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了解一些近现代发明的时间及用途，激发自己热爱发明的情感。培养想象力，善于观察事物。面对难题，用积极的态度去解决，发挥想象力，认识世界，改造世界。
二、Teaching difficult and important points:
1. Teaching important points：
1) 本课时的单词、词组和句型，学习运用一般过去时态的被动语态。
2) 学会询问发明时间及用途的基本句型：
—When was the telephone invented?
—I think it was invented in 1876.
2. Teaching difficult points：
运用一般过去时态的被动语态来讨论发明的发明时间及用途。
三、Teaching porcedures:
Step1. Warming up
1. 展示一些近代发明的图片与近代发明的发明者，让学生们将图片与发明者相连。
T: Do you know what these inventions are?
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
2. Let Ss match the inventions and the inventors.
Step2. 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.
Step3. Talking
1.Look at the pictures in 1a. Discuss with your group, in what order do you think they were invented? Try to number the[1-4].
2. Ss discuss with their partners and number the pictures.
3. Talking about the inventions: