2021新版北师大版选择性必修第一册英语Unit 3 Section Ⅰ　Topic Talk & Lesson 1 The Sixth Extinction ppt课件.pptx

1、Unit 3 Conservation Section Topic Talk 毁掉毁掉 11. /aIt m/ n.一项一项,一条一条 12. / risaIk l/ vi.知识性知识性 强的强的 14. / ret/ n.威胁威胁;(灾难等坏事灾难等坏事)发生的可能发生的可能 15. /swIt / vi.不平常的不平常的 18. /m s/ adj.大量的大量的 19. /ve rid/ adj.各种各样的各种各样的,形形色色的形形色色的 20. /dIkris/ vi.减少的量减少的量 21. / fekt/ vt.影响影响 species unusual mass varied dec

2、rease affect 二、短语英汉互译二、短语英汉互译 1.wipe out 2.cause for concern 3.be at risk 4.solar energy 5.off the coast 彻底毁灭彻底毁灭 引起忧虑引起忧虑 处境危险处境危险,受到威胁受到威胁 太阳能太阳能 远离远离海岸线海岸线 6. 起某种作用起某种作用 7. 尽自己的职责尽自己的职责 8. 寻找寻找 9. 消失消失;绝迹绝迹,灭绝灭绝 10. 把把归咎于归咎于 have a role do ones part hunt for die out be to blame 阅读理解 一、阅读课文一、阅读课文“

3、THE SIXTH EXTINCTION”,判断正误判断正误(T/F) 1.It is not common to see animals extinct in our planet.( ) 2.The death of the dinosaurs occurred in the forth mass extinction.( ) 3.Species are dying out at an alarming rate.( ) 4.Up to three-fourths of species will be extinct if there is a sixth mass extinction.

4、( ) 5.A sixth extinction is unavoidable.( ) F F T T F 二、阅读课文二、阅读课文“THE SIXTH EXTINCTION”,选择正确选择正确答案答案 1.Which of the following is not included in the causes for the last five extinctions? A.Global warming. B.Volcanic eruptions. C.The decrease of the oxygen content of the sea. D.Human activity. D 2.W

5、hich of the following doesnt belong to human activity? A.Deforestation. B.Air and water pollution. C.Changes in sea levels. D.Overfishing. C 3.What is the purpose of the last paragraph? A.Appeal to people to protect the Earth. B.Blame people for destroying the environment. C.Urge the government to t

6、ake action. D.Warn the public to reduce their destructive behaviour. A 4.What contributed to the survival of the black robin? A.The restoration of their habitats. B.The efforts of the wildlife workers. C.The removal of animals hunting them. D.The chicks raised by the workers. B 三、仔细阅读课文三、仔细阅读课文“THE

7、SIXTH EXTINCTION”,并根据课并根据课 文内容将短文补充完整文内容将短文补充完整 Up to now,there 1. (be) five mass extinctions,where entire species are wiped 2. ,among which the 3. (three) one is known as “Great Dying”.There are 4. (vary) reasons resulting in the extinction,5. (range) from volcanic eruptions to 6. (change) in sea l

8、evels. has been out third varied ranging changes Many experts believe we are entering the sixth extinction and human activity is 7. (blame).The rate at 8. animals are dying out 9. (become) a cause for concern.We need to take steps to save endangered species and stop destroying 10. planet where we li

9、ve. to blame which becomes the 1.Our environment needs protection.(Page 50) 我们的环境需要保护。我们的环境需要保护。 need v.需要需要 The car needs washing. The car needs to be washed. 这辆车需要洗了。这辆车需要洗了。(need doing 主动表被动主动表被动,相当于相当于need to be done) 【合作探究】【合作探究】 读一读读一读 细观察细观察 阅读下列句子阅读下列句子,写出句中与写出句中与need 相关的词组和含义相关的词组和含义 There

10、is no need to worry about him. 词组词组 There is no need to do 含义含义 做做没有必要没有必要 There is no need for further discussion on the issue. 词组词组 There is no need for 含义含义 没有必要没有必要 Relief should be given to people in need. 词组词组 in need 含义含义 有需要的有需要的 They printed another 10,000 books to meet the needs of the rea

