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 ... ...