高中英语外研版 (2019)选择性必修 第二册Unit 5 A delicate world教课内容ppt课件

这是一份高中英语外研版 (2019)选择性必修 第二册Unit 5 A delicate world教课内容ppt课件，共22页。PPT课件主要包含了when，eating，appetite，thus，hunting，to catch等内容，欢迎下载使用。
trap /træp/ n.夹子，陷阱 v．使陷入困境；卡住，夹住；使陷入圈套，使中计The man is abut t fall int the trap.
这个男人就要陷入圈套了。
be/get trapped in ... 被困在……中
departure /dɪˈpɑːtʃə(r)/ n．离开；起程；出发；背离，违反，离职，(从某组织)脱离Breaking up with her byfriend results in her departure.
她的离开是因为她和男朋友分手了。
depart v．离开，出发
immunity /ɪˈmjuːnəti/ n.免疫力；免除，豁免The little by has a strng immunity t viruses.
这个小男孩对病毒有很强的抵抗力。
immunity system
explde /ɪkˈspləʊd/ v．突然增加；爆炸，爆发，迸发(感情)The cmpany’s revenue explded in 2020.
公司的营收在2020年时激增。
adj.会爆炸的，激增的
cllapse /kəˈlæps/ v.倒坍；崩溃；暴跌n.倒塌；昏倒；突然贬值The building cllapsed after the earthquake.
地震后这栋建筑倒塌了。
incident /ˈɪnsɪdənt/ n.事件；（两国间的）冲突，严重摩擦The headmaster is talking t the tw bys abut the classrm incident.
校长正在和这两个男孩谈论教室事件。
incident n. 事件，事情accident n. 事故；意外事件event n. 大事
词组翻译：小/大/相关/暴力/严重事故？
a minr/majr/related/vilent/serius incident
interventin /ˌɪntəˈvenʃn/ n.干预，介入，干涉The man stps the dmins with a successful interventin.
这个男人用一次成功的干预阻止了多米诺骨牌。
the dmins 多米诺骨牌
we /əʊ/ v．应该做；对……负有……的义务；欠(账、钱、人情等)；归因于，归功于As a cmmunity nurse, she wes the elderly gd care.
作为一名社区护士，她应该给予老人们悉心关怀。
(1) we sb. sth.＝we sth. t sb. 欠某人某物we ...把……归功于……(2) wing adj.未付的，欠着的wing t 因为，由于
Lk at the picture and answer the questins.
1. What animals can yu see in the picture?2. What kind f changes wuld take place if cats, rats and rabbits were intrduced t an envirnment like this?
Penguins and a sea bird.
They wuld hunt the birds and eat the native vegetatin, thus breaking the lcal eclgical balance.
Listen t the passage and match the main ideas with the related paragraphs.
Watch a vide abut Macquaire Island.
Read Para.1 and thinkFrm what aspects des the writer intrduce the island?
In the ______________ cean, _______ between Australia and Antarctica.
Strng winds and strmy seas.
Thin and lng
green grass, bare rck, a wild and natural beauty.
Suth-west Pacific
Hw was the shape frmed?
Humans arrived in 1810
T cntrl rats and mice
T be a surce f fd fr humans
tk ver the islandate birds’ eggsAttacked baby birds
develped an appetite fr birds
multiplied quicklyate the native vegetatindug hle, scausing sil ersinmre rabbits meant mre cats parakeets died ut in 1891.
Read para 2 & 3, what happened t Macquarie Island befre the 1970s ?
While the cat's away, the mice will play.
T live there.
The large number f mice and rats ?
The remaining 10000 rabbits ?
Disastrus results in 2006
Caused sme land t cllapseKilled a substantial number f penguins
The rat, muse and rabbit prblem needed slving nce and fr all .
Fill in the fllwing blanks with infrmatin in para.4-5
1. What’s the authr’s missin n the island?
T remve the last remaining invading species.
2. Hw d yu understand the sentence “ we humans we it t the island t give it a happy ending.” at the end f the passage ?
It is humans that have caused great damage t the island and it is ur duty t help it return t nrmal.
Read the last paragraph with the fllwing questins.
T avid similar situatins in the future, we shuld prtect the natural ecsystem and be aware f the ptential impact that human activities can have n the ecsystem.
3. Hw culd similar situatins be avided in the future?
Pstscript:In 2014, Macquarie Island was pest-free and its eclgy is n the rad t recvery.
Macquarie Island used t be a naturally beautiful place but everything changed 1 _______ humans arrived n the island. They brught rats and mice nt the island, and these small animals quickly tk ver the island, 2 ______(eat) the birds' eggs and attacking baby birds. Cats were brught t the island t cntrl the rats and mice. 3 __________ (frtunate), the cats subsequently develped an 4 ________ fr the birds t. Meanwhile, rabbits 5 _____________ (intrduce ) t the island as a surce f fd fr humans, but they multiplied rapidly and began eating the native vegetatin and digging hles, 6________ caused sil ersin .
Fill in the blanks accrding t the passage.
Unfrtunately
were intrduced
The explding rabbit ppulatin prvided plentiful fd fr the cats. 7______ cnsequence, the number f cats als increased. This in turn led t mre cats 8 _______( hunt ) the birds. Later, a virus was released nt the island, and the rabbit ppulatin decreased. But meanwhile, the cats killed mre birds fr lack f fd. In the 1980s, traps and dgs were used 9_________( catch ) the cats,and it wrked. With the departure f cats frm the island, the muse and rat ppulatin increased again. The rabbit als develped an immunity t the virus , and their number explded again. This incident made 10_____ clear that the prblem needed slving nce and fr all .
Hmewrk:Please design a pster t call n the ther students t prtect ur living cnditins. In the pster yu shuld list sme practical ds and dn'ts.