Unit 5 A delicate worldP1 Vocabulary-1 ppt课件（含学案）-（2019）新外研版高中英语选择性必修第二册.rar

1、Unit 5 A delicate world 导学案导学案Period 1 Vocabulary Learning aims:1.Read after the audio of the words to correct your pronunciation;2.Read texts to memorize the Chinese meanings as many as possible;3.Grasp the expanding language points about some key words and finish exercises. Step1 PronunciationStep

2、 2 Words dictation Chinese-English English-Chinese1显著地；戏剧性地2栖息地3后来，随后4胃口，食欲5(使)大大增加，(使)倍增6大混乱；紊乱7离开8倒坍，塌下9大量的，多的10干预，介入11生态12保护13.病毒14(使)减少；(使)变小15.夹子，陷阱16突然增加17事件 语境单词语境单词The island lies in the South-west Pacific Ocean, halfway between Australia and Antarctica. Once, its native inhabitants encounte

3、red challenges. Many wild animals appeared on the island one after another, such as royal penguins, rats, parakeets, and pests. Subsequently, human intervention led to the erosion of the original habitat, caused chaos and destroyed the ecology dramatically. For example, they brought the virus and se

4、t traps on the island. Some species began to multiply, the number of wild animals exploded, and substantial vegetation disappeared. The spread of virus resulted in the decrease of immunity of wild animals. All these incidents show that we human beings owe the island an environmental conservation.这个岛

5、位于太平洋西南部，在澳大利亚和南极洲之间之间。曾经，这里栖居的动物栖居的动物遇到了挑战。许多野生动物在岛上相继出现，例如帝企鹅、老鼠、长尾小鹦鹉和害虫帝企鹅、老鼠、长尾小鹦鹉和害虫等。随后随后，人类的干预干预导致了原始栖息地栖息地的侵蚀侵蚀，造成了混乱混乱，生态遭到了严重严重破坏。例如，他们带来了病毒病毒并在岛上设置了陷阱陷阱。一些物种开姶繁殖繁殖，野生动物的数量激增激增，大量大量 植被植被消失。病毒的传播导致野生动物免疫力下降免疫力下降。所有这些事件事件表明，我们人类应该应该为这个岛的环境保护负责负责。In the postscript, the scientist wrote that t

6、hese worms had no appetite for the nutrient and could only absorb it after it was dissolved.科学家在附言附言中写道，这些蠕虫蠕虫对营养物营养物没有胃口胃口，只有在它溶解溶解后才能吸收它。Step 3 Words transformation1. adj.戏剧的 adv.戏剧地_2. v.保存，保护 n.保护 _3.n.免疫力 adj. 免疫的_4. n. 生态 adj.生态的 _5 n.和谐 adj. 和谐的_6.v.突然增加 n.爆发 _7.v.设陷阱 pt.pp Step 4 Key words1.

7、appetite n. 食欲，胃口，爱好，欲望食欲，胃口，爱好，欲望教材原句 Unfortunately, the cats subsquently developed an appetite for the birds,too. 不幸的是，猫科动物后来也对鸟类产生了食欲。要点必记 develop/ create/arouse an appetite for 对产生欲望; to sbs appetite 合某人的胃口; improve/ promote the appetite 增进食欲; lack appetite 缺乏食欲 satisfy ones appetite 满足食欲2.multi

8、ply v. (使使)成倍增加（了解即可）成倍增加（了解即可）教材原句 They multiplied rapidly and began eating the native vegetation and digging holes, which caused soil erosion. 他们迅速繁殖，开始吃当地的植被和挖洞，造成了水土流失。要点必记 multiply v.（快速）繁殖 multiply by. 乘以 multiplies the risk of. 大大增加.风险考点呈现 1. Three _ (multiply) by four makes twelve. 2. Two mu

9、ltiplied by four _ (equal) eight. 3.It is reported that smoking (大大增加的风险）heart attacks and other health problems. 4.During hot summers, the germs (繁殖得很快)，and can produce food poisoning.3.owe v.欠（帐）欠（帐） 应该做；负有义务应该做；负有义务教材原句 but we humans owe it to the island to give it a happy ending. 但我们人类有愧于这个岛屿，应该

10、给它一个幸福的结局。要点必记 owe sth to sb = owe sb sth 欠某人某物； 归因（功）于. owe it to sb that-clause 把.归于. owe it to sb to do sth 把.归于. owe sb a favour 欠某人一个人情 owing to. 由于，因为考点呈现1. My headteacher gives us much love and care, _ whom we owe many thanks. 2. I owe it to him _ I have succeeded in passing the test. 3. I th

11、ink that you should owe it to yourself _ (get) some professional help with job-hunting. 4. _ (owe) to my lack of experience, I didnt do the work well. 4trap v.设陷阱捕捉，困住。设陷阱捕捉，困住。n. 先进化先进化 圈套圈套 困境困境教材原句 In the 1980s，traps and dogs were used to catch the cats。20 世纪 80 年代，人们用捕猎夹和狗来抓猫。要点必记 be trapped in=

