Unit 5 Using language （ppt课件）-2023新外研版（2019）《高中英语》选择性必修第一册.pptx

1、Using languageBiodiversity重点词汇：重点词汇：1._n.特征特征,特性特性2._v.减少减少3._v.责怪责怪,指责指责;把把归咎于归咎于4.goatn._5.primitiveadj._6.giantadj._7.tortoisen._8.遍及全世界遍及全世界adv._characteristicdecline/decrease/reduceblame山羊山羊原始的原始的巨大的巨大的陆龟陆龟worldwideII.重点短语：重点短语：1.benativeto _2.intheend_3.behometo_4.bycontrast_5.upto_6.doresearc

2、hon_源于源于.的；原产于的；原产于最后，终于最后，终于是是.的栖息地；是的栖息地；是.的家园的家园相比之下相比之下多达，忙于，胜任，由多达，忙于，胜任，由.决定决定研究研究II.重点短语：重点短语：7.beharmfulto_8.fightoff_9.carryout_10.beblamedon_11.inparticular_对对.有害有害击退击退实施，执行实施，执行被归咎于被归咎于尤其，特别尤其，特别1.The extinction of the Pinta Island tortoise is blamed on humans.(教材P53)平塔岛龟的灭绝被归咎于人类。【词汇精讲】b

3、lame v._ n._翻译：The government has been widely blamed for the crisis.The company refused to accept any blame for the damage.责怪，把责怪，把.归咎于归咎于责备，责怪责备，责怪政府因这次危机受到广泛指责。政府因这次危机受到广泛指责。这家公司拒绝为损害承担任何责任。这家公司拒绝为损害承担任何责任。【词汇拓展】be to blame(for.).应(为)负责任blame sb for sth 因某事责备某人blame sth on sb 把某事的责任归咎于某人take the b

4、lame for sth.为某事承担责任put the blame on.把责任归咎于.【牛刀小试】She was blamed _ breaking the window.He is always putting the blame _ someone else.A spokesman said that bad weather was _ _ _ the delay.Ill _ _ _ _ the failure of the project because I am in charge.forontoblamefortaketheblamefor2.After goats in part

5、icular had been brought to the island,the Pinta Island tortoise population declined.(教材P53)特别是山羊被带到岛上之后,平塔岛龟的数量下降了。【词汇精讲】decline v./n._翻译：As one grows older,his memory declines.There has been a sharp decline in profits this year.减少，下降，减少，下降，衰退，衰退，婉言谢绝婉言谢绝人的记忆力随着年龄的增长而衰退。人的记忆力随着年龄的增长而衰退。今年的利润大幅度下降。今年

6、的利润大幅度下降。【词汇拓展】in decline 在衰退中on the decline在衰退中,走下坡路decline to do sth拒绝做某事【牛刀小试】The population is _ _ _.At that time the Roman Empire was _ _.He declined _(answer)my questions.onthedeclineindeclinetoanswerListentothepodcastandfillintheblanks.Everylivingthing_cells.Theyarelike_thatareusedtobuildhous

7、es.Mostmicroorganisms(微生物微生物)aresingle-celled.Thismeansthatthey_justonecell.Infact,anaveragehumanbodycontainsabout_trillionhumancells,andaround_trillionbacteriacells.Mostofthebacteriainyourbody_digestion(消化消化).Bacteria_thiswasterandotherdeadorganicmatter,like_leaves,intonutrients.Althoughsomeoftheba

8、cteriamaycause_inhumans,plantsandanimals,theyarentallbad.ismadeupofbricksconsistofthirtythirty-ninehelpwithbreakdownfallendiseases Listen to the podcast and choose the statements that are made.1 Biodiversity is important.2 Bacteria are always harmful to humans.3 Some species of bacteria are used in

9、food production.4 Many species of bacteria recycle dead organic matter.5 Our immune systems are able to fight off all germs.Listen again and complete the fact sheet.thirty trillionthirty-nine trillionmade up of cellsbricks that are used to build houseshelp with digestionbreak downDo you know about.?

10、Have you heard of.?Complete the boxes with the expressions from the podcast.By the way.Actually.In fact,.Speaking of which,Checking background knowledgeAdding informationWhatspeciesarementionedandwhatisspecialaboutthem?Two species are mentioned:the blue whale and the water bear.The blue whale is the

11、 largest animal species on Earth,which can grow up to almost 30 metres in length and weigh over 130,000 kilos.The water bear is probably the toughest species,which can survive temperatures from 150C to a below freezing-272C.The Galapagos Islands are renowned worldwide for their unique biodiversity.T

12、he Giant Tortoise Reserve on Santa Cruz 1_ several species of giant tortoise that 2_ the Galapagos Islands.The island is also home to the Charles Darwin Research Station,where 3_ studies are carried out.is home toare native toscientificComplete the paragraphs with the correct form of the words and e

13、xpressions in the box.ancestor scientific be native to primitive habitat appearance be home to ecosystemMangroves are one of the coastal plants that grow on Isabela.They serve as the 4_for various birds and fish,and are very important to the 5_.habitatsecosystemLguanas can be found on San Cristobal.

14、They have a very special 6_,with comb-like spines on their back.appearanceprimitiveancestorThere is evidence that all the different iguanas have developed from more 7_ ones and share a common 8_.uLook at the pictures of the species native to different regions of China.uTalk about biodiversity in Chi

15、na using the words and expressions in this section.反馈达标：1.The old man was badly injured but was saved _ the end.2.He promised to us that he will carry_the plan in spite of the difficulties.3.In autumn and spring,_ contrast,stocks usually rise.4.Such water would not be native_ the moon.5.The surrounding forests are home_ many birds and animals.inoutbytoto反馈达标：6.Scientists are confident that this climate change can be blamed _ human activities.7.She likes fruit and lemons _ particular.8.Smoking is harmful _ our health.9.It is important to do research_ the theory.onintoonThank you!