2. collect v. 收集；搜集 shell n. 贝壳；壳

3. 1a GROUPWORK Discuss theses questions. 1. How long did you sleep last night? 2. When did you start class today? 3. How long have you been in class today? For eight hours. Since seven forty-five in the morning. I have been in class for one hour.

4. 1b Listen. A reporter is talking to the participants in a skating marathon. Fill in the chart below. How long? Alison Sam Victor Celia I’ve been skating for five hours. I skated for four hours. I’ve been skating for five hours. I skated for two hours. skate v. 滑冰 marathon n. 马拉松

5. 1c PAIRWORK Ask and answer questions about the people in the picture. A: How long has Alison been skating? B: She’s been skating for five hours. A: How long did Sam skate? B: He skated for four hours.

6. 2a Listen to the interview with the skating marathon winner and check( ) the questions you hear. Questions 1. How long did you skate today? 2. How long have you been skating today? 3. Was this your first skating marathon? 4. Do you skate every day? 5. When did you get your first pair of skates? 6. How long have you been skating? n. 一对；一双 n. 溜冰鞋

7. Questions 1. How long did you skate today? 2. How long have you been skating today? 3. Was this your first skating marathon? 4. Do you skate every day? 5. When did you get your first pair of skates? 6. How long have you been skating? 2b Listen again. Draw lines to match the questions with answers in activity 2a. Answers a. No, I skated in a marathon last year. b. Yes, I do. c. For six hours. d. Since I was seven years old. prep. 自从；自 … 以来

8. 2c PAIRWORK Student A is the reporter. Student B is Alison. Role play the interview. A: How long have you been skating? B: I’ve been skating since I was seven years old.

9. How long have you been skating? I’ve been skating since nine o’clock. I’ve been skating for five hours. How long did you skate? I skated for two hours.

10. (The Present Perfect Progressive Tense) 表示动作从过去某一时间开始，一直延续到现在，可能还要延续 下去。常和表示一段时间的状语连用。 They have been working for two hours. 他们已工作两小时了。 for 和表示一段时间的词组连用 They have been running since six o’clock. 从 6 点起他们一直在跑。 since 和表示过去某一时刻的词或词组连用 I have been waiting for you since I came here. 自到这儿以来我一直在等你。 since 后可跟句子，句子时态多用一般过去时

11. 3a Read the passage and then complete the table. I’m talking to you from the Hilltop School Skating Marathon. Here, students are skating to raise money for charity. For every hour they skate, each student raises ten yuan for charity. The skating marathon has been going for five hours now, and several skaters are still skating. Alison was the first one to start, and has been skating for the whole five hours. Next is Sam, and he has been skating for four hours. Lu Ning has been skating for four hours too, and Li Chen just started an hour ago. Hilltop School 山顶学校 raise v. 筹集 several adj. 几个的 skater n. 溜冰者

12. NameHas been skating for Alison5 hours Sam4 hours Lu Ning4 hours Li Chen1 hour 3b It’s now 2pm. Write the Students’ names from 3a on the time line. 9am10am11am12am1pm2pm Alison Sam Lu Ning Li Chen

13. 4 GROUPWORK Interview your classmates. Ask them what sports they play and fill in the chart. A: Ye Lan, what sport do you play? B: Tennis. A: When did you start? B: When I was eleven. A: So how long have you been playing? B: Three and a half years. NameSportWhen startedHow long Ye Lantennis11 years old three and a half years