人教版 (2019)必修 第三册Unit 4 Space Exploration评优课ppt课件

这是一份人教版 (2019)必修 第三册Unit 4 Space Exploration评优课ppt课件，共22页。PPT课件主要包含了result in，worthwhile，常用词汇，亮点表达等内容，欢迎下载使用。

Ⅰ.Pre-writing(Ⅰ)Learning t write after the mdelIS EXPLORING SPACE A WASTE OF TIME AND MONEY？
Cuntries arund the glbe are spending billins f dllars and lts f time n varius space missins，whether t Mars r ther planets much further away.Sme peple argue that we shuld stp wasting time and mney explring space.Instead，we shuld feed the wrld’s pr and find immediate slutins t ther prblems，such as pllutin and fatal diseases.Hwever，thers feel this is a shallw view which fails t realise hw explring space helps us.
Firstly，explring space has already made a difference in the fight against wrld hunger.It has directly resulted in the many satellites that nw rbit Earth.A number f the satellites recrd data n land and weather patterns.Then the data is transmitted t scientists n Earth.After careful analysis，the scientists can prvide useful recmmendatins and advice fr farmers.As a result，space-based science has helped farming in its effrts t grw enugh fd t feed Earth’s increasing ppulatin.
Secndly，space explratin has already prmted technlgical imprvements that benefit us all.High-end prducts arund the wrld are made t a higher standard nw because f advanced technlgy which was first created t meet their requirements fr space explratin.Fr example，space technlgies have helped the research and develpment f different types f new material.They have als helped cmpanies make better heart mnitrs and ther machines that dctrs regularly use.Tday，space technlgies are widely used in all kinds f industries，and everyday prducts such as GPS，memry fam pillws，and smartphne cameras are changing ur lives.
Finally，sending astrnauts int space has helped peple t think abut the wrld’s prblems and even t find ways t slve them.Seeing pictures f ur planet as an island in a black sea made peple realise that ur planets’s resurces are limited.In rder t prvide fr such a rapidly increasing ppulatin，scientists are trying t find ther planets that culd ne day be ur new hme.The greatest attentin at present is n Mars because it is clser t Earth.In the future，humans may live n bth planets.In clsing，explring space prvides the wrld with many different benefits.Therefre，it shuld cntinue s as t prvide new and better slutins t peple’s shrt-term and lng-term prblems.
篇章结构Para.1：Advance an argument whether explratin space a waste f time and mney.Para.2：Explring space has cntributed great t the fight against wrld hunger.Para.3：Space explratin has already prmte technlgical imprvement.Para.4：Sending astrnauts int space has furthered understanding f the wrld’s prblems and figuring ut ways t slve them.Para.5：Draw a cnclusin that explring space is f great benefit.
(Ⅱ)Preparatin fr writing—wrds and phrases
①________________发射卫星　　　　　　②____________收集数据③____________探索太空 ④_________________ 有很大影响⑤____________ 导致 ⑥____________ 从中受益⑦_____________________先进的技术
launch a satellite
cllect data
explre space
make a difference
benefit frm
advanced technlgy
⑧_______________________满足要求⑨___________________改变我们的生活 ⑩___________________ 有限的资源⑪____________ 靠近；接近 ⑫____________提供生活所需⑬_________________________________促进技术改进 ⑭____________________________ 提供解决问题的办法
meet the requirements
change ur lives
limited resurces
prmte technlgical imprvement
prvide slutins t prblems
Ⅱ.While-writing
最近，你班同学就“太空探索是否值得”这一话题展开了一场讨论。请你根据下表提供的信息，用英语写一篇短文介绍讨论的情况。
Step 1　List the utline f the passage.Paragraph 1：__________________________________________________________________________________________________________________________________Paragraph 2：___________________________________________________________Paragraph 3：___________________________________________________________
Recently，students in ur class have had a discussin n whether space is wrth explring.
30% f us think space explratin is nt wrthwhile.
On the ther hand，70% think space is wrth explring.
Step 2　List the wrds，phrases and sentences.
1.Wrds and phrases①________________ 举行讨论　　　　　②_______________ 值得做③____________ adj.值得的 ④________________ 离……很远⑤____________ 被用来做……
have a discussin
be wrth ding
be far away frm
be used t d
⑥__________________ 从……受益良多⑦________________ n.交际 ⑧________________ 天气预报⑨________________ 能源短缺
benefit a lt frm...
cmmunicatin
weather frecast
energy shrtages
2.Sentences
①用于太空探索的资金可以用来解决地球的饥饿和污染等问题。(过去分词作定语)________________________________________________________________________________________________________________________________________________②70%的人认为太空值得探索，因为我们从中受益匪浅。(because)________________________________________________________________________
And the mney spent n space explratin can be used t slve the earth’s prblems such as starvatin and pllutin.
70% think space is wrth explring because we have benefited a lt frm it.
③总有一天，我们可以搬到其他星球去解决人口问题。(by ding)________________________________________________________________________④太空研究将使我们能够找到新的能源来解决地球上的能源短缺问题。(不定式作目的状语)_______________________________________________________________________________________________________________________________________________
We may slve the ppulatin prblem by mving t ther planets ne day.
Space research will enable us t find new surces t slve the prblem f energy shrtages n the earth.
Step 3　Draft the passage by using the fllwing wrds.
and，n the ther hand，als，what’s mre
Recently，students in ur class have had a discussin n whether space is wrth explring.30% f us think space explratin is nt wrthwhile.They think space is t far away frm us and ur daily life.And the mney spent n space explratin can be used t slve the earth’s prblems such as starvatin and pllutin.
On the ther hand，70% think space is wrth explring because we have benefited a lt frm it，such as using satellites fr cmmunicatin and weather frecast.What’s mre，with further space research，we may slve the ppulatin prblem by mving t ther planets ne day.Als，space research will enable us t find new surces t slve the prblem f energy shrtages n the earth.
Ⅲ.Pst-writing—plishing the passageExchange yur passage with yur partner，and pay attentin t the fllwing pints.
□1.Des the writer explain why he/she changed/wanted t change?□2.Des the writer tell hw the changes have imprved r will imprve his/her life?□3.Is the text well-rganised?□4.Des the writer use wrds and expressins t shw similarities and differences?□5.Are there any grammar r spelling errrs?□6.Des the writer use crrect punctuatin？
have a discussin abut，different pinins，n the ne the ther hand...，first/secnd/third...，what’s mre，besides，in additin，hwever/but/thugh，t sum up/in a wrd/in cnclusin/in shrt/abve all/in general/generally speaking
1.Recently we have had a heated discussin n whether we can play cmputer games r nt.最近我们就是否可以打电脑游戏举行了热烈的讨论。2.Accrding t a recent survey，fur－millin peple die each year frm diseases linked t smking.依照最近的一项调查，每年有4 000 000人死于与吸烟相关的疾病。3.Opinins are divided n the questin.在这个问题上有意见分歧。4.Sme students are fr the idea，while thers think therwise.一些学生赞成这个想法，而另一些人则不这么认为。
5.Hwever，there are a large number f peple wh hld a different view cncerning this case.然而，有很多人对这个事情持不同的看法。6.It has mre disadvantages than advantages.它弊大于利。7.Sme hld the view that ding sprts can keep fit，while thers think that it is a waste f time ding sprts.有些人认为做运动可以强身健体，然而有些人认为运动是浪费时间。8.Therefre，we can draw the cnclusin that the sharp decline f wildlife species resulted frm the ppulatin grwth.因此，我们可以很自然的得出结论，即野生物种的急剧下降源于人口的增加。