What nationality is she?
I think she is Chinese.
I don't think so.She can't be Chinese.
She must be Japanese.
What nationality is he? I think he is French.
• 他不可能是老师，他肯定是牙医。 He can’t be a teacher. He must be a dentist. • 她不可能是中国人，她肯定是日本人。 She can’t be Chinese. She must be Japanese. • 它不可能便宜，肯定很贵。 It can’t be cheap. It must be expensive. • ---门铃响了。肯定是Bob。 ---There’s the doorbell. It must be Bob. ---不可能是Bob，他去电影院了。 ---It can’t be Bob. He’s gone to the cinema.
正在进行的情况进行 2. 情态动词+be doing，表对:_______________ 推测。 例：He must be having a lot of money.
他一定有很多钱。


他们一定正在睡觉吧。
Jim may be playing the basketball. 吉姆可能正在打篮球。
actress 女演员
She is a famous actress. 她是一个著名的女演员。
actor 男演员
He is my favourite actor. 他是我最喜欢的男演员。
男服务员 waiter 女服务员 waitress
男主人 host 女主人 hostess
• • • • • • • • •
Listen to the tape and answer the questions:
• What does Karen Marsh do? She is an actress. • Is the man an actor? Yes, he is. • Is Karen Marsh look young? No, she isn’t. • How old is Liz? She is not more than twenty-nine.
Guess:What are they doing?
I think he is singing.
I don't think so.He can't be singing. He must be playing the piano.
I think they are eating. I don't think so. They can't be eating. They must be talking.
Notes on the text
• I think I can. 我想我可以 I don’t think I can.我想我不能 I think I can’t. • 我认为你是对的。 I think you are right. 我认为你不对。 I don’t think you are right. I thought so. :否定式： I didn't think so.
Summary 现在或将来的情况进行 1. 情态动词+原形，表示对__________________ 推测。
• 例：He must be a teacher. • 他一定是一名老师。（系表）
must be 肯定是 • 肯定的推断： can’t be 不可能是 • 否定的推断： （而不是mustn’t be）
I think he is a worker. I don't think so. He ________a worker.
He ________ a cook.
I think he is ...
I don't... He ________ a ...
He ________ a hairdresser.
I don't think so. He can't be French.
He must be Germany. Beck:贝克。
Guess！How old are they?
I think she is 35 years old. I don't think so.She can't be 35. She must be 40 years old. I think he is 65 years old. I don't think so.He can't be 65. He must be 70 years old.
have to 强调客观的需要，含有“不得不，被迫”的意 思。而must 强调主观的看法，即主观上的必要，有责任， 有义务去做。have to 有人称，时态的变化，而must没 有。 1. Mum isn’t at home, so I have to look after my sister.
2. We must help each other. We must study hard．我们一定要努力学习。 He had to go on foot because there was something wrong with his car.因为他的汽车坏了，他不得不走着去。
They must be sleeping.
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3. 情态动词+have done，表示对过去的情况进 行推测。(明天的课程中会再进行学习。) • 例：It must have rained yesterday. • 昨天一定下雨了。 • I can’t have been late yesterday. • 我昨天不可能迟到。 • She could have phoned you last night. • 她昨晚应该给你打电话了。
Karen Marsh
Questions on the text Who is only twentynine, and why is it so unclear?
Karen Marsh
New words
famous 著名的
• be famous for 因为…而出名 He is famous for his novels. 他因他的小说而出名。 • be famous as 作为…而出名 Hangzhou is famous as a tourist place. 杭州是一个旅游胜地。
Translation：
• It must be cold outside. 外面肯定很冷。 • They must be thirsty. 他们肯定很渴。 • He can’t be Mr. Read. 他不可能是里德先生。 • She can’t be late. 她不可能迟到。
Translation：
Free talking
• • • • • • Do you like watching TV ? Do you know some famous actresses? Who’s your favourite actress? Do you know about them? Do you want to be an actor/ actress? Why?
look old 看起来很老 look：名词：have another look 再看一眼 look 是系动词，后加形容词 1.You look happy today.今天你看起来很开心。 2. Doesn’t Mary look sad!玛丽看起来很难过啊！ 系动词：sound, smell, taste, feel, get, turn, seem be, become… 1. The music sounds wonderful. 2. The flowers smell good. 3. His face turns red. 4. The food tastes good. 5. He seems quite happy.
Pairwork!
• • • • • • • Guess your partner: How old is your father/mother? What's your father's/mother's job? What's he/she doing now? Do it like this: He must be ... She must be doing....
must I ________ take a taxi, because I don’t want to go there by bus. have to I ________ take a taxi, because I can’t get a bus.
Review!
have to 不得不，必须 must 必须 has to will have to had to have had to
I think they are singing. I don't think so.They can't be singing. They must be dancing.
What are their job?
I think he is a cook. I don't think so. be a cook. Hecan't ________ must be a baker. He ________
Lesson 127
Lesson 127 A famous actress
Grammars
• 表示肯定的推断：must be“肯定是”