11、ders. 词组词组 meet the need(s) of 含义含义 满足满足的需求的需求 You neednt have taken a taxi.It is only 3-minute walk. 词组词组 neednt have done 含义含义 本不需要做本不需要做 说一说说一说 勤归纳勤归纳 记一记记一记 长知识长知识 与与need doing 主动表被动主动表被动,相当于相当于need to be done用法相似的用法相似的 动词还有动词还有:want,require,deserve 等等。等等。 The heroic deed deserves praising. The

12、heroic deed deserves to be praised. 英雄事迹值得赞扬。英雄事迹值得赞扬。 【即学即用】【即学即用】 单句语法填空单句语法填空 A friend need is a friend in deed. The meat needs (roast) before being served. There is no need (bother) him.We can manage it by ourselves. in roasting/to be roasted to bother 完成句子完成句子 我们本不需要再买这些椅子。储藏室有多余的。我们本不需要再买这些椅子。

13、储藏室有多余的。 We all these chairs. There are some extra in the storage room. 我们书店很需要哈利我们书店很需要哈利 波特系列的书。波特系列的书。 The Harry Potter series in our store. neednt have bought are in great need 2.I really feel strongly that we need to change the way we live in order to protect our planet.(Page 50) 我确实强烈地感到我确实强烈地

14、感到,为了保护我们的星球为了保护我们的星球,我们需要改变我们我们需要改变我们 的生活方式。的生活方式。 剖析剖析 the way后加从句时后加从句时,表示表示“的方式的方式”,通常可以用通常可以用in which,that引导或者不加引导词。引导或者不加引导词。 I dont like the way you talk to your mom. I dont like the way that you talk to your mom. I dont like the way in which you talk to your mom. 我不喜欢你跟你妈妈讲话的方式。我不喜欢你跟你妈妈讲话的方

15、式。 【合作探究】【合作探究】 读一读读一读 细观察细观察 阅读下列句子阅读下列句子,用相似的结构改写句子用相似的结构改写句子 I was never allowed to sing the way I wanted to. I was never allowed to sing the way that/in which I wanted to. Colour is the key to making a room feel the way you want it to feel. Colour is the key to making a room feel the way that/in

16、 which you want it to feel. 说一说说一说 勤归纳勤归纳 【即学即用】【即学即用】 单句语法填空单句语法填空 The music cant be presented today the way it was in 1908 or 1958. The music cant be presented today the way in it was in 1908 or 1958. that which 翻译翻译句子句子 它必须继续往前走它必须继续往前走,因为世界运作的方式是不一样的。因为世界运作的方式是不一样的。(用用 至少两种方式翻译至少两种方式翻译) It has t

17、o continue to move,because the way (that/in which) the world works is not the same. 3.Conservation is a state of harmony between men and land. (Page 51) 保护是一种人与土地的和谐状态。保护是一种人与土地的和谐状态。 state n.状态状态 He is now in a critical state.If he can pull through,everything will be fine. 他现在处于关键的状态。如果他能挺过去他现在处于关键

18、的状态。如果他能挺过去,一切都会好起来。一切都会好起来。 【合作探究】【合作探究】 读一读读一读 细观察细观察 阅读下列句子阅读下列句子,写出句中与写出句中与 state相关的词组、词性和含义相关的词组、词性和含义 The state-run news agency released a breaking news this morning. 词性词性 形容词形容词 含义含义 国营的国营的 The law did not state clearly what information is fake. 词性词性 动词动词 含义含义 说明说明 Which of the following stat

19、ements is true? 词性词性 名词名词 含义含义 说法说法 The office made a public/an official statement to clarify the matter. 词组词组 a public/an official statement 含义含义 公开公开/官方声明官方声明 说一说说一说 勤归纳勤归纳 【即学即用】【即学即用】 单句语法填空单句语法填空 At the beginning,the US was made up of 13 (state). I was a confused state of mind and couldnt under

20、stand what he was talking about. 完成句子完成句子 肉处于冰冻的状态肉处于冰冻的状态,所以我们不能直接用。所以我们不能直接用。 The meat was so we couldnt use it directly. states in in a frozen state 4.How many times up to today has life on Earth almost died out?(Page 52) 到今天为止到今天为止,有多少次地球上的生命几乎灭绝有多少次地球上的生命几乎灭绝? up to today 直到今天直到今天 Up to today,o

21、ver 50 candidates have applied for the job. 到今天为止到今天为止,已有已有50多个人申请了这份工作。多个人申请了这份工作。 【合作探究】【合作探究】 读一读读一读 细观察细观察 阅读下列句子阅读下列句子,写出句中与写出句中与 up to 相关的词组和含义相关的词组和含义 It is up to you to decide whether to participate or not. 词组词组 up to sb 含义含义 取决于取决于 The stadium can seat up to 60,000 people. 词组词组 up to 含义含义 多

