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(共21张PPT)
Unit 8 Protecting the environment
Lesson 4 Global warming
掌握increase、effect、melt、turn off等相关主题词汇，能读懂文本中关于全球变暖的基础信息，梳理“原因-影响-解决措施”的文本逻辑；
通过分段阅读与任务分析，能从文本中提取全球变暖的主要成因，具体影响，以及减缓措施；能归纳文本中类比举例的说明方法，完成环保行动的简短表达；
Learning Goals
1
3
通过讨论和分析，理解“微小生活改变对减缓全球变暖的意义”,能结合自身经验主动分享几个绿色生活建议，树立“个人行动助力环保”的意识，并认同“集体参与应对全球环境问题”的理念。
2
Warming up
1. What problems do you think our environment is facing now
2. Do you think these problems are related to human activities
Look at the picture and discuss.
1. What can you see
I can see…
2. What may the text be about
It may be about…
listening
Read Paragraph 1 and answer questions.
How does the writer start the text
A. By telling a fact.
B. By asking a question.
C. By listing numbers.
Read Paragraph 1 and list the main reasons for global warming.
①__________________________________
②__________________________________
③__________________________________
People burn things like gas, oil, and coal.
They cut down trees and creat a lot of waste.
…
Read Paragraph 2 and answer questions.
How does the writer explain global warming
A. By telling a fact.
B. By giving an example.
C. By making a comparison.
Read Paragraph 2 and answer questions.
How does the writer explain the effects of global warming
A. By telling a fact.
B. By giving an example.
C. By making a comparison.
Read Paragraph 3 and list some simple actions which can slow down global warming.
①__________________________________
②__________________________________
③__________________________________
④__________________________________
Choose to walk or bike instead od driving.
Turn off devices we aren’t using like TVs and lights.
Plant trees and do other “green” activities.
…
Read the passage again and complete the mind map.
Read the passage again and complete the mind map.
Is there anything you can do to slow down global warming Think and tick.
There are many other environmental problems. Think and write about one of them.
Language points
1. The effects of global warming are serious. 全球变暖的影响非常严重。
effective adj. 有效的；（法律等）生效的
affect和effect
affect v. 影响 Smoking affects health.
effect n.影响；效果；结果 have an effect on= affect
Smoking have an effect on our health.
1. The effects of global warming are serious. 全球变暖的影响非常严重。
serious ① 严重的
②严肃的 be serious about 对……认真
Not sleeping enough is a serious problem.
睡眠不足是一个严重的问题
He is a careful and serious man.
他是一个谨慎严肃的人。
2. This causes the sea level to rise, which can lead to more floods and storms.这会导致海洋的水位上升，从而引发更多的洪水和暴风雨。
cause v. 造成；引起；导致 n. 原因； 理由； 事业
cause sth for sb= cause sb sth 给某人带来某事/物（多指麻烦）
cause sb/ sth to do sth 导致某人/某物做某事
3. Thankfully, we can help slow down golbal warming by taking some simple actions. 幸好，我们可以通过采取一些简单的行动来减缓全球变暖。
take action （to do sth ） 采取行动（做某事）
Actions speak louder than words.
行胜于言。/事实胜于雄辩。
4. Turn off devices we aren’t using like TVs and lights.
关掉我们不用的设备，比如电视和电灯。
动词+副词短语，如果是代词，必须用宾格，且放在中间。
turn off 关掉（水电煤气等） Turn off the lights. ( tap/ gas)
turn on 打开（水电煤气等） Turn on the TV. (radion, computer)
turn down 关小、调低（音量温度等） Turn down the TV.
turn up 开大、调高（音量温度等） Turn up the music.
5.Just by making some small changes in our daily lives, we can play a role in addressing global warming. 只要在日常生活中做出一些微小的改变，我们就能在解决全球变暖方面发挥作用。
address ① v. 设法解决；演讲
② n. 地址；演讲
It’s important to address teeagers’ mental problem.
Please send me your address and phone number.
Practice
Fill in the blanks with the proper words.
1. Last month, Lisa broke her leg so ________ .
2. The weather report says it will be a _________ day tomorrow.
3. I need all the students’ ___________ and telephone numbers.
4. There was a fire in the building, but __________no one was hurt.
5. Everyone should take _______ to protect our environment.
seriously
stormy
addresses
thankfully
action

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