2.　 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 .

1.　 Read the instructions .Make sure the Ss understand what they should do .

4.　 Practice reading .

　　 Step 3　 While-task

　　 SB Page 18 , 1b .

3.　 Check the answers .

2.　 Look at the picture .Point out the six people .Match the statements with the people in the picture .

1.　 Point to the sentences .Read the sentences .Explain what each one means .

3.　 Dictate the words in Unit 2 .

　　 Step 2　 Pre-task

　　 SB Page 18 , 1a .

2.　 Check the homework .

1.　 Greetings and free-talk .

2.　 学习过去进行时态。

　　 Teaching aids : a tape-recorder , cards .

　　 Period　 1

　　 Teaching procedures :

　　 Step 1　 Leading in