Unit 4 Global warming Writing 课件（20张PPT）

课件20张PPT。Reading for Writing Clean up Your Butts and BagsReading This passage is mainly aboutCigarette butts are bad for the environment and people shouldn’t throw them away.
B. Plastic bags are a danger to the environment and people should use fewer and recycle them.
C. Cigarette butts and plastic bags are common but dangerous to the environment, so cleaning them up would improve the quality of the environment.topic concludingA perfect paragraph usually consists of:
topic sentence
supporting sentences
concluding sentencesIn China, 2 billion plastic bags are used every day.
This is a huge problem because they last from 20 to 1000 years in the environment.
Plastic bags kill up to one million seabirds, 100,000 sea mammals and countless fish each year worldwide.numbersconclusion：The writer uses _________to describe how dangerous plastic bags are to the environment.Plastic bags last from 20 to 1000 years in the environment.
This is a huge problem.This is a huge problem because they last from 20 to 1000 years in the environment.conclusion：The writer uses some______________
sentences instead of short sentences.long/ compound(1)If we do not recycle these resources, we will lose them.
(2)In China, people use 2 billion plastic bags every day.(1)If they are not recycled, these resources are lost to us.
(2)In China, 2 billion plastic bags are used every day.conclusion：The writer uses __________ instead of active voice.passive voice(1) This is a problem because….
(2)They float in air and water….(1)This is a huge problem because….
(2) They float easily in air and water….conclusion：The writer uses __________ properly and flexibly.adj. / adv. Suggestion: it would be better if we could use advanced adjectives or adverbs.A large number of these (plastic bags) become litter.An enormous number of these (plastic bags) become litter.When we are writing, we had better use __________ words or phrases to connect the sentences, such as, firstly, secondly, then, finally, besides, indeed, what’s more/worse…
transitionalThere are several reasons for this. There are several reasons for this._______, they are made from…are lost to us. _______, we cannot ignore the fact that in China, 2 billion…become litter.______, this is a huge problem because they last from 20 to 1,000 years in the environment. ___________,they float easily…firstly， indeed ，secondly ， what’s worseFirstlySecondlyIndeedWhat’s worse Fill in the blanks using the following words. 全国网友热烈祝贺西安成功发射大雁塔！Congratulate Xi’an on the successful launch of Big Wild Goose Pagoda!1/5
the 5th floor
16 times
75%
100 million…urban Chinese breathe heavily polluted air.…can’t see the street…The air quality of Beijing is…worse than that of New York City.Burning coal provides …the energy.cars in ChinaWriting 请根据以上的新闻报道和材料写一个段落(80字左右），包含以下要点：
①空气污染的事实；
②原因；
③你的建议。In your paragraph, what sentence will you use as a topic sentence?
To support your topic ,what details or evidence will you use?
What brief suggestions will you make to conclude your paragraph?
What useful expressions will you use to bring in the facts, reasons and suggestions?In groups, answer the following questions and finish the outline in the handouts. Useful expressions We cannot ignore the fact that…
No one can deny the fact that…
There are several reasons for...
The reasons for this can be listed as follows.
It would be wise of sb. to do…
It is more advisable to do…
It would be better if we….Evaluation in pairsGeneral remarks(总体评价）:
___________________________________
Nice words and sentences（划出好词好句）：
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Your suggestions(你们认为需要修改的地方以及如何修改）
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HomeworkRead carefully the rest of the passage and analyse the development of the whole text. In groups, talk about what writing skills you have learnt from the passage.