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3. be harmful to 对……有害 4. aside from 除了……之外
5. take up 占用；占据 6. open up 打开，展开
7. far away 遥远 8. get sth. done 使某事被做
III.朗读课文，理解大意。
【预习自测】
I. 用所给单词适当形式填空。
1. The boy is so smart that he can memorize ten new words in ___________(second).
2. You must get it ________(do) in another two days.
3. Cellphones make it easy for people __________(stay) in touch.
4. Surfing the Internet too much causes people ___________ (be) less social.
5. Some bad people use the Internet ___________(steal) others’ personal information.
探究案25分 得分________
课文探究：
探究一：It helps us get things done more quickly.它帮助我们使事情做得更快。
“get+宾语+done”是固定短语，意为“使……被做”，其中done 与宾语是动宾关系，实际上是让别人去做这件事。相当于“have+宾语+done”.
Eg: Teenagers shouldn’t be allowed to get their ears pierced.
青少年们不应该被允许打耳孔。
Have a try:根据汉语提示完成句子。
1.我今天下午要去修我的自行车。
I am going to _________ my bike ________ this afternoon.
2.请你帮我浇花好吗？
Could you please help me ________ my flowers ___________?
探究二：Spending too much time online is harmful to people’s health.
too much意为“太多”，中心词是“much”,后跟不可数名词；too many 也意为“太多”，中心词是“many”,后跟复数名词；too是用来加强语气。而much too意为“很，非常”，相当于very,后跟形容词或副词，much是用来加强too的语气。
Have a try:用too much, too many和much too填空。
1. I have______________ water to water the new trees.
2. It’s _______________ warm. We can go out to play.
3. There are _____________ students flying kites.
4. It doesn’t have _______________ rain in the north of China.
拓展提升：Talk about what you can do on the Internet. And list some that you think are OK for junior high students .