目标：1.掌握本模块掌握本模块Conversion和Suffix语法知识
2.能听懂和辨别词性转化和后缀的词，扩大词汇量
Step I: Conversion (词转化)
Compare two words underlined in the sentences
1. During this time, his average was more than 30 points a game.
2. He averaged over 50points a game for an entire season.
Translation:
1. We pump water from a well to water the cabbages every night.
This pump works quite well.
2. There is a strange sound in th e room.
It sounded like a train that was going under my house.
3. He is dr iving a new car.
Let’s go out for a drive next Sunday.
4. We will visit the factory next Sunday.
