高中英语人教版 (2019)选择性必修 第四册Unit 3 Sea Exploration集体备课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集体备课ppt课件，共49页。PPT课件主要包含了目录页，即学即练，高考链接，即学即练 ，Summarize 等内容，欢迎下载使用。
Pre-reading
Language pints
While-reading
Pst-reading
D yu knw any cartns abut the sea?
Pre-reading: Lead-in
Finding Nem
The Little Mermaid
Zheng He’s vyages(Chinese)
Clumbus’ discvery f a new wrld (Italian)
Magellan’s sail arund the wrld (Prtuguese)
D yu knw any stries abut sea explratin?
1. What d yu think f the purpse f reaching ut acrss the sea? 2. Can yu think f any prblems that ancient peple might meet when reaching ut acrss the sea？3. Why did they still carry ut the task?
What are the fur majr types f essay that yu knw?
While-reading: Read and think
Narrative, descriptive, expsitry, and argumentative.
Read the text quickly and find ut what type f essay it is.
It is an expsitry essay.
Hw did yu knw?
An expsitry essay is factual, giving infrmatin n a subject.
Reaching ut Acrss the Sea
It’s abut hw Chinese peple have cnducted sea explratins ver time.
Chinese peple
India, Africa …
Trade, curisity …
Read the text and find ut hw the passage develps.
in ancient times
in the Ming Dynasty
in recent years
far int the future
Purpse/ Significance
India, the Middle East, Rme, the casts f the Indian Ocean and Sri Lanka
the Suth China Sea, the Indian Ocean, the muth f the Red Sea, the east cast f Africa
the ancient sea rutes travelled by Zheng He, the Belt and Rad Area
negtiate trade deals, cultural awareness
develp relatins
encurage cperatin and trade, strengthen the bnds, develp the whle area fr the benefit f future trade and cultural exchange
trade and enhance relatinships
understand climate change and its effects
in the past
intrductin t the tpic
in the future
Hw Chinese peple have cnducted sea explratins ver time.
1. What is the purpse fr Chinese peple t reach ut acrss the sea, and d yu have different ideas nw? 
Read the text again and find ut the detailed infrmatin.
Tday, trade and curisity remain mtivatins f China’s sea explratins, mrever we are cnsciusly pursuing cperatin, bnds, develpment f the whle area and benefits fr mankind as a whle. The changes in purpse / significance reflect the prgress f human mind ver time, but als demnstrate the fact that China is much strnger tday than ever befre s that we can be much mre invlved in internatinal affairs and shulder much greater respnsibility fr mankind. 
2. Hw much d yu knw abut the Belt and Rad Initiative?
The Belt and Rad Initiative (BRI) is als knwn as the Silk Rad Ecnmic Belt and the 21st-Century Maritime Silk Rad. The initiative calls fr the integratin (融合) f the regin int a chesive ecnmic area thrugh building infrastructure (基础设施), increasing cultural exchanges, and bradening trade.
3. What d yu think is the significance f the Belt and Rad Initiative?
The aim f this initiative is t encurage cperatin and trade acrss the histrical Silk Rad areas, and strengthen the bnds between China and the rest f the wrld. It will lead t greater integratin f China with ther cuntries.
4. What are the benefits and prblems brught abut by sea explratin?
They gt new prducts frm many different cuntries and became mre aware f ther cultures. In sme cases, this led t invasin and cnquest.
Pst-reading: Think and discuss
Is sea explratin a gd thing r a bad thing? Why?
Imagine yu are a member f the 21st-Century Maritime Silk Rad Frum (论坛), please vice yur pinin n hw t cnduct sea explratin withut harming the envirnment and animals.