12、be caught/ stuck in 被困在。中考点呈现1.Fire officers used cutting equipment to free his legs，which （trap）under a steel beam.(梁)5.decrease v.使变小使变小 使减少使减少 n. 减少，减少的量减少，减少的量教材原句 But although the virus caused the rabbit population to decrease from130,000 to 10,000.然而，虽然病毒使兔子的数量从 13000 只降到约 10000 只要点必记 动词搭配： de

13、crease(from.)to.(从。)减少到。decrease by 减少了（幅度） decrease in 在某方面减少 名词搭配 on the decrease/ on the increase 减少/增加。考点呈现To be frank with you，the population in our country is （在减少）Step 5 Exercise1.三乘四等于十二。 2.该岛目前的经济在很大程度上归功于旅游业。 3.她有强烈的求知欲。 4.我们常常会遇到挑战，没有人会不受到它的影响(immune) 5 她怒火中烧，感到自己快要爆炸了。 Step 6 FillingMacq

14、uarie Island is a UNESCO World Heritage Site. But when humans 1 (arrive )on the island in 1810, a tragic story began. They took rats and mice with the2. accident and these small animals quickly took over the island, eating the birds eggs and 3 (attack) baby birds. To control the mice and rats, cats

15、4 (bring) to the island, but they developed an appetite for the birds, too. Meanwhile,5 (rabbit) were introduced to the island as a source of food to feed humans. However, rabbits multiplied and caused soil erosion, and the number of cats 6 ate rabbits and birds increased too. To remove all the rabb

16、its from the island, a virus was released onto the island, but the decline of the rabbits caused cats 7 (eat) more native birds. In the 1980s, traps and dogs were used to catch the cats, which caused the number of mice and rats to increase again. Meanwhile, the remaining rabbits 8 (develop) an immun

17、ity to the virus, and their number exploded once again. 9 was clear that the rat, mouse and rabbit problem needed 10 (solve )once and for all. So I am here to participate in the programme to tackle this problem. But this intervention is a long, much-delayed ending to a sadUnit 5 A delicate wordPerio

18、d 1 Vocabulary Page50-51课前准备：选修二课本，导学案，默写本，平板Learning aims:1. Read after the audio of the words to correct your pronunciation;2. Read texts to memorise the Chinese meanings as many as possible;3. Grasp the expanding language points about some key words and finish exercises. Step1 Listen to the audio

19、 and read after it to correct your pronunciation.Task 1 Pronunciation 5mWith the help of context, try your best to read it again and again to fully understand them, which can help you memorise the words and expressions.Step 2 Words dictation 5mWith the help of context, try your best to read it again

20、 and again to fully understand them, which can help you memorise the words and expressions.Finish the dictation on your leading paper.1. adj.戏剧 的 adv.戏剧 地_2. v.保存，保护 n.保护 _3.n.免疫力 adj. 免疫的_4. n. 生态 adj.生态的 _5 n.和谐 adj. 和谐的_6.v.突然增加 n.爆发 _7.v.设陷阱 pt.pp dramaticdramatically conserveconservationimmunit

21、yimmuneecologyecologicalharmonyharmoniousexplodeexplosionStep 3 Words Transformation 5mtraptrapped/trappedStep 4 Key Words 20m With the help of the sentences, recite the phrases and expressions on the leading paper.multiply v. (使)成倍增加考点呈现 1. Three _ (multiply) by four makes twelve. 2. Two multiplied

22、 by four _ (equal) eight. 3.It is reported that smoking_ _ (大大增加的风险）heart attacks and other health problems. 4.During hot summers, the germs _ (繁殖得很快)，and can produce food poisoning.multipliedequals multipulies the risk ofmultiply quickly/rapidly 1. My headteacher gives us much love and care, _ whom

23、 we owe many thanks. 2. I owe it to him _ I have succeeded in passing the test. 3. I think that you should owe it to yourself _ (get) some professional help with job-hunting. 4. (owe) to my lack of experience, to that to get Owing owe v.欠（帐） 应该 做；负有义务 To be frank with you，the population in our count

24、ry is on the decrease. decrease v.使变小 使减少 n. 减少，减少的量1.Three multiplied by four makes twelve. 2.The islands present economy owes a good deal to tourism. 3.She has a great appetite for knowledge.4.Challenges are regular visitors in our life, and nobody is immune to them.5.Such anger filled her that sh

25、e felt she might explode with it. Step 5 Finish the exercises on your leading paper.Step 6 Filling 10mRead the texts again, finish the filling on your leading paper.1.arrived 2. by 3. attacking 4. were brought 5. rabbits6. which/that 7. to eat 8. developed 9. It 10. solvingSummaryMemorise the words and expressions in U5.Diligence makes perfect!