约1590字。

　　Unit 3  What were you doing when the UFO arrived?
　　Teaching goals :
　　Words : barber shop , well , bathroom , accident , earth , silence , playground , around , strange , kitchen , modern , follow , shirt .
　　when , while 引导的时间状语从句。
　　学习过去进行时态。
　　利用知识谈论过去发生的事情。
　　复习过去式，学会讲故事。
　　了解一些自然科学知识和社会科学知识。
　　Important and difficult points:
　　when , while 引导的时间状语从句。
　　学习过去进行时态。
　　Teaching aids : a tape-recorder , cards .
　　Period  1
　　Teaching procedures :
　　Step 1  Leading in
　　Greetings and free-talk .
　　Check the homework .
　　Dictate the words in Unit 2 .
　　Step 2  Pre-task
　　SB Page 18 , 1a .
　　Point to the sentences .Read the sentences .Explain what each one means .
　　Look at the picture .Point out the six people .Match the statements with the people in the picture .
　　Check the answers .
　　Practice reading .
　　Step 3  While-task
　　SB Page 18 , 1b .
　　Read the instructions .Mare the Ss understand what they should do .
　　Look at the dialogue in the picture .
　　Explain :
　　过去进行时态的构成: was / were + doing  .
　　用法:表示过去某一时刻或某一段时间正在进行的动作，一般用时间状语来表示。
　　I was standing in front of the library when the UFO arrived .
　　Play the tape twice . Circle the correct responses .
　　Check the answers .
　　Step 4  Post-task
　　Talt what people were doing when the UFO arrived .
　　Step 5  While-task
　　SB Page 19 , 2a .
　　Read the sentences .Mare the Ss understand what they mean .