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

A delicate world Unit 5 P2 Language points 1 I am standing on Macquarie Island, in the South-west Pacific Ocean, halfway between Australia and Antarctica. Strong winds and stormy(暴风雨般的，激烈的）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 seal（海象，象海豹）, existed in perfect harmony with their natural habitat for thousands of years. 否定副词放在句首引起句子部分倒装 Paragraph 1 be harmonious with 33002 2 Nor would they fail... nor 位于句首时,句子要使用部分倒装。 【句型分析】nor 位于句首时,句子要使用部分倒装。 (1)部分倒装是把be/助动词/情态动词提到主语的前面,即助动词/情态动词/系动词+主语+谓语动词。 (2)否定词位于句首时要部分倒装,高考常考的词汇有: never, not, nor, neither, seldom, hardly, nowhere, little, not until, by no means, in no sense, at no time等。 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. 33002 1 Nor would they fail... nor 位于句首时,句子要使用部分倒装。 “助动词 /情态动词 /系动词 + 主语 + 谓语动词”举例： Tina wouldn’t agree with me. Nor would she discuss with me. I’ve tried very hard to improve my English. But by no means is the teacher satisfied with my progress. Not until the child fell asleep did the mother leave the room. 33002 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(不知不觉地) brought rats and mice(mouse单). These small animals quickly took over（接管；占据） 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 (对......有胃口，对......产生兴趣）the birds, too. Paragraph 2 develop/have an appetite/taste for 33002 Meanwhile(adv. 与此同时), rabbits were introduced to the island as a source of food for humans. (They were) Loose on the island, they did what rabbits do best— they multipled 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(lead to) more cats hunting the birds. The end result was that parakeets, once large in number（在数量上，总共） and native to the island, died out in 1891. 形容词短语作状语，逻辑主语为they Paragraph 3 be native to 原产于 33002 Even after Macquarie Island became an official nature reserve in the 1970s, the rabbis remained out of control. Experts felt it nccessary 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 1 30,000 to around 10,000, it also meant less food for the cats. The rats in consequence(结果) 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. Paragraph 4 33002 【句型分析】该句子中killing up to 60,000 each year为动词-ing短语作结果状语,表示预料/情理之中的结果。 Unfortunately his father died, leaving the family even worse off. His wife died last year, leaving him two children. 比较：不定式做结果状语，表示难以预料的或意料之外的结果，如： I rushed to the door, only to discover that it was locked. 33002 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(大约) 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(彻底地，一劳永逸地) . 山中无老虎，猴子称大王 sth. need doing=sth. need done某事需要被做 Paragraph 5 33002 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(all), without harming the native animals. This intervention is a long, much-delayed(拖延已久的) ending to a sad story, but we humans owe(亏欠) it to the island to give it a happy ending. 应该为……做…… Paragraph 6 33002 owe it to ... to do应该为某人做某事；认为自己有必要为某人做某事 We owe it to the heroes to build a memorial. We owe it to our children to clean up the environment. 33002 You must pay me what you owe. He owes his success to hard work. She still owes ￡3,000 to her father. I think maybe we owe you an apology. Owing to the rain,the match was cancelled. 【词汇拓展】 owe v.欠(钱、账、人情等);归功于;应感谢 owe sb.sth.=owe sth.to sb.　欠某人某物 owe sb.an apology 该向某人道歉 owe sb.a favour 欠某人一个人情 owe...to... 把……归功于……;应感激…… owing adj. 欠着的;未付的 owing to=because of=on account of=due to 因为;由于 33002 1. Nor would they fail... 2. fail to do 3. in harmony with 4. develop an appetite for 5. be introduced to 6. soil erosion 7. out of control 8. remove...from... 9. decrease from... to... 10. in consequence 11. killing up to 60,000 each year 12. trap 13. turn out 14. explode 15. a substantial number of 16. once and for all 17. every last 18. owe it to ... to do nor 位于句首时,句子要使用部分倒装。 未能做成某事，表否定概念；和否定词连用表肯定概念。 与……协调；与……一致；和谐 产生对……的欲望；对……有了胃口 被介绍给，被引见给；向……做介绍 水土流失；土壤侵蚀；泥土流失 失去控制；失控 从……清除……; 除掉；移走；从……中移开/拿走 从……减少到…… 复习回顾 动词-ing短语作结果状语,表示预料/情理之中的结果。 n.陷阱;圈套;计谋;夹子　v.诱捕;设陷阱;困住 (以某种方式)发生；最后是，结果是；产生 v.爆发;激增;(使)爆炸;突然(发出巨响,活跃起来,迸发感情) 因此；结果；因而 大量的；很多；多种 一劳永逸地；彻底地；最后一次 比every语气强烈，全部，每一个 应该为某人做某事；认为自己有必要为某人做某事 33002 $$