1. Unit 5 It must belong to Carla

2. 2 3 1 4 5

3. Reading and Speaking (3a: P36) A thank-you letter must be a personal letter. In the letter the writer may express his gratitude for what the receiver has done for him/her. A thank-you letter must be a personal letter. In the letter the writer may express his gratitude for what the receiver has done for him/her.

4. 1. If you have any idea where it might be, please call me. If you have any idea … = If you know… 意思是 : 如果你知道 …… any 用于 if 引导的条件从句中, 有 “ 若 干的，有多少 ” 的意思。 1. If you have any idea where it might be, please call me. If you have any idea … = If you know… 意思是 : 如果你知道 …… any 用于 if 引导的条件从句中, 有 “ 若 干的，有多少 ” 的意思。 Explanation

5. e. g. If you have any time, I’d like to talk with you. 2. I think I dropped it during the concerts so it might still be in the symphony hall. 用在已知的时期、节日或表示时间 观念的名词前 e. g. If you have any time, I’d like to talk with you. 2. I think I dropped it during the concerts so it might still be in the symphony hall. 用在已知的时期、节日或表示时间 观念的名词前

6. e. g. during the summer, during my holidays, during our stay in Japan. 意思为 : “ 当 … 之际 ” 既可指某一动作 在某个时期内连续不断的发生, 也可 指某个动作在这一时期内的某一时 间发生： e. g. It snowed all day but stopped snowing during that night. e. g. during the summer, during my holidays, during our stay in Japan. 意思为 : “ 当 … 之际 ” 既可指某一动作 在某个时期内连续不断的发生, 也可 指某个动作在这一时期内的某一时 间发生： e. g. It snowed all day but stopped snowing during that night.

7. Subject: Thanks! From: Susan Dear Sandy, When you left a package for me yesterday, I had difficulty waiting until my birthday to open it. I don’t know how to thank you for such an attractive present. Subject: Thanks! From: Susan Dear Sandy, When you left a package for me yesterday, I had difficulty waiting until my birthday to open it. I don’t know how to thank you for such an attractive present. One sample thank-you letter: One sample thank-you letter:

8. It is something that will give me pleasure for a long time to come. Please accept my sincere thanks and best wishes. Cordially, Susan It is something that will give me pleasure for a long time to come. Please accept my sincere thanks and best wishes. Cordially, Susan

9. A: What do you think “anxious” mean? B: Well, it can’t mean “happy”. A: It might mean “worried”. B: Oh, yes. She’s worried because of her test. 3b

10. A: What do you think “concert” mean? B: Well, it can’t mean “music”. A: It might mean “a performance of music by players or singers”. B: Oh, yes. She was in the symphony hall.

11. Sample conversations(4:P36) Sample conversations(4:P36) 1. — Here is a Chinese-English dictionary. It could belong to Mary. I know she has one. 1. — Here is a Chinese-English dictionary. It could belong to Mary. I know she has one. — I don’t think so. It can’t be Mary’s. This one is new, but hers is old. — I don’t think so. It can’t be Mary’s. This one is new, but hers is old.

12. 2. — Here is a flower. The owner must be a girl. 2. — Here is a flower. The owner must be a girl. — Well, it could be a boy. The flower might be a present for his teacher. — Well, it could be a boy. The flower might be a present for his teacher.

13. A: Here’s a school T-shirt. The owner must be a student. B: Well, it could be a classmate of ours. The school T-shirt is the same as ours.

14. A: Here’s a hair band. The owner can’t be a boy. B: Well, it could be a boy. The hair band might be a present for his mother.

15. Fill in the blanks with must,may, might, could, can’t 1.Whose earrings are these? They _____ be Mary’s. she wears earrings sometimes. 2.Gina ______ come to the party tonight, but I’m not sure. 3.The telephone is ringing, but nobody answers it. He ______ be at home. 4.Is this Lan Qiang’s boxing glove? Yes, it _____ be his. There is his name on the back. 5.You’d better take an umbrella. It ______ rain this afternoon.

16. Please say what is happening in the classroom. Please say what is happening in the classroom.