人教版高中英语必修二学案：Unit 4 Wildlife protection Period 2 Language points in Warming up and Reading （I）(5页).doc

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1、-人教版高中英语必修二学案：Unit 4 Wildlife protection Period 2 Language points in Warming up and Reading （I）-第 5 页Book 2 Unit 4 Wildlife protection Period 2 Language points in Warming up and Reading (I) 编者：李兴兵 修编：毛彦芳导学目标1.熟记学案中所列出的单词和短语: decrease, die out, hunt, in danger of, relief 2.通过对这些词汇的理解能够更深层次地理解课文，同时会用这

2、些词汇造句自主合作学习1decrease vt.& vi.减少；(使)变小；或变少 n减少，减小品味典例：If their habitat is threatened or they cannot find enough food，their numbers may decrease.(P25)如果它们的栖息地受到威胁或是它们找不到足够的食物，它们的数量就会减少。They are making every effort to decrease the production cost.他们正尽力降低生产成本。Theres a decrease in the annual birthrate. 年

3、出生率正在下降。归纳拓展：decrease to / by . 减少到/了 a decrease in.在方面减少了 decrease from.to.从减少到increase vi. & vt. 增加；增长；增强 n.增加；增加的数量increase to/by .增加到/了 on the decrease/increase 在减少/增加The price of wheat has decreased by 15%. 小麦价格降低了15%。小试牛刀： 介词填空There has been some decrease _ traffic accidents this year.The club

4、 members decreased _ two hundred compared with last year.The housing price is hoped to decrease _ 10% this year.To our delight, varieties of birds in the forest are _ the increase.2die out灭亡；逐渐消失品味典例：As a result these endangered animals may even die out. (P25) 结果濒危动物甚至可能要灭绝。This kind of bird is dyin

5、g out. 这种鸟即将灭绝。Many old customs have died out. 许多旧的风俗已不复存在。归纳拓展：die of 因而死(一般指死于内因，如疾病、饥饿、情感原因等)die from 因而死(一般指死于外因，如外伤、车祸、污染等)die away (声音、风、光等)慢慢变弱，渐渐消失die down (兴奋、火等)渐弱，渐息，平息 be dying to do sth. 很想做某事；渴望做某事be dying for 渴望 die off (家庭、种族等)相继死亡，(草木)先后枯死 小试牛刀： 用die的相关短语填空 The noise of the car in t

6、he distance.The old traditions are .The leaves of the tree are _.Im something to eat. 3hunt vt.& vi.打猎；猎取；搜寻品味典例：too much hunting in the 1950s (P25) 二十世纪五十年代的过度捕杀At one time man had to hunt to survive. 从前人类要以打猎为生。Weve been hunting for the car keys for the last hour. 过去的一小时里，我们一直在找汽车钥匙。归纳拓展：hunt for

7、sth.搜索；寻找某物 hunt sp. for sb./ sth.搜索某地寻找某人/物hunt after 追逐，追求 go hunting去打猎Many people hunt after fame in their lives but never find it. 很多人一生追逐名誉，但是总不能成功。Hes on holiday in Africa，hunting for animals. 他正在非洲度假，打猎呢。小试牛刀： 完成句子 He has been _ a job. 他一直在找工作。 他们搜遍树林寻找从动物园里逃出来的狮子。They _the wood _the lion es

8、caping from the zoo.4.in danger(of) 在危险中；垂危品味典例：Why are they in danger of disappearing？(P25)为什么它们面临灭绝的危险？You all know he will be in danger if he drives after being drunk.你们都知道，如果他酒后驾车会有危险的。The sick man is in danger of death. 这位病人有死亡的危险。归纳拓展：dangerous adj.危险的 out of danger 脱离危险 be a danger to sb./sth

9、.对某人/某物是个威胁 endanger vt. 危害；危及 endangered adj. 有危险的；濒临灭绝的The girl is in danger because the tiger is dangerous. 女孩在危险中，因为老虎是危险的。完成句子 He is losing his job if he goes on like this. 他再这样下去会丢掉工作的。警察说这个男人对于公众来说是个危险分子。The police said the man was the public.5. relief n(痛苦或忧虑的)减轻或解除；减轻痛苦的事物；缓解；宽慰品味典例：In reli

10、ef Daisy burst into laughter. (P26) 戴茜如释重负，突然笑了起来。It was a relief to be able to talk to someone about it. 能和别人谈谈这件事，感到舒心多了。To our relief，they all got home safely. 他们都安全地到家了，让我们松了口气。Let me relieve you of some of your bags. 让我帮你拿几个袋子吧。归纳拓展：in relief如释重负；松了口气 to ones relief令人感到欣慰的是 What a relief ! 让人放心

11、了！relieve vt.减轻；缓解；消除 relieve sb.of sth.帮某人减轻(负担)小试牛刀： 完成句子1).令我们欣慰的是，这种疾病并没有像预计的那样突然发生。_，the disease didnt burst out as expected.2).(2017高考)It was a relief and I came to a sudden stop just in the middle of the road.翻译_6. mercy n仁慈；宽恕；怜悯；幸运品味典例：Farmers hunted us without mercy. (P26)农民毫不留情地捕杀我们。We ha

12、d no choice and had to be at the mercy of the sea.我们别无选择，只好受大海的摆布。The kind man showed mercy to the child who is homeless.这个好心人对这个无家可归的孩子表示怜悯。归纳拓展：show mercy to 怜悯某人 have mercy on对表示怜悯at the mercy of任凭的摆布；在的支配中 without mercy残忍地，毫无同情心地小试牛刀： 在下列各句中填入恰当的动词或介词 He _ mercy to the people in trouble. They _

13、little mercy on their enemy. The cruel boss usually treats his workers _ mercy.达标检测 完成句子1. The birthrate is 人口出生率正在下降。2. His mother died _ heart disease while his father died _ a traffic accident.3. Seeing the baby fall asleep，the young mother smiled _ _(欣慰地笑了)4. This can put their pets _(在危险中) seri

14、ous illness.5. He is such a _ man and always has mercy those homeless animals，which are usually _the coldness and storm. But sometimes he can show no mercy_ those he doesnt like. 他是一个如此仁慈的人，总是怜悯那些任由寒冷和暴风雨摆布的无家可归的动物。但是有时对那些他不喜欢的动物，他一点也不会怜悯。6. Many traditional customs have _ because they are out of date.因为过时，许多传统风俗已经逐渐消失。