They (ceans) prvide a breeding grund fr life, cnnect the wrld and prmte develpment. ——Xi Jinping
Language pints: Imprtant phrases (P26 ~ P28)
从……中退出 / 撤回
记者招待会；新闻发布会 
1. A trading rute acrss the sea was als extended alng the casts f the Indian Ocean, centred arund Ceyln (nw Sri Lanka). (Para. 2)以锡兰（今斯里兰卡）为中心的一条横跨海洋的贸易路线沿印度洋海岸延伸。2. The ancient sea rutes travelled by Zheng He are being revisited with the 21st Century Maritime Silk Rad, which is part f the Belt and Rad Initiative. (Para. 4)作为“一带一路”倡议的组成部分，“21世纪海上丝绸之路”让郑和曾经走过的古代海上航线再度受到关注。
Language pints: Imprtant sentences (P26 ~ P27)
3. Althugh the ancient sea rutes f Zheng He have been travelled many times, there are still many ther places left t explre. (Para. 5)尽管郑和的古代海上路线已经重走很多次了，但仍有许多其他地方有待探索。4. Over the centuries, further trading allwed mre explratin f the regins t the west f China, as recrded in Du Huan’s Recrd f My Travels in the eighth century. (Para. 2)几个世纪间，随着贸易的发展，对中国以西地区的探索增多了，这些在八世纪杜环所著的《经行记》一书中有所记载。
5. African ryal families sent gifts such as giraffes as gestures f friendship in return fr gld, silk, and spices. (Para. 3)非洲王室赠送长颈鹿等礼物以示友好，同时也是作为他们获得黄金、丝绸和香料的回赠。6. The aim f this initiative is t encurage cperatin and trade acrss the histric Silk Rad areas, and strengthen the bnds between China and the rest f the wrld. (Para. 4)这项倡议旨在鼓励横跨历史悠久的丝绸之路地区的合作与贸易，同时加强中国与世界其他地区之间的联系。
7. Frm a scientific pint f view, there is an urgent need t study the Arctic in rder t understand climate change and its effects. (Para. 5)从科学角度看，迫切需要研究北极，以了解气候变化及其影响。
1. A trading rute acrss the sea was als extended alng the casts f the Indian Ocean, centred arund Ceyln (nw Sri Lanka). (Para. 2) 2. The ancient sea rutes travelled by Zheng He are being revisited with the 21st Century Maritime Silk Rad, which is part f the Belt and Rad Initiative. (Para. 4)3. Althugh the ancient sea rutes f Zheng He have been travelled many times, there are still many ther places left t explre. (Para. 5)
过去分词、过去分词短语作后置定语，放在被修饰的名词后面，它的作用相当于一个定语从句。
(1) The Stry f Ah Q written by Lu Xun is familiar t us.(2) The city surrunded by muntains is my hmetwn.(3) Tell the children playing there (= wh are playing there) nt t make s much nise.(4) They lived in a rm facing (= that faced) the suth.
过去分词作定语时，过去分词所表示的动作可以在谓语所表示的动作之前发生，也可以是没有一定的时间性。作定语的现在分词表示正在进行的动作 (变为从句时，要用进行时态), 或表示经常性的动作, 或现在 (或当时) 的状态 (变为从句时, 用一般时态)。
Read and Summarize
他们中的一些人，生在农村长在农村，从没到过北京。(2) 正在召开的这个会议很重要。(3) Apart frm the urgent prblems _______ (cause) by wars and cnflicts, the UN helps cuntries with ther prblems such as lack f educatin, lack f fd, pverty, disasters and disease.
Sme f them, brn and brught up in rural villages, had never been t Beijing.
The meeting (which is) being held nw is very imprtant.
1. Please give me a knife (cut) with.2. They are always the first (bear) hardships, the last t enjy cmfrts.3. Annie Salmn, disabled, is attended thrughut her schl days by a nurse ____________ (appint) t guard her. (2014 浙江)4. The airprt ______________ (cmplete) next year will help prmte turism in this area. (2013 四川)
t be cmpleted
When 1. ______ (ask) abut petry, mst peple will say that a pem is a text 2. _______ (have) rhythm and rhyme. Famus are the lines 3. _______ (write) by William Blake, which have clear rhythm and rhyme. Others will add that pems must have a certain frm with a fixed number f lines and a fixed rhyme pattern, such as a snnet. Apart frm sme shrt sngs and pems 4. ________ (include) in his plays, all f Shakespeare’s greatest pems are snnets. Jhn Miltn was ne f the first pets 5. _______ (start) writing pems withut rhyme at the end f the lines. Once 6. _________ (publish), his wrk became famus fr the absence f rhyme at the end f each line.
