新教材北师大版高中英语选择性必修第一册Unit3 Conservtion学案.doc

Unit 3 Conservtion一、根据提示回顾相应的主题词汇图1：在过去的40年里 in the past 40 years；下降了 decrease by图2：成千上万的物种 thousands of species；灭绝的边缘 the edge of extinction图3：增长到 rise to ；对……产生令人震惊的影响 have a shocking impact on ...二、选用相关主题词汇并根据提示翻译下面句子1．在过去的40年里，野生动物的数量减少了50%In the past 40 years, the number of wild animals has decreased by 50 percent.2．我们已经把成千上万的物种逼到了灭绝的边缘We ’ve driven thousands of species to the edge of extinction.3．随着人口增长到75亿，我们对其他物种产生了令人震惊的影响As the human population has risen to 7.5 billion, we have had a shocking impact on other species.三、回答问题1．What are the consequences of the impact we have on the environment？(Answers may vary)Potentially enormous losses.2．What is nature to us？(Answers may vary)Nature is not “nice to have” — it is our life­support system.Section Ⅰ TOPIC TALKⅠ.根据词性及汉语意思写出英语1．plastic adj.　　　　　 塑料制的2．mining n. 采矿业3．item n. 一项，一条4．informative adj. 有教育意义的；知识性强的5．switch vi.& vt. 转换，改变6．rhino n. 犀牛7．horn n. (牛、羊等头上的)角Ⅱ.拓展识变化1．conservation n．保护→conserve v．保护2．destroy vt.破坏；毁掉→destruction n．破坏；毁掉→destroyer n. 破坏者3．recycle vi.& vt.再利用，回收利用→recyclable adj.可回收的→unrecyclable adj.不可回收的4．threat n．威胁； (灾难等坏事)发生的可能→threaten v．威胁5．illegally adv.非法地，违法地→legally adv.合法地→legal adj.合法的→illegal adj.非法的6．hunt vi.& vt.猎取，猎杀→hunter n．猎人7．extinct adj.灭绝的，绝种的→extinction n．灭绝，绝种8．incredibly adv.非常地，极端地→incredible adj.难以置信的；极好的9．urgent adj.紧急的，急迫的→urgency n．急迫，紧急→urge v．敦促Ⅲ.语境记短语1．have a role to play　　　　　　　　 起某种作用2．do his part in the job 尽他的职责3．in order to protect the planet 为了4．threats to the environment 对……的威胁5．switch to different forms of power 转向6．as soon as possible 尽可能快地7．the amount of waste ……的数量8．protect animals in danger 处于危险中9．at present 现在，目前10．stop this from happening 阻止……做某事Ⅳ.仿写练句式1．[教材原句]　It was by Professor Linda Wei, the environmental expert, wasn ’t it?[句式分析]　反意疑问句[佳句仿写]　他们工作努力，不是吗？They work hard, don ’t they?2．[教材原句]　... I really feel strongly that we need to change the way we live in order to protect our planet.[句式分析]　way后的定语从句[佳句仿写]　我不喜欢你跟她说话的方式。

I don ’t like the way you speak to her.3．[教材原句]　I feel very lucky indeed to have Dr. Bradshaw with us today.[句式分析]　形容词后接不定式[佳句仿写]　约翰很幸运得到了这份工作John is lucky to get the job.4．[教材原句]　... we need to make everyone know hunting these animals is illegal and that these amazing animals are part of the world we live in.[句式分析]　两个并列的that引导的宾语从句，第二个that不能省略[佳句仿写]　他说那本书很有趣，所有孩子都喜欢读He said (that) the book was very interesting and that all the children like to read it.核心词汇1．(教材p.50)Ways We Destroy Nature我们破坏自然的方式　destroy vt.破坏；毁掉That will destroy the reputation of our products.那将毁掉我们产品的声誉。

归纳拓展(1)destroy sb　　　　　 毁掉某人(的一生)be destroyed by fire 被大火烧毁(2)destruction n. 破坏，毁坏destroyer n. 破坏者，起破坏作用的东西 [易混辨析]　destroy，damage，ruindestroy表示“毁坏”，通常指彻底的毁掉或毁灭，往往暗示无法或很难修复，有时用于比喻用法中damage表示“损害，损坏”，通常是指部分性的损坏，往往暗示损坏后价值、效率、功能等会降低，有时用于比喻用法中ruin表示“毁坏，破坏”，强调毁灭的彻底性，并且是一次性的行为这种毁灭也许没有多大力量，但其严重性却使其不能修复这种毁灭强调长期损坏过程所导致的结果活学巧练⊙单句语法填空/补全句子①The company is the world ’s largest destroyer (destroy) of tropical forests.②The destruction (destroy) of such species could prevent researchers from finding cures for certain diseases.③This hospital attached to the medical college nearby was destroyed in the flood.这所附属于附近医学院的医院在洪水中被摧毁了。

⊙小话题写作④在发生于2014年8月3日的地震中，所有的房屋和建筑物都被摧毁了，而且(这场地震)给云南造成了巨大的损害那时的鲁甸几乎成了一片废墟In the earthquake that happened on 3 August 2014，all the houses and buildings were destroyed, and great damage was caused to Yunnan. At that time Ludian was almost in ruins.2．(教材p.108)After the lecture, I can see that the use of oil and coal is one of the biggest threats to our planet.听了讲座后，我了解到石油和煤炭的使用是我们的星球最大的威胁之一　threat n．威胁；(灾难等坏事)发生的可能As the months went by, the rabbits saw that I was no threat and didn ’t escape.几个月过去了，兔子们看出来我对它们没有威胁，也不再逃走了。

归纳拓展(1)a threat to/of sb/sth　　 对某人/某物构成威胁(2)threaten v. 威胁；恐吓threaten sb (with sth) (用某物)威胁某人threaten to do sth 恐吓要做某事(3)threatened adj. 受到威胁的活学巧练⊙单句语法填空/补全句子①He was threatened (threat) with dismissal if he continued to turn up late for work.②Despite the threat of war, people went about their work as usual.尽管战争一触即发，人们仍像平时一样工作③The farmer threatened to shoot any dog that killed one of his sheep.那个农场主扬言说，无论哪条狗，如果咬死他的一只羊，他就要开枪打死它④Pollution is a threat to the continued existence of this species.污染对这一物种的继续生存造成了威胁。

3．(教材p.108－109)We definitely need to switch to different forms of power as soon as possible.我们确实需要尽快转换到不同形式的能源　switch vi.& vt.转换，改变The law would encourage companies to switch from coal to cleaner fuels.该法律将鼓励公司从煤炭转向更清洁的燃料归纳拓展(1)switch off＝turn off　　 把……关掉，关上switch on 开着switch over 转换频道，转变switch (from sth)to ... (从某事)转变到……switch roles 转换角色switch A with B 把A与B交换(2)switch n. 转换，改变活学巧练⊙单句语法填空/补全句子①Do you mind me。