北师大版选择性必修第一册Unit3CONSERVTIONSectionⅠTOPICTALK学案

Section Ⅰ TOPIC TALK

 (主题语境：人与自然之环境保护)

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 TALK

Ⅰ.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.

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，ruin

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 switching (switch) over to Channel One? I ’d like to see what the weather will be like.

②There was a little portable television switched on on the desk.

③Please make sure that all the lights are switched off at night.

夜间请务必将所有的灯关掉。

④Five years later, father switched over to teaching.

五年后，父亲改行教书了。

4．(教材p.109)We all have a role to play in protecting the environment.

在保护环境方面，我们大家都可以发挥作用。

　have a role 起某种作用

But each of the country that I ’m visiting also have a role to play in this effort.

但是我将访问的每一个国家也在这项努力中承担角色。

归纳拓展

play an important role/part in ...

　　　　　　　　　  在……中起重要作用/担任重要角色

play the role of sb ＝play/act the part of sb

    (在剧中)扮演……角色

play the leading role     起带头(主要)作用

活学巧练

⊙单句语法填空/补全句子

①He played the role/part of Hamlet in the play last week.

②The media plays a very important role/part in influencing people ’s opinions.

媒体在影响人们的观念方面起着很重要的作用。

③China is playing an increasingly important part/role in safeguarding world peace.

在维护世界和平方面中国正在起着越来越重要的作用。

5. (教材p.109)Yes, many animals are illegally hunted for something they have.

是的，许多动物因为他们拥有的东西而被非法猎杀。

　illegally adv.非法地，违法地

Ben Johnson ran the Olympic race illegally.

本·约翰逊非法地参加了奥林匹克比赛。

归纳拓展

illegal adj.　　　 违法的，非法的

legal adj.   法律许可的，合法的

legally adv.   法律上，合法地

活学巧练

⊙单句语法填空/补全句子

①Up to two thirds of 14­to 16­year olds admit to buying alcohol illegally (legal)．

②Seeing that she ’s legally (legal) old enough to get married, I don ’t see how you can stop her.

③It ’s illegal to read people ’s private letters without permission.

未经允许看别人的私人信件是不合法的。

hunt vi.& vt.猎取，猎杀

Whales are still being hunted and killed in the Arctic.

北冰洋的鲸类仍然遭到猎杀。

归纳拓展

(1)hunt after　　　　　 追猎(某动物); 追逐(某物)

hunt for sb/sth   寻找某人/某物

hunt up   (在报纸上、书上等)找到(资料等)

(2)hunt n.   狩猎；追捕；搜寻

on the hunt for sth   寻找某物

(3)hunter n.   猎人，狩猎者

活学巧练

⊙单句语法填空/补全句子

④The dog drove the coon (浣熊) up a tree so the hunter (hunt) could shoot him.

⑤You ’ll have to hunt up the word in the dictionary.

⑥The whole neighborhood have been hunting for the missing child.

整条街的人都在寻找那个失踪的孩子。

⑦Many people hunt after fame in their lives but never find it.

很多人一生追逐名利，但是总不能成功。

⑧The police are on the hunt for further clues.

警方正寻找进一步的线索。

6．(教材p.109)That ’s an incredibly urgent matter ...

这是一件非常紧急的事情……

　urgent adj.紧急的，急迫的

She was called away from the meeting to take an urgent phone call.

她被叫出会场去接一个紧急电话。

归纳拓展

活学巧练

⊙单句语法填空/补全句子

①I will not use my savings unless a matter of urgency (urgent) happens.

②The two countries were urged (urge) to put an end to the war, which had lasted over eight years and caused great suffering and losses.

③Father kept urging me to drive (drive) carefully on the icy roads.

④I was afraid of the boy and I had an urge to run away from him.

我害怕那个男孩，很想跑开。

[能力提升]——一句多译

学生们极力要求图书馆经理假期开放图书馆。

⑤The students urge that the manager of the library (should) keep it open during the vacation.

⑥It is urged by the students that the manager of the library (should) keep it open during the vacation.

⑦The students urge the manager of the library to keep it open during the vacation.

(教材p.109)．.. we need to make everyone know hunting these animals is illegal and that these amazing animals are part of the world we live in.

……我们需要让每个人都知道，捕猎这些动物是非法的，这些神奇的动物是我们生活的世界的一部分。

　[句式分析]　本句是一个主从复合句。句中主句动词know后接两个并列的宾语从句，第一个引导词that省略，但是第二个that不能省略。

Bill said that he didn ’t like the party, and he wanted to go home right away.

比尔说他不喜欢这个聚会，他想马上回家。

归纳拓展

活学巧练

⊙补全句子

①We hope, on the contrary, that he will stay at home with us.

恰恰相反，我们希望他和我们待在家里。

②He told me that he was leaving for Japan.

他告诉我他要去日本。

③Everyone knew what happened and that she was worried.

大家都知道发生了什么，也都知道她很发愁。

④I think it necessary that he should stay here.

我认为他有必要留在这里。

⑤—What did he hear?

—That Kate had passed the exam.

——他听说了什么事？

——(他听说)凯特考试及格了。

⑥He has no special fault except that he smokes too much.

他除了抽烟太多之外，没有什么特别的毛病。

⑦That our team will win, I believe.

我相信我们的队会赢。