Unit 2 Lesson 4 Animal Talk 课件2.ppt

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1、Lesson4AnimalTalkUnit2CommunicationObjectives:Beabletoread!1Beabletolisten!2Beabletocommunicate!3Beabletounderstand!4Warm-upThinkofanimalsyouknow.Howdotheycommunicate?ExampleIthinkantscommunicatebysmell.Whataboutyou?1.Readthetext.Whatarethethreemainmethodsofanimalcommunication?2.Readthetextag

2、ain.Whatmethodsdotheseanimalsusetocommunicate?AntselephantsdogsfrogsCatswhalesmiceinsectsMydogisinthegarden.Heiswagginghistail,hismouthisopenandheislookingatme.Whatishetryingtotellme?JaneRobertsreports.Peoplehavealwaysbeeninterestedinanimalcommunicationandscientistshavedonealotofresearchonthi

3、ssubject.Mostanimalscommunicatebysmell.Dogsarefamousforthis.Whenadogwalksoutside,itlearnsaboutotherdogsbysmellingthings.Dogshavehelpedpoliceforalongtime,too.Theycanfindmissingpeoplebyusingtheirfantasticsenseofsmell.Micehaveanexcellentsenseofsmell,too.Scientistshaveeventrainedthemtofindlandmin

4、es.Scientistshavediscoveredthatevenantsusesmell.Theyusesmelltotellotherantswherethefoodis.Everyonehasheardbirdssinging.Researchhasshownthatmanyotheranimalsusesoundtocommunicate.Frogsandinsertscommunicatewithsounds.Usuallythe“gentlemen”makesoundstoinvitethe“ladies”.Whalesandelephantsalsousesou

5、ndtocommunicate.Thesesoundscantravelveryfarthroughwaterortheground.However,itisnotpossibleforhumanstohearsomeofthesounds.Theyareeithertoolowortoohighforus.Animalshavealwaysusedbodylanguagetocommunicateaswell.Whenacatputsitsearsback,itisabitmad.Whenitwassitswithitstailarounditself,itishappy.Wh

6、enadogputsitstailunderitsbody,itisscared.Whenitwagesitstailandopensitsmouth,itishappy.SoIthinkmydogishappyrightnow.1.Readthetext.Whatarethethreemainmethodsofanimalcommunication?Smell,soundandbodylanguage.2.Readthetextagain.Whatmethodsdotheseanimalsusetocommunicate?Smell:ants,dogs,miceSound:e

7、lephants,whales,frogs,insectsBodylanguage:Cats,dogs狗也协助警察很长时间了。通过利用他们卓越的嗅觉，他们可以失踪的人们。老鼠也有很杰出的嗅觉。科学家们训练它以寻找。科学家们还发现甚至是蚂蚁也利用嗅觉。他们利用嗅觉告诉其他蚂蚁食物在哪。每个人都听过鸟唱歌。研究表示多数鸟类通过声音来沟通。青蛙和昆虫通过声音沟通，通常雄性通过声音来吸引异性。鲸和大象也通过声音来交流。声音可以穿过水和陆地传播的非常远。然而，人类是不可能听到一些声音的。对