S1: It's a car.

　S2: It's a telephone.

　S3: It's a television.

　T: Do you know who these inventors are?

　S1: Karl Benz

　S2: Alexander Bell

　S3: J. L. Baird

　Let Ss match the inventions and the inventors.

Ⅱ. Presentation

　引导学生们学习一般过去时态的被动语态结构。

让学生们看大屏幕的如果爱和发明者的图片,并将句子改为被动语态。

　如：

　T: Karl Benz invented the first car in 1885.

　　The first car was invented (by Karl Benz) in 1885.

Ⅲ. Talking

1. Look at the pictures in 1a. Discuss with your group, in what order do you think they were invented? Try to number them [1-4].

2. Ss discuss with their partners and number the pictures.

3. Talking about the inventions:

　A: I think the TV was invented before the car.

　B: Well, I think the TV was invented after the TV.

Ⅳ. Listening (1b)

1. T: Tell Ss look at the pictures and years on the left.

2. Play the recording for the Ss to listen.

3. Ss listen to the conversation and try to match the invention with the proper year.

4. Play the recording again.

5. Check the answers.

Ⅴ. Pair work (1c)

1. Ss try to remember the invention and the year.

2. Student B, cover the dates. Student A, ask Student B when the things in the picture in 1b were invented. Then change roles and practice again.