约1410字。

　　Unit 6  How long have you been collecting shells ?
　　Teaching goals:
　　Words and expressions in this unit .
　　现在完成进行时的用法。
　　Patterns: How long have you been doing sth ?
　　I have been doing sth since … .
　　I have been doing sth for … (period of time) .
　　谈论人们做某事持续多长时间。
　　谈论人们的业余爱好。
　　Important and difficult points:
　　Words and expression in this unit .
　　现在完成进行时的用法以及与现在进行时和过去进行时的区别。
　　Teaching aids: teaching cards , pictures , a tape recorder .
　　Period  1
　　Teaching procedures :
　　Step 1  Leading in
　　Ask one of the students the question: Liu Ziyang, when did you study English ?Help the student answer: I studied English in 2003.Say,in this unit we’re going to talt how long we’ve been doing things .Then as Ziyang, how long have you been studying English ?Help him to 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 2  Pre-task
　　SB Page 44 , 1a .
　　Asdent to read the three questions ,and answer the questions as example like this: I started class at 9:00 .I slept for ten hours . I have been skating for five hours/ I have been skating since five years ago .
　　Have Ss work in groups of four .
　　Ask the class each question and call on several different students to answer .
　　Step 3  While-task
　　SB Page 44 , 1b .
　　Play the recording and get Ss to fill in the chart .
　　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 .
　　Read the instructions and have Ss know what to do .
　　Play the recording .Ss write down their answers .
　　Correct the answers .