教学目标：
知识目标：较好地掌握过去进行时态。 What were you doing? I was digging a hole.
能力目标：初步掌握一般现在进行时与过去进行时的转换。
情感目标：用过去进行时态表达简单的个人意愿。
教学重难点：
掌握过去进行时态时间含义。
教学过程：
The First Period
Step One Review.
1. Place Picture Cards 9—16（ from SB 4 Unit 2） on the board. For example: exercising, working, shouting, thinking etc. Ask Ss What are they doing? [Ss: He‘s exercising. She‘s shouting.]
2. Take picture cards off the board, ask one student to come up and pick one of the cards. Tell him/ her to act out what is on the card. T: What‘s he/ she doing? [Ss: （S1‘s name） is thinking.]
Step Two. Presentation
Have Ss look at the pictures on the page. T? Point to the first and second picture.） Who‘s this ? [ Ss: It‘s Gogo, Jenny, Ben and Lisa.] T: （ Point to the second picture.） What are they doing? [Ss: They are talking.] T: Look at the third picture . Ben is digging. Let‘s dig. Model digging. T: I‘m digging. Repeat. [Ss: I‘m digging.] T: OK,everyone. Sit down. Step