英语选择性必修 第二册Unit 5 A delicate world获奖ppt课件

这是一份英语选择性必修 第二册Unit 5 A delicate world获奖ppt课件，文件包含Unit5第01讲StartingoutUnderstandingideasComprehendingpptx、Unit51StartingoutUnderstandingideasComprehendingdocx等2份课件配套教学资源，其中PPT共21页， 欢迎下载使用。

Beautifying the envirnment is beautifying ur hearts.美化环境，就是美化我们的心灵。
Diets have changed in China—and s has its tp crp.Since 2011，the cuntry has grwn mre crn than rice.Crn prductin has jumped nearly 125 percent ver the past 25 years，while rice has increased nly 7 percent1.A taste fr meat is actually behind the change：An imprtant part f its crn is used t feed chickens，pigs，and cattle.Anther reasn fr crn’s rise：The gvernment encurages farmers t grw crn instead f rice t imprve water quality. Crn uses less water than rice and creates less fertilizer runff.This switch has decreased pllutin in the cuntry’s majr lakes and reservirs and made drinking water safer fr peple.
Accrding t the Wrld Bank，China accunts fr abut 30 percent f ttal glbal fertilizer cnsumptin.The Chinese Ministry f Agriculture finds that between 2005—when the gvernment started a sil-testing prgram that gives specific fertilizer recmmendatins t farmers2—and 2011，fertilizer use drpped by 7.7 millin tns.That prevented the emissin f 51.8 millin tns f carbn dixide.China’s apprach t prtecting its envirnment while feeding its citizens “ffers useful lessns fr agriculture and fd plicymakers wrldwide，” says the bank’s Juergen Vegele.
1.Li Jiang and Su Hua are discussing what t wear when receiving the British students next mnth.Li recmmends the traditinal Chinese dress while Su prefers the schl unifrm.(2019·江苏，书面表达)2.While it has been mre than a year since yu taught us English，I’ve missed yu a lt，thinking abut thse happy mments when we stayed with yu.(2017·天津，书面表达)
Perid One　Starting ut & Understanding ideas—Cmprehending
语篇理解 精读精练 萃取文本精华
读前清障 识记单词 快速顺畅阅读
品句猜词——请预读下列课文原句，并猜测句中加颜色词汇的意思。1.Nr wuld they fail t imagine hw its native inhabitants，including ryal penguins，king penguins，and elephant seals，existed in perfect harmny with their natural habitat fr thusands f years. _________________2.Cats were brught t the island t cntrl the rats and mice.Unfrtunately，the cats subsequently develped an appetite fr the birds，t. _______________
识记单词 快速顺畅阅读
3.With the departure f the cats frm the island，the muse and rat ppulatin started t increase. ____4.It turned ut that they develped an immunity t the virus，and their numbers explded nce again. _______________5.Then，in 2006，the rabbits’ digging caused sme land t cllapse，and killed a substantial number f penguins. ___________
Step 1　Fast-reading1.What’s the main idea f the passage?A.Macquarie Island was saved frm kinds f creatures live in harmny in Macquarie did mankind destry Macquarie Island?D.Macquarie Island’s unique scenery.
精读精练 萃取文本精华
2.Read the passage and match the main idea f each paragraph.Para.1　A.My task t Macquarie IslandPara.2 B.The rat，muse and rabbit prblem needed slving nce and fr allPara.3 C.A plan t remve all the rabbitsPara.4 D.The damage brught by rabbitsPara.5 E.A tragic stry happened in 1810Para.6 F.Macquarie Island’s beautiful sight
Step 2　Careful-readingRead the passage carefully and chse the best did I cme t Macquarie Island?A.T enjy the beauty f the investigate the damage t the spend my hliday with slve the prblem f envirnmental damage.
2.What happened t Macquarie Island in 1810?A.The island was ccupied by island was destryed by arrived n the island with rats and began n the island.
3.What were rabbits gd at accrding t the passage?A.They multiplied began t eat the native dug f the abve.
4.Which f the fllwing is similar in meaning t “in cnsequence” in Para.4?A.In fact. B.As a turn. D.At ease.
5.Which f the fllwing statements is TRUE?A.Releasing virus didn’t slve the rabbit prblem n the dgs I brught t the island wuld cause mre serius damage t the are the nly creatures dying ut n the island is n lnger a UNESCO Wrld Heritage Site because it has been damaged.
Step 3　Pst-readingAfter reading the passage，please fill in the fllwing blanks.　Macquarie Island takes n a lng，thin shape,1. is because f strng winds and 2. (strm) seas.It is a UNESCO Wrld Heritage Site.Its native inhabitants existed in perfect harmny with their natural habitat fr thusands f years.In 1810，humans arrived n the island with rats and mice unknwingly.These animals quickly tk ver the island,3. (bring) disasters t birds.Unfrtunately cats 4. (intend) t cntrl rats and mice develped an appetite fr birds，t.Later，rabbits 5. (intrduce) but they led t greater damage t the island. Experts came up with a plan t release a virus 6. (kill) the rabbits，but afterwards，they develped an immunity 7. the virus，and their 8. (number) explded nce again.
were intrduced
This incident made 9. clear that the rat，muse and rabbit prblem needed slving nce and fr all.I am here t tackle this prblem.I brught trained dgs t remve the last 10. (remain) invading species.I hpe we humans we it t the island t give it a happy ending.
Step 4　Sentence-learning1.The green grass and bare rck f its landscape cntrast dramatically，giving it a wild and natural beauty.[句式分析]　该句为简单句。现在分词短语giving it 在句中作____状语。[自主翻译]　_____________________________________________________________
青草和裸露的岩石形成了鲜明的对比，赋予它一种野性和自然的美。
2.It’s a tragic stry that began in 1810 when humans arrived n the island.[句式分析]　该句为复合句。句中含有两个定语从句，一个是that引导的定语从句，修饰先行词 ；另一个是由when引导的定语从句，修饰先行词 _____。[自主翻译]　______________________________________
这是一个悲剧，始于1810年人类来到岛上。
3.Lse n the island，they did what rabbits d best—they multiplied rapidly and began eating the native vegetatin and digging hles，which caused sil ersin.[句式分析]　此句是复合句，what引导宾语从句，在句中作did的宾语，破折号后的内容是对 从句的解释，其中 引导定语从句。[自主翻译]　_________________________________________________________________________________________________
在岛上散居时，它们做了最擅长做的事——它们迅速繁殖，开始吃当地的植被和挖洞，造成土壤侵蚀。