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1、Unit 9When was it invented?Section APeriod TwoWords and expressions bulb light bulb microwave microwave ovenn. 電燈泡；電燈電燈泡；電燈電燈泡電燈泡n. 微波微波微波爐微波爐What is it / are they used for?Its an annoying invention.Because it wakes me up when Im sleeping. alarm clockI think computer is the most helpful invention. B

2、ecause it helps me search the information that I need. computerWhat do you think is the most helpful or annoying invention?3a3aPairworkMake a list of five helpful inventions and five annoying inventions.Helpful inventions: vacuum cleaner, soundproof door and window, car, computer, fax machineAnnoyin

3、g inventions: air-conditioner, truck, telephone, junk food, ice cream oral practiceSentence pattern:What is this in the picture?What is it used for?Do you think it is helpful / annoying?A: What is this? B: It is an alarm clock. A: What is it used for?B: It is used for waking people up in the morning

4、.A: Do you think it is annoying?B: Sometimes, when I want to go on sleep.Dialogue 1:Dialogue 2:A: What is this? B: It is a light bulb. A: What is it used for?B: It is used for giving light.A: Do you think it is helpful?B: Yes, I think so. Because I always do homework and read books in the evening by

5、 its light.A: What do you think is the most helpful invention?B: I think the most helpful invention is the light bulb.A: Why is that?B: Well, it gives people more time to work and play every day.3b3bPairworkA: What do you think is the most annoying invention?B: I think the most annoying invention is

6、 the air-conditioner.A: Why is that?B: Well, I feel uncomfortable in the room with an air-conditioner.GROUPWORKWhat would you do if you are alone on a tiny island?Imagine that you are alone on a tiny island. Choose five inventions you would like to have on the island with you. Tell the group what yo

7、u choose and why.A: Id like to have a radio because I could listen to music all day.B: Yes, but thats not going to help you leave the island. I think it would be better to haveA: Id like to have some matches because I could light a fire to keep warm.B: Yes, but thats not going to help you leave the

8、island. I think it would be better to have a cell phone.Dialogue 1:Dialogue 2:A: Id like to have a telescope because I could look far.B: Yes, but thats not going to help you leave the island. I think it would be better to have a signal lamp.用所給單詞的適當形式填空。用所給單詞的適當形式填空。1. What do you think is _ (useful) one of the three?2. This machine _ (use) to make noodles.3. I think the computer is a great _ (invent).4. Computers can be used for _ (study) English.5. A TV set gives people more opportunities _ (enjoy) themselves.the most usefulis usedinventionstudyingto enjoy