Unit 3 Sea exploration Using language （ppt课件） -2022新人教版（2019）《高中英语》选择性必修第四册.pptx

1、Using Language【版本：新人教版本：新人教 册别：选择性必修四册别：选择性必修四】UNIT 3 SEA EXPLORATIONPre-readingHave you seen any films about sea exploration?Deep Sea Challenger 3DDeepwater HorizonThe Heart of SeaOcean World 3DHere is the trailer（预告片）of James Camerons Deep-sea Challenge 3D，a documentary film.discover new speciesde

2、tect energy resourcespredict potential disastersPre-reading:Warming upWhat do you know about sea exploration?Pre-reading:DiscussionWhat are the advantages and disadvantages of sea exploration?Advantages of sea exploration 1.Play a fundamental role in filling in the gaps on the blank information rega

3、rding the ocean.2.Offer information needed to better understand environmental changes and protect the sea.3.Help predict the potential disasters,such as earthquakes and tsunamis.4.Detect some new resources from the ecosystems that might give benefits to the medical drugs and other products.5.Lead pe

4、ople to locate the parts in the ocean that are actually full of resources for us.Pre-reading:DiscussionDisadvantages of sea exploration 1.Continuous exploration may lead to overfishing.2.Cause damage to some ocean creatures or marine life forms.3.Lead to the destruction of ocean treasures.4.Possibil

5、ity of risks to ruin the ecosystems around the area.5.Lead to the waste of money,time,and energy.Pre-reading:DiscussionWhile-readingWhile-readingRead quickly for general understanding and answer the questions.1.Whats the genre(体裁体裁)of the two texts?Argumentative essay2.What are the authors attitudes

6、 to sea exploration in these two texts?Text 1:opposed Text 2:supportiveLook at the two charts below and decide which one supports which text.Text 2Text 1In groups,discuss the following questions and take notes.1.What is your opinion about sea exploration?Do you agree with one argument more than the

7、other?I think sea exploration is a wonderful idea,because even if there are no immediate rewards for it,to explore and find out more about our world is always a good thing.2.Has your opinion changed after reading the two texts?Why or why not?Yes,my opinion has changed.Before reading Text 1,I did not

8、 know that sea exploration could add to sea pollution,via deep sea drilling for example.3.Are there any other aspects of sea exploration not mentioned that you think are important?We do not know what we dont know;we need to explore the ocean so that we can better understand issues such as acidificat

9、ion which leads to seawater to become more acidic,and how to fight these problems;studying the ocean causes the creation of new technologies that can help us in other areas.When it comes 1_sea exploration,different people have different opinions.Some people think sea exploration has caused many prob

10、lems and 2_(continue)to cause more.They are afraid that exploiting more means polluting more,with plastic pollution 3_(kill)many birds and fish.Mining for resources is very damaging.Besides,overfishing is another problem.Whales and dolphins 4_(hunt)for their meat.Others think 5_necessary to do more

11、research on the sea.will continuekillingare huntedit6_(understand)our planet,we must explore the oceans 7_cover most of it.Understanding more about the sea will also help us manage its resources8_(well).9_(log)new species will improve our understanding of life on the earth.In my opinion,as technolog

12、y improves,we will have the 10_(able)to keep this balance between sea exploration and economic needs.To understandwhichbetterLoggingabilityLanguage pointsnegative cyclespill sth into the seamine for resourceswithout mercy address important issuestake action have more options for tap waterso-calledbe

13、 home toin possession ofaccess the deep oceanbe balanced withamounts of1.Although this was banned in 1982,some countries are still“murdering”these intelligent creatures without mercy.尽管早在尽管早在1982年就已禁止年就已禁止,但有的国家仍地无情地但有的国家仍地无情地“谋杀谋杀”这些聪明的动物。这些聪明的动物。本本句是一个复合句。句是一个复合句。some countries are.是主句；是主句；althoug

14、h=though是从属连词，意为是从属连词，意为“虽然虽然;尽管尽管”，引导让步状语从句引导让步状语从句。(1)用作连词用作连词表示表示“虽然虽然”，两者，两者大致大致同义，可同义，可换换用，只是用，只是 although 比比 though 更为正式。更为正式。Though/Although it was raining,we went outside.(2)用作副词用作副词although一般不用作一般不用作副词，而副词，而 though 可用作可用作副词，且副词，且一一般放在句末般放在句末(不放在句首不放在句首)，意，意为为“可是；不过可是；不过”。Its hard work;I enj

15、oy it though.(3)用于习语用于习语在在 as though(好像好像，仿佛仿佛)、even though(即使即使，纵然纵然)等固定等固定短语中不能用短语中不能用 although。He is an honest man,I must say,even though I dont like him.(4)用于倒装用于倒装though引导的让步状语从句可用部分倒装的形式引导的让步状语从句可用部分倒装的形式(注意：倒注意：倒装装后位于句首的名词之前不用冠词后位于句首的名词之前不用冠词)，但，但 although 一般不这一般不这样用。样用。Child though he was,he

16、 did quite well.【语境应用语境应用】语法填空。语法填空。1)We will try our best to make it _ though it is hard work.2)He nodded _ though he knew everything about it.evenasmercy n.if someone shows mercy they choose to forgive or to be kind to someone who they have the power to hurt or punish 仁慈；宽恕；恩惠仁慈；宽恕；恩惠eg He showed

17、no mercy to his enemies.他他对敌人毫不仁慈。对敌人毫不仁慈。【归纳归纳】mercy短语短语at the mercy of 任任处置处置;对对无能为力无能为力;任由任由摆布摆布beg for mercy 恳请宽恕恳请宽恕 have mercy on/upon sb.对某人表示怜悯对某人表示怜悯 show mercy to sb.对某人表示怜悯对某人表示怜悯 without mercy 残忍残忍地，毫不留情地地，毫不留情地 merciful adj.仁慈的；宽大的仁慈的；宽大的be merciful to/towards sb 对某人仁慈对某人仁慈【语境应用语境应用】用适当

18、的介词填空。用适当的介词填空。1)They showed mercy _ their enemies.2)The ship was _ the mercy of the storm.3)She got on her knees and begged _ mercy.onatfor2.The sea is home to life,not human beings possessions.海洋海洋是生命的是生命的家园，而不是家园，而不是人类人类的私产的私产。possession n.something that you own or have with you at a particular t

19、ime 个人财产个人财产 if something is in your possession,you own it,or you have obtained it from somewhere 拥有；控制拥有；控制 eg He had sold all his possessions and left the country.The house has been in the familys possession since the 1500s.be in possession of 拥有拥有（主语为人）（主语为人）be in the possession of(sb)=be in ones

20、 possession（某物）被（某物）被（某人）拥有（某人）拥有come into ones possession 为某人所拥有为某人所拥有take/come into possession of 占有；拥有占有；拥有possess v.占有，拥有；控制，占有，拥有；控制，支配支配【语境应用语境应用】根据汉语意思补全下面句子（每空一词）。根据汉语意思补全下面句子（每空一词）。1)这伙人被逮住了，人赃俱获。这伙人被逮住了，人赃俱获。The gang was caught _ _ _ stolen goods.2)离开宾馆时请记得随身携带好你的私人物品。离开宾馆时请记得随身携带好你的私人物品。Please remember to take all your _ _ with you when you leave the hotel.3)Jack是是个好孩子，他有很多好品质。个好孩子，他有很多好品质。Jack is a good boy and _ _ _ _.in possession of personal possessions possesses many good qualities一轮复习练习题：一课半一轮复习练习题：一课半