answer : I have been studying English since 2003./I have been studying English for two years .Get Ss to repeat . Repeat the activity with other students . Step 3 Pre-task 给出以下例子让学生组内仿造句子 ①When did you start to study English? ②I started to study English 3 years ago. ③How long have you been studying English? ④I have been studying English for 3 years. ⑤I have been studying English since 3 years ago. Step 4 While-task SB Page 44 , 1b . 1. Play the recording and get Ss to fill in the chart . 2. Correct the answers . SB Page 44 , 1c .In pairs ,get the students to ask and answer .Then ask some pairs to say their conversations to the class. SB Page 45 , 2a & 2b . 1. Read the instructions and have Ss know what to do . 2. Play the recording .Ss write down their answers . 3. Correct the answers . Step 5 Post-task SB Page 45 , 2c . 1. Read the example in sample dialogue in activity 2c . 2. In pairs, role play the interview between Alison and the reporter . 3. Ask two pairs to say their conversations to the class . Step 6 Grammar Focus SB Page 45 , grammar focus . 1. Review the grammar box . 2. Explain that in these sentences “since” comes before a date and “for” before a period of time . 3. Ask What is the difference between “How long did you skate ?”and “How long have you been skating?” .Explain that “did” question means that the person has stopped doing the action .The “have you been” question shows that the person is continuing to do the action at the present moment . Step 7 Summary(课堂小结) (课堂小结) 1. Let the Ss make summaries about this part . 2. Teacher will add new knowledge. Step8 Test It takes five minutes to have a test . Then check two groups . 用所给单词的适当形式填空。