4. Over the centuries, further trading allwed mre explratin f the regins t the west f China, as recrded in Du Huan’s Recrd f My Travels in the eighth century. (Para. 2)5. African ryal families sent gifts such as giraffes as gestures f friendship in return fr gld, silk, and spices. (Para. 3)
Analyze the sentences:Sentence 4，as 是连词，引导非限定性定语从句；Sentence 5，as 是介词，翻译为“作为”。
4. Over the centuries, further trading allwed mre explratin f the regins t the west f China, as recrded in Du Huan’s Recrd f My Travels in the eighth century. (Para. 2)
上句中as recrded 似乎不完整，但as的这种用法其实是一种省略现象。
以下两种解释都可接受：第一,把as看作关系代词, 指代后面整个主句的内容, as是定语从句的主语,后面省略了is。因此,as recrded等于as is already recrded。第二, 把as看作从属连词,引导方式从句,意为“像……那样”,as之后省略了it is,it指代整个主句的内容。因此,as recded等于as it is recrded。
能用于此句式的动词，一般都是“陈述、叙述、描述、提及、说及、显示、指出”之类的词，多用于议论文体，是带有总结性的提示语。
as already said2. as already mentined 3. as already described4. as already discussed 5. as already nted6. as already stated 7. as already annunced8. as already pinted ut 9. as already indicated10. as already hinted 11. as already tld12. as already shwn13. as already emphasized14. as already bserved 15. as already explained16. as already suggested
用which或as填空(1) ______ yu knw, if yu d the same thing ver and ver again, yu begin t d it autmatically.(2) And ur prters carry yur luggage, ______ means that yu can simply enjy the experience.(3) Smking is harmful t ne’s health, ______ is knwn t us all.(4) It was raining heavily last night, _______ prevented me frm ging t the party.
which
(1) as引导的非限制性定语从句可置于主句前，而which则不能；(2) as引导的非限制性定语从句有“正如”之意，而which没有此义。
Cmpare and Find
1. 如前所述，反映平均收入有许多方法，包括每个人口，每一工人，或每一工时的平均收入。2. 正如已经讨论的，顾客有不同于用户的目标。
Custmers, as already discussed, have different gals than users. 
As already nted, there are many ways f describing average incme, including per member f the ppulatin, per wrker, r per hur wrked.
1. ________ the average age f the ppulatin increases, there are mre and mre ld peple t care fr.2. He smiled plitely ________ Mary aplgized fr her drunken friends.3. Ht ______ the night air was, we slept deeply because we were s tired after the lng jurney.4. Just ______ a single wrd can change the meaning f a sentence, a single sentence can change the meaning f a paragraph.5. — Cach, can I cntinue with the training? — Srry, yu can’t ________________ yu haven’t recvered frm the knee injury.
as / fr / because
1. I’m as tall as him. 2. There are lts f famus buildings as the Eiffel Twer and the Arch f Triumph.3. He wrks as a tur guide.4. Yu ught t d as Paul tells yu.5. We didn’t knw what t d as we were just visiting there.6. He has earned as much mney as I have.
adv 跟……一样地；同样地
prep 作为；以……的身份
cnj 像……一样；依照；像
prn (与such, the same, as等连用，引导从句) 与……相同的物或人
6. The aim f this initiative is t encurage cperatin and trade acrss the histric Silk Rad areas, and strengthen the bnds between China and the rest f the wrld. (Para. 4)
the aim f sth is t d sth　某事的目的是做某事strengthen the bnds　加强联系
这项倡议旨在鼓励横跨历史悠久的丝绸之路地区的合作与贸易，同时加强中国与世界其他地区之间的联系。
Translate
strength和strengthen相关短语：with all ne’s strength 竭尽全力；全力以赴g frm strength t strength 不断壮大；越来越强build up ne’s strength 恢复体力strengths and weaknesses 优点和缺点strengthen ne’s bdy 强健身体
7. Frm a scientific pint f view, there is an urgent need t study the Arctic in rder t understand climate change and its effects. (Para. 5)
there is an urgent need t d sth 迫切需要做某事
从科学角度看，迫切需要研究北极，以了解气候变化及其影响。
Exercise There is n need _______ and it’s n use __________ there t early.A. t rush; arriving B. t wrry; t arrive C. wrrying; arriving D. t rush; t arrive
固定句型：there is n need t d sth 没必要做某事 it is n use ding sth 做某事没用处
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