学习目标:
1.掌握本课的重要词汇短语及句子：
Environment, planet, earth, plant, part, play a part, peace, sea, sky, astronaut, apartment, less free time, in 100 years , fewer people , on computer, on the e arth, in the future, on weekends , the same as, be in great danger
2.掌握以下重要句型
What will the future be like?
Cities will be more p olluted.
Will people use money in 1 00 years?
No, they won’t .Everything will be free.
