文档介绍：Unit 6 When was it invented? Section A 1 （1a—2c)
and try to match the invention with the proper year。
4。 Play the recording again。
5. Check the answers。
预设：通过猜测创造的时间,让学生对各项创造有一定的理解,降低难度
设计意图：通过猜测创造的时间，用was /were invented 、、、句型描绘,熟悉其用法，并为听力做铺垫
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.
3. Let some pairs ask and answer in pairs.
e。g. A： When was the telephone invented?
B： I think it was invented in 1876。
预设：个别同学不会用新的知识构造，因此多模拟1c例句。
设计意图：运用知识,进步学生的表达才能
. Learning the new words & Listening
Look at the pictures then learn the new words.
Work on 2a:
T: Tell Ss they will hear some interesting inventions.
1。 Look at the pictures in 2a。 Discuss the things what they are used for.
2。 Play the recording for the Ss to listen and number the pictures.
3。 Play the recording again to check the answers.
Work on 2b：
1。 Let Ss read the chart below. Explain some main sentences for the Ss. Make sure they know what to do。
2。 Play the recording for the Ss to fill in the blanks.
3. Play the recording again to check the answers。
4. Listen again and fill in the blanks.
预设:通过前面的学习,大家对被动语态有了一定的理解，但此活动中有填写内容，由于部分同学