Unit 5 A delicate world Understanding ideas Language Points 课件-2024-2025学年高中英语外研版（2019）选择性必修第二册

Unit 5 A delicate world Language Points 1 Para 1 I am standing on Macquarie Island, in the South-west Pacific Ocean, halfway between Australia and Antarctica. Strong winds and stormy seas have helped sculpt its long, thin shape. The green grass and bare rock of its landscape contrast dramatically, giving it a wild and natural beauty. No visitor would think it surprising that the island is a UNESCO World Heritage Site. Nor would they fail to imagine how its native inhabitants,including royal penguins, king penguins,and elephant seals, existed in perfect harmony with their natural habitat for thousands of years. 熟词生义： sculpt: 使具有某种形状 核心词组及词汇： fail to do未能做某事 in harmony with...与...和谐共处 dramatically显著地 句型句式: 1. ... giving it a wild and natural beauty. 非谓语动词v-ing作结果状语 2. Nor would they fail.... Nor否定词位于句首要引起部分倒装,即Nor+情态动词+主语+其他； imagine连接宾语从句 (1)当含有否定意义的词或短语位于句首(主句句首/从句句首)时,句子需用部分倒装语序,即：否定词＋助动词/情态动词/be＋主语。 (2)这样的词或短语有： 表全部否定意义的副词：never/not/neither/nor/nowhere 表部分否定意义的副词：hardly/scarcely/rarely/seldom/little 表“绝不”的短语：at no time/by no means/in no case/in no way/on no condition/on no account 部分倒装 ①(应用文之求助信)我的英语说得不准确,也不流利。我很少有勇气用英语与别人交流。所以你能帮我提高我糟糕的英语水平吗？ Neither do I speak English correctly ________ fluent in English．Rarely ___________________________________________ in English．So could you please help me improve my poor English? nor am I do I have the courage to communicate with others 注意：当使用“neither...nor...”结构时,如果“neither”部分已经倒装,那么“nor”部分通常也需要倒装,以保持句子的平衡和一致性。 ②在其他任何地方你再也找不到这样设备齐全的自习室了。我保证你绝对不会失望。所以请接受我诚挚的邀请。 Nowhere else ___________________________________________． I promise that ________________________________．So please accept my sincere invitation． ③I wasn't aware that bad fortune might be the door waiting to be opened until I experienced the accident． →___________________________________________ bad fortune might be the door waiting to be opened．(倒装句) can you find such a well-equipped self-study room by no means will you be disappointed Not until I experienced the accident was I aware that Para 2 But the island’s more recent history tells a different story. It’s a tragic story that began in 1810 when humans arrived on the island. In their ships they unknowingly brought rats and mice. These small animals quickly took over the island,eating the birds’eggs and attacking baby birds. Cats were brought to the island to control the rats and mice. Unfortunately,the cats subsequently developed an appetite for the birds,too. 核心词组及词汇： take over接管 develop an appetite for对...产生兴趣/食欲 subsequently后来,随后 句型句式: 1. ... eating the birds’eggs and attacking... 非谓语动词v-ing作伴随状语 Para 3 Meanwhile,rabbits were introduced to the island as a source of food for humans. Loose on the island,they did what rabbits do best—they multiplied rapidly and began eating the native vegetation and digging holes,which caused soil erosion. The exploding rabbit population provided plentiful food for the cats, meaning that the number of cats also increased. This in turn led to more cats hunting the birds. The end result was that parakeets,once large in number and native to the island, died out in 1891. 核心词组及词汇： be introduced to 被引进 soil erosion土壤侵蚀 in turn转而=as a result(表结果)=in consequence lead to (doing)导致 die out灭绝 multiply v. 使大大增加 句型句式: 1. Loose on the island, they...是形容词（短语）作状语 用法：其逻辑主语为句子的主语，是由主语相同的两个句子改写而成的。 e.g. We reached the top of the hill. We were tired and hungry. =We reached the top of the hill, tired and hungry. Para 4 Even after Macquarie Island became an official nature reserve in the 1970s，the rabbits remained out of control. Experts felt it necessary to come up with a plan to remove all the rabbits from the island. With this goal in mind，a virus was released onto the island. But although the virus caused the rabbit population to decrease from 130，000 to around 10，000，it also meant less food for the cats. The cats in consequence turned their attention—and their stomachs—back to the native birds，killing up to 60，000 each year. In the 1980s，traps and dogs were used to catch the cats. The last Macquarie Island cat was caught in 2000. 核心词组及词汇： out of control失控 come up with提出 remove...from...使...从...消失 decrease from...to...从...减少到... in consequence结果 up to 达到 virus n.病毒 trap n. 夹子，陷阱 Para 5 But as the saying goes，“While the cat’s away，the mice will play. ”With the departure of the cats from the island，the mouse and rat population started to increase. And remember those 10，000 or so rabbits? It turned out that they developed an immunity to the virus，and their numbers exploded once again. Then，in 2006，the rabbits’ digging caused some land to collapse，and killed a substantial number of penguins. This incident made it clear that the rat，mouse and rabbit problem needed solving once and for all. 核心词组及词汇： turn out原来是，结果是(新坐标P126) a substantial number of大量的 need doing=need to be done...需要... once and for all最终，彻底地 departure n. 离开 explode v. 突然增加 collapse v. 倒坍，塌下 incident n. 事件 Para 6 So，I am here on Macquarie Island to participate in the programme to tackle this very problem. The first step involved poison being dropped from helicopters. The next step is to remove the last remaining invading species，and that’s where I come in—with my dogs. They have been trained to find every last one，without harming the native animals. This intervention is a long，much-delayed ending to a sad story，but we humans owe it to the island to give it a happy ending. 核心词组及词汇： every last强调每一个/全部 owe it to sb to do sth认为应该为某人做某事 e.g. 我们应该为英雄们建一座纪念碑。 We owe it to the heroes to build a memorial. intervention n.干预，介入 Review: What are the expressions for cause and effect? Loose on the island, they did what rabbits do best-they multiplied rapidly and began eating the native vegetation and digging holes, which caused soil erosion. This in turn led to more cats hunting the birds. The end result was that parakeets, once large in number and native to the island, died out. The cats in consequence turned their attention-and their stomaches-back to the native birds, killing up to 60,000 each year. It turned out that they developed an immunity to the virus, and their numbers exploded once again. final result as a result/consequence, consequently The unexpected result was that Summary: words and expressions for cause and effect Cause Effect because, as, since, for cause because of, owing to, due to, on account of, thanks to, result from lead to, result in, contribute to, give rise to, in consequence as a result of, as a consequence of as a result, as a consequence, consequently the reason for..., the reason why..., the cause of... therefore, so, hence, The end result is... It turned out that... Translation 1. 绝不是只有一种方法可以解决这个问题。(倒装) By no means is there only one way to solve this problem. 2. 他们几乎没有意识到危险正在逼近。(倒装) Little did they realize that danger was approaching. 3. 他觉得自己应该为这个团队完成这个项目。 He feels he owes it to the team to finish the project. 4. 他没有听从医生的建议，因此病情恶化了。 He didn’t follow the doctor’s advice, and in consequence, his condition worsened. Homework $$