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A green world
Revision(主动变被动)
1.Water pollution often kills many fish.
Many fish are often killed by water pollution.
2.Air pollution harmed the man.
The man was harmed by air pollution.
3.We will improve the environment.
The environment will be improved by us.
New words
survey 调查
empty 空的
an empty cup
dust 灰尘
harmful adj.有害的
harm n. 伤害，损害
do harm to/be harmful to 对…有害
soil 土壤
in place
在正确的位置
keep soil in place
固定土壤
survey 调查
empty 空的
dust 灰尘，尘土
harmful 有害的
soil 土壤
in place 在正确的位置
What is the world like now ?
There is much pollution and waste.
Pollution has become a serious problem all around the world.