Unit 13 We're trying to save the earth Section B 3a-Self Check课件(共21张PPT)人教版九年级英语全册

(共21张PPT)
九年级·英语· 人教版·全一册
Unit 13　We're trying to save the earth ！
Section B （3a～Self Check）

1.能够识别句子结构，掌握现在进行时、现在完成时、被动语态、情态动词和used to 的用法。
2.能找出本地区环境好的地方和不好的地方，并分析原因。
3.能结合本单元的环境问题和环保措施，完成写作任务。

1.完成任务驱动一，达成学习目标1。
2.完成任务驱动二，达成学习目标2。
3.完成任务驱动三，达成学习目标3。

同学们，在你们居住的地方有哪些环境问题呢？是什么引起的呢？有哪些需要改进呢？
·导学建议·
利用PPT呈现一些被污染的地方和一些环境较好的地方的图片。
一、选词填空
used to　take action　put sth.to good use
the food chain　not only...but also...
1.She 　not only　 plays the guitar well， 　but also　 writes music well.
2.My parents hope that I can 　put　 my study time 　to good use　 .
3.We should 　take action　 at once after we make a decision.
4.I 　used to　 get up early in the morning.
5.Human beings are at the top of 　the food chain　 .
not only
but also
put
to good
use
take action
used to
the food chain
二、句子速译（把下列句子翻译成英文）
1.这条河过去是那么的清澈。
　The river used to be so clean.　
2.我们看到了环境中的很多变化。
　We have seen many changes in the environment.　
3.人们应该更多地乘坐公共交通工具。
　People should take public transportation more.　
The river used to be so clean.　
We have seen many changes in the environment.　
People should take public transportation more.　
4.这条河被工厂污染了。
　The river is polluted by factories.　
The river is polluted by factories.　
5.空气污染变得越来越糟了。
　The air pollution is getting worse and worse.　
The air pollution is getting worse and worse.　
三、动动脑筋
1.Do you live in a town or a city？
2.Do some parts in your town/city have a nice environment？ Why are they nice？
3.Which parts need to be improved？ Why？
新知探究
分小组讨论课本3a中所列的问题，各小组成员依次发表自己的看法并注意记录其他成员的观点，完成3a中的表格。
·导学建议·
学生完成填写后，教师请几个小组代表汇报小组讨论结果。
读写训练
浏览课本3b的写作要求及提示，完成课本3b的写作任务。
一、素材积累
【词汇】
1.低碳生活 　low-carbon life　
2.环境保护 　environmental protection　
3.砍伐 　cut down　
4.把……扔进…… 　throw...into...　
low-carbon life
environmental protection
cut down
throw...into...
5.关掉 　turn off　
6.节约用水 　save water　
7.交通拥堵 　traffic jams　
8.采取措施 　take measures　
turn off
save water
traffic jams
take measures
【参考谚语】
1.水是生命之源。
　 Water is the source of life.　
2.井干方知水可贵。
　We never know the worth of water till the well is dry.　
3.要征服自然就只能遵从自然。
　Only to obey nature in order to overcome nature.　
Water is the source of life.　
We never know the worth of water till the well is dry.　
Only to obey nature in order to overcome nature.　
【开头句】
1.Dear...，
2.I’m glad to tell you something about the environment in our city...
3.With the development of our society，we enjoy a better life.But the environment is being destroyed at the same time.
【中间句】
1.We should protect the environment because the earth is our home.
2.Protecting the environment is protecting ourselves.
3.We should plant more trees，which is good for our environment.
【结尾句】
1.I believe that a better environment can be created in this city and we should all work together to achieve it.
2.I am looking forward to hearing from you！
3.Best wishes，
二、写作指导
1.根据题干可知，本文是一篇 　书信　 ，属于 　应用文　 。
2.文章应使用第 　一、二　 人称。
3.时态主要为 　一般现在　 时。
书信
应用
文
一、二
一般现在
4.列提纲
三、写作练习
　　Dear Sir/Madam，　
　　I’m glad to tell you something about the environment in our city.I have lived in this city since I was born and I love this city very much.　
Dear Sir/Madam，　
　　I’m glad to tell you something about the environment in our city.I have lived in this city since I was born and I love this city very much.　
　　I think that there are beautiful areas in this city，but the air pollution is getting worse and worse now.In our city，the river used to be so clean. But now it is polluted badly. We can not catch fish any more.The rubbish bins are at the bottom of our apartment blocks.There is rubbish coming out of the bins.It makes the environment very terrible.　
　　I think that there are beautiful areas in this city，but the air pollution is getting worse and worse now.In our city，the river used to be so clean. But now it is polluted badly. We can not catch fish any more.The rubbish bins are at the bottom of our apartment blocks.There is rubbish coming out of the bins.It makes the environment very terrible.　
　　The reason is that the rubbish collectors do not come often enough to collect the rubbish.The people living here may also be throwing away too much rubbish.　
　　We can try to ask people to protect our environment.I suggest that rubbish should be taken away more often.　
　　I believe that a better environment can be created in this city and we should all work together to achieve it.　
　　Best wishes，　
　Yours faithfully，　
　　The reason is that the rubbish collectors do not come often enough to collect the rubbish.The people living here may also be throwing away too much rubbish.　
　　We can try to ask people to protect our environment.I suggest that rubbish should be taken away more often.　
　　I believe that a better environment can be created in this city and we should all work together to achieve it.　
Best wishes，　
Yours faithfully，　
复习巩固
1.根据要求，填写课本上Self Check 1中所给单词的不同形式。
2.把课本上Self Check 2中的每个句子与后面的语法项目名称相匹配。
3.让学生分小组讨论减少四种污染的方式有哪些，将相关的短语表达写在Self Check 3的表格中。
4.小组讨论完毕，请不同小组分享自己的讨论结果。