人教版九年级英语下册《We're trying to save the earth!》SectionA PPT教学课件(第1课时)，共31页。
What pollution do you know?
The factories that burn coal pollute the air with a lot of black smoke.
Factories put waste into the river. people litter everywhere.
There are too many cars on the road.
Some people play loud music in public.
People use a lot of plastic bags in their daily life.
常用短语
play an active part in (doing) sth. 积极参与（做）某事
play an important part in (doing) sth. 在某事中发挥重要作用
[拓展]play a part 在……中扮演角色 , 与 play a role 同义。
He was invited to play a part in this TV play.
他被邀请参加这个电视剧的演出
Linda ____________ of Snow White in the play.
琳达在这部话剧中扮演了白雪公主的角色。
[观察] Our actions can make a difference and lead to a better future! 我们齐心协力就能带来变化，创造更加美的未来。
[探究] make a difference 起作用；有影响
make a difference to ... 对……产生影响
[注意] difference前面可加修饰语，如big, great等，表示受影响的程度。
锻炼对她产生了重大影响。
Exercise ____________________ to her.
... ... ...
关键词：We're trying to save the earth! PPT课件免费下载，.PPT格式；