _____(报警). 8. I wonder if the prize ______ ___(属于) him. used to be was interviewed call the police belongs to

108 Grammar focus 一、 什么是情态动词
Can, could, may, might, will, would, shall, should, must, ought to 情态动词用于其他动词原形前，增添某种意思，如表示 对某事有把握，或必须做某事，或允许做某事。各个情 态动词有不同的意思。 二、语法特点： 无人称变化, 有时态变化 She may know his address. 疑问，否定，反意疑问用该情态动词 后接动词原形，ought 除外(ought to do…) 无不定式或分词形式 有缩略形式

109 三、can和could的区别和用法 1. can表示体力和脑力方面的能力, 或根据客观条件能做某种动作的“能力”。 e.g：　 Can you speak English？　 Can you make a cake？ 　 can用在否定句和疑问句中时有时表示说话人的 “猜测”或 “不肯定”。e.g： Can the news be true？(在日常会话中, can可代替may表示“允许”, may比较正式)

110 2. could 是 can的过去式, 表示过去有过的能力和可能性, 还有怀疑和不肯定的意思(在否定和疑问句中)。e. g
2. could 是 can的过去式, 表示过去有过的能力和可能性, 还有怀疑和不肯定的意思(在否定和疑问句中)。e. g. She couldn’t skate when she was five years old.　 （能力） At that time we thought the story could be true.（可能性） could用来提问, 是有礼貌的请求 Could...，please? 语气较为婉转。 e.g. Could I speak to Mr. Smith, please?

111 四、Might和may的区别和用法: 1. may的用法: a. 表示“允许”或“请求”。 e. g
四、Might和may的区别和用法: 1. may的用法: a. 表示“允许”或“请求”。 e. g. May I come in？ 在使用这一用法时需注意: may表示“允许”的否定形式是must not, 意思是“不应该” “不许可”。e. g. —May I take this book out of the reading room？ —No, you mustn’t.． b. 表示说话人的猜测，认为某一事情“或许”或“可能”发生。e. g. He may know the answer.

112 c. may用在感叹句中可表示祝愿、愿望。e. g
c. may用在感叹句中可表示祝愿、愿望。e. g May you succeed．(祝你成功。) May you have a pleasant journey.(一路平安。) 2. might的用法: a. might可以代替may, 表示现在时间的动作，但语气较为婉转客气或更加不肯定。e. g. Might I take a suggestion？ b. might用来表示现在时间时, 还可表示“规劝”。 e. g. You might pay more attention to spoken English．

113 五、must与have to的区别 have to比较强调客观需要, must着重说明主观看法。另外have to能用于更多时态, 比较下面的句子： We had to be there at 10:00. 有时两者都可以用, 意思差别不大。e. g. We must/have to leave now. must在表示说话人对事物的推测时候要注意它比may肯定得多, 相当于汉语的“一定”或“准是”。(只有在肯定句中能这样用。) e.g. This must be your room． 　 在回答由must引起的问题时, 如果是否定的答复，不能用mustn’t, 而需要用needn’t或don’t have to, 因为mustn’t是“一定不要”的意思。

114 Choose the best answer. 1. –Listen! Helen is singing in the next room. –It ____ be Helen. She has gone to Beijing. A. must B. can’t C. might D. should 2. – Jill looks so painful, there __ be something wrong with her. – Oh dear! We’d better take her to the nearest hospital at once. A. can B. should C. would D. must 3. –May I try on the jeans? – Yes, you____ A. should B. can C. must D. need B D B 4. –Must I finish the work today? –No, you ____. You can finish it tomorrow. A. mustn’t B. can’t C. shouldn’t D. needn’t 5. –Do I have to come back tomorrow? –Yes, you _____. A. can B. may C. must D. should D C