高中英语人教版 (2019)选择性必修 第四册Unit 3 Sea Exploration图文ppt课件

这是一份高中英语人教版 (2019)选择性必修 第四册Unit 3 Sea Exploration图文ppt课件，共18页。PPT课件主要包含了Text 2，Text 1等内容，欢迎下载使用。

Learning bjectives
By the end f this sectin, yu will be able t:find the arguments and evidence f tw passages by reading;grasp structures f the tw texts;discuss yur pinins abut sea explratin;write an argumentative essay t express yur pinins n sea explratin;cperate with grup mates actively thrugh checking yur argumentative essays tgether.
Lk and think.
Shuld the sea be explred?
Argumentative essays.Argument, evidence, restatement / recmmendatin / a call t actin.
Read the first paragraph f the tw texts and answer the questins.
What is the type f the tw passages?What are the three parts in argumentative essay?
Suggested Answers
Read the tw texts belw and find the arguments and evidence in them.
Analyze the structure f the first text.
Sea explratin has caused many prblems and will cntinue t cause mre.
Explratin causes pllutin.
Mining fr resurces is damaging.
Overfishing is an issue.
Deepwater Hrizn il spillPlastic pllutin
It hurts the Arctic.Burning fssil fuels adds t climate change.
Whales and dlphins are hunted.Banned, but sme cuntries still ding it.
The sea is hme t life, nt human beings’ pssessins. We shuld prtect the sea.
Analyze the structure f the secnd text.
T truly understand ur planet, we must explre the ceans which cver mst f it.
Sea explratin is imprtant fr ur future.
Understanding mre abut the sea will als help us manage its resurces better.
We need new resurces fr future develpment.
Scientific research ships can help address imprtant issues like climate change.
New medicines, fd resurces and energy.Predict events such as earthquakes.
Vast amunts f resurces may be under the sea and ice.
Envirnmental risks shuld be balanced with ecnmic needs.
Lk at the tw charts belw and decide which ne supprts which text.
I think sea explratin is a wnderful idea, because even if there are n immediate rewards fr it, t explre and find ut mre abut ur wrld is always a gd thing.Yes, my pinin has changed. Befre reading Text 1, I did nt knw that sea explratin culd add t sea pllutin, via deep sea drilling fr example.We d nt knw what we dn’t knw; We need t explre the cean s that we can better understand issues such as acidificatin which leads t seawater t becme mre acidic, and hw t fight these prblems; Studying the cean causes the creatin f new technlgies that can help us in ther areas.
In grups, discuss the fllwing questins and take ntes.
What is yur pinin abut sea explratin? D yu agree with ne argument mre than the ther?Has yur pinin changed after reading the tw texts? Why r why nt?Are there any ther aspects f sea explratin nt mentined that yu think are imprtant?
Based n yur nte, write an argumentative essay n sea explratin, expressing yur pinins with supprting facts.
Self-editing.
Are my pinins clear and d my facts supprt my pinins?Des my infrmatin flw easily frm ne paragraph t anther? D I stay fcused n my pint f view thrughut the writing?D I save the mst cmpelling r strngest pint fr the end f the paper?Des my writing make sense? Am I cnvinced? Will my readers be cnvinced?
Peer-editing.
Even thugh the ceans make up abut 70% f the earth’s surface, mre than 80% f the ceans remain unexplred. While sme peple say that we shuld nt explre the ceans, their reasning is nt very sund. Explring is nt the same as expliting. When we explre a place, we g just t see and understand what is there.We shuld explre the cean, first and fremst, because we d nt knw what we d nt knw. We thught we knew many abut the cean, but we were wrng. There culd be life frms in the cean, fr example, that fit nne f the neat categries we have fr life while we have n clue that they even exist.This brings up the secnd pint. We already knw many things abut the cean, but we need t learn mre. A gd example is cean acidificatin. We knw that it is causing cral t die. We knw that using less fssil fuel wuld cause the prcess t slw dwn. Hwever, we need t learn mre t find ut hw t stp it. We need mre research t see what is ging n, and t cme up with plans and slutins.Finally, t d this research, we have t enter an extreme envirnment nt very friendly t humans. This requires the develpment f new technlgies that can als benefit us in ther areas. Fr example, in many ways, the deep cean resembles uter space. The technlgies can benefit each ther. Fr anther instance, the technlgy f a mechanical arm t cllect samples with has been used in factries and develpment f artificial limbs fr humans.All in all, there are many gd reasns t explre the ceans. If we care abut science, abut prtecting ur ceans, and abut develping new technlgies, we need t d all we can t supprt cean explratin.
Sample Writing
Wrds and Expressins
The sea is hme t life, nt human beings’ pssessins. (P32) 海洋是生命的家园，而不是人类的私产。pssessin /pəˈzeʃn/ n. [usually pl.] 个人财产；拥有；控制搭配persnal pssessins个人财产get/take/gain/have pssessin f拥有；占有（动词短语）be in pssessin f占有；拥有；持有（介词短语）be in the pssessin f sb. = be in sb.’s pssessin为某人所有；在某人的控制下（介词短语）例句He was charged with pssessing a shtgun withut being in pssessin f a license.他被指控无证持有猎枪。
Oppnents may be cncerned, but sea explratin is imprtant fr ur future. (P32) 反对者也许会忧心忡忡，但是海洋探索对我们的未来十分重要。ppnent /əˈpəʊnənt/ n. 反对者；对手；竞争者搭配plitical ppnents 政敌a dangerus/wrthy ppnent一个危险的/可敬的对手ppnents f the vilence暴力的反对者例句It is said that ur ppnent is great, s ur team will be trained every day after schl frm tmrrw t win the game.据说我们的对手很厉害，所以我们队从明天开始每天放学后都要训练以赢得比赛。
Lgging new species will imprve ur understanding f life n the earth. (P32) 记载新物种将提升我们对地球上的生命的了解。lg /lɒɡ/ vt. 把……载入正式记录；记录 n. 正式记录；日志；原木 搭配lg in/n登录，进入（计算机系统）lg ut/ff注销，退出（计算机系统）keep a lg记日志（尤指航海/飞行日志）lgs fr the fire 烧火用的木材例句Using the cmputer in hand, yu can lg n with the passwrd and dwnlad the dcument.用手头上的电脑，你可以用这个密码登录并下载文件。