22、达多达 What has he been up to recently? 词组词组 be up to sth 含义含义 在做某事在做某事(非正式非正式) 看一看看一看 助记忆助记忆 说一说说一说 勤归纳勤归纳 【即学即用】【即学即用】 单句语法填空单句语法填空 They (receive) over 50 complaints about the noise up to now. It is up you to decide whether to accept the offer or not. have received to 翻译翻译句子句子 多达多达5,000人参加了他的葬礼。人参加了他

23、的葬礼。 我很好奇你最近在搞什么鬼。我很好奇你最近在搞什么鬼。 Up to 5,000 people attended his funeral. I was wondering what you have been up to recently. 5.And the fifth event,which occurred 66 million years ago, caused the death of the dinosaurs.(Page 52) 第五次物种大灭绝事件发生在第五次物种大灭绝事件发生在6,600万年前万年前,导致了恐龙的死导致了恐龙的死 亡。亡。 occur vi.发生发生 A

24、 great decline in young workforce is likely to occur in China. 中国可能会出现年轻劳动力大幅减少。中国可能会出现年轻劳动力大幅减少。 【合作探究】【合作探究】 读一读读一读 细观察细观察 阅读下列句子阅读下列句子,写出句中与写出句中与 occur相关的词组、词性和含义相关的词组、词性和含义 Cultural differences occur wherever you go. 词性词性 动词动词 含义含义 存在存在 I dont want anything bad to occur to you. 词组词组 occur to sb

25、含义含义 发生在某人身上发生在某人身上 It occurred to me that I could borrow a bike from you. 词组词组 occur to sb 含义含义 某人想到某人想到 记一记记一记 长知识长知识 【即学即用】【即学即用】 单句语法填空单句语法填空 A terrible accident (occur) yesterday, claiming 15 lives. It occurred him that he had an important meeting to attend the next morning. occurred to 完成句子完成句

26、子 他突然间想到他把钥匙落在办公室了。他突然间想到他把钥匙落在办公室了。 that he had left the key in the office. 翻译句子翻译句子 我从来没有想过要不辞而别。我从来没有想过要不辞而别。 It suddenly hit/struck/occurred to him It never occurs to me to leave without saying. 6.Many scientists say we are now entering the Earths sixth mass extinction.This time,human activity w

27、ill be to blame. (Page 52) 许多科学家说许多科学家说,我们现在正在进入地球的第六次大灭绝。这我们现在正在进入地球的第六次大灭绝。这 一次一次,人类活动将是罪魁祸首。人类活动将是罪魁祸首。 be to blame 该受责备该受责备(无需用被动形式无需用被动形式) It is the pedestrian,not the driver,that is to blame. 是行人而不是司机该受责备。是行人而不是司机该受责备。 【合作探究】【合作探究】 读一读读一读 细观察细观察 阅读下列句子阅读下列句子,写出句中与写出句中与blame 相关的词组和含义相关的词组和含义 Sh

28、e was blamed for frequent absence from school. 词组词组 be blamed for 含义含义 因为因为受责备受责备 It is unfair to put the blame on the girl. 词组词组 put the blame on sb 含义含义 将责任归咎于将责任归咎于 She should be blamed for the failure of the system. 词组词组 should be blamed for 含义含义 应该因为应该因为而被责备而被责备 记一记记一记 长知识长知识 【即学即用】【即学即用】 单句语法填

29、空单句语法填空 Lots of people find it hard to get up in the morning and put the blame the alarm clock. The man insisted that he was innocent, (blame) that the police were not doing their duty. Who is (blame),the system or the people involved? on blaming to blame 完成句子完成句子 他把责任推给其他队员他把责任推给其他队员,逃脱了干系。逃脱了干系。 H

30、e got away by the other team members. 是你该为整个事故负责任。是你该为整个事故负责任。 It is you that for the whole accident. putting the blame on are to blame/should be blamed 7.Although it is not unusual for species to die out naturally, the rate at which this is now happening is cause for concern. (Page 52) 虽然物种的自然灭绝并不罕

