约1650字。

　　Unit 3  What were you doing when the UFO arrived ?
　　Analysis of this unit:
　　In this unit, students learn to talt past events. They learn the Past Progressive Tense to tell stories. And they also learn Adverbial clause concluded with “when” or “while”. Grammar of this unit is very difficult. So the teacher should give students more time and chances to practice and imitate.
　　Teaching contents:
　　1. Words : barber shop , well , bathroom , accident , earth , silence , playground , around , strange , kitchen , modern , follow , shirt .
　　2. Adverbial clause concludes with “when or while”
　　3. The Past Progressive Tense
　　Teaching goals:
　　1. To talt past events
　　2. The Past Progressive Tense
　　3. To tell stories
　　4. To learn Adverbial clause concludes with “when or while”
　　Important points:
　　1. To review the Simple Past Tense
　　2. To learn Adverbial clause concludes with “when or while”
　　Difficult points:
　　1. To tell stories by using the Past Progressive Tense
　　2. To learn the Past Progressive Tense
　　Teaching aids: a tape-recorder, cards.
　　Period 1
　　Teaching procedures:
　　Step 1 Greeting
　　Greet students.
　　Step 2  Leading in
　　1. Do dictation.
　　2. Free talk:
　　1) Do you FO?
　　2) If you see the UFO, what will you do?
　　Step 3  Presentation
　　T: This class we are going to talt something about the UFO. Now open your boorn to page 18. Fist look at the picture. When the UFO arrived, What were people doing? (Let students say something about the picture.)  
　　SB Page 18, 1a.
　　1. Point to the sentences .Read the sentences .Explain what each one means .
　　2. Look at the picture .Point out the six people .Match the statements with the people in the picture.
　　3. Check the answers.