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师梦圆初中英语教材同步人教版七年级上册1a—2e下载详情
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has fallen

endangered

strongest

no longer

die

cut off

harmful

Not only have we hurt the animals, but also we have destroyed our living environment.

In the past

Now

In the past

Now

1>There used to be ……but now…..

2> …… used to be …..but now…….

In the past

Now

Free talk

It’s our duty to protect the environment.

We should/ must /can……

We need to…..

We are supposed/expected to…..

We’d better (not) do….

Remember to do / not to do…

Doing sth is a good habit.

resuse, litter ,recycle,stop doing sth,throw …into…,turn off,close down some factories,use plastic bags,prevent /keep sb from doing sth,keep…clean, ride a bike instead of driving, put … to good use

Writing practice

六月五日是世界环保日,我们周围的环境变得越来越糟糕,污染越来越严重。环境问题影响着人们的工作,学习,生活等,而我们的工作,生活,生产等又使环境污染越来越严重,如何保护我们的环境?请以“How to protect our environment” 为题写一篇短文。

提示:存在的问题:1.水污染越来越严重

2. 砍伐森林严重

3. 大气污染严重