31、见虽然物种的自然灭绝并不罕见,但现在灭绝的速度让人担忧。但现在灭绝的速度让人担忧。 rate n.率率,价格价格 What is the rate for a standard room today? 今天标准间的价格是多少今天标准间的价格是多少? 【合作探究】【合作探究】 读一读读一读 细观察细观察 阅读下列句子阅读下列句子,写出句中与写出句中与 rate 相关的词性、词组和含义相关的词性、词组和含义 The exchange rate between Chinese Yuan and US dollar is 7.13 for today. 词组词组 exchange rate 含义含义

32、汇率汇率 The global temperature is increasing at an alarming rate. 词组词组 at an alarming rate 含义含义 以惊人的速度以惊人的速度 How would you rate this movie,five or four stars? 词性词性 动词动词 含义含义 评价评价;划分等级划分等级 At any rate,the package will be delivered to you in three days. 词组词组 at any rate 含义含义 不管怎样不管怎样 看一看看一看 助记忆助记忆 记一记记一记

33、 长知识长知识 【即学即用】【即学即用】 单句语法填空单句语法填空 The car is running a rate of 120 kilometres per hour. I would rate it one of the best movies that Ive ever seen. at as 完成句子完成句子 过去几年出生率有所下降。过去几年出生率有所下降。 The past few years has witnessed a drop in . 这所大学因其学术研究而受到高度评价。这所大学因其学术研究而受到高度评价。 The university for its academic

34、 research. the birth rate is highly rated 8.Without forests,we would have no air to breathe.(Page 53) 如果没有森林如果没有森林,我们就没有空气可以呼吸我们就没有空气可以呼吸 剖析剖析 此句用此句用without短语表示虚拟条件短语表示虚拟条件,主句应用虚拟语气。主句应用虚拟语气。 I couldnt live such a life without a good wife. 没有一个好妻子没有一个好妻子,我无法过这样的生活。我无法过这样的生活。 这个句式中的这个句式中的“without+名词名

35、词”替代了一个虚拟的条件状语从替代了一个虚拟的条件状语从 句句: If I didnt have a good wife,I couldnt live such a life. 【合作探究】【合作探究】 读一读读一读 细观察细观察 阅读下列句子阅读下列句子,用用without改写句子改写句子 If there were no air,we humans couldnt live. We humans couldnt live without air. If it hadnt been for your help,I couldnt have passed the exam. I couldnt

36、 have passed the exam without your help. We would be unable to survive if there were no clean water. Without clean water we would be unable to survive. 说一说说一说 勤归纳勤归纳 【即学即用】【即学即用】 单句语法填空单句语法填空 Please show up at the meeting.I (be) terrified without you. I couldnt (achieve) it without your generous sup

37、port. would be have achieved 完成句子完成句子 这里一定有其他人。没有别人帮助这里一定有其他人。没有别人帮助,这个男孩子不可能算这个男孩子不可能算 出这道题。出这道题。 There must have been someone else here.The boy without help. 没有地球没有地球,我们没有地方居住。我们没有地方居住。 We without the Earth. couldnt have worked out the problem wouldnt have a place to live 9.Experts say that it is

38、not yet too late,if we take action now. (Page 53) 专家们说专家们说,如果我们现在就采取行动如果我们现在就采取行动,还为时不晚。还为时不晚。 take action 采取行动采取行动 Such an idea urged him to take immediate action. 念头一出念头一出,他马上行动。他马上行动。 【合作探究】【合作探究】 读一读读一读 细观察细观察 阅读下列句子阅读下列句子,写出句中表达采取行动写出句中表达采取行动,采取措施的词组采取措施的词组 We should take immediate action to de

39、al with the problem. 词组词组 take action The government has taken measures to stop the problem from getting worse. 词组词组 take measures We need to take steps to clean up the river. 词组词组 take steps 看一看看一看 助记忆助记忆 说一说说一说 勤归纳勤归纳 记一记记一记 长知识长知识 【即学即用】【即学即用】 单句语法填空单句语法填空 They took strong (measure) against dange

40、rous drivers. Effective measures must (take) to improve the present situation. measures be taken 完成句子完成句子 你要完全相信你的本能并准备好在必要的时候对他们立刻你要完全相信你的本能并准备好在必要的时候对他们立刻 采取行动。采取行动。 You need to totally trust your instincts and be prepared to upon them if necessary. 一个小小的善意的举动能有大不同。一个小小的善意的举动能有大不同。 can make a big difference. take immediate action A small act of kindness