新人教版选修6英语：unit5 The power of nature-language points.pptx

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1、Languagepoints1.Haveyoueverconsideredhowweakhumansarecomparedwithavolcano,hurricaneorearthquake?你是否想过，和火山，飓风或地震相比人类是何等脆弱。consider思考,主要用于：consider+名词/-ing形式:Heisconsideringstudyingabroad.他正在考虑出国留学。consider+wh-:Weconsideredhowweshouldhelpthem.我们仔细考虑应该如何帮助他们。consider+副词：Considercarefullybeforeyoude

2、cide.要慎重考虑后再作决定。2.Doyouenjoytakingrisks?riskn.风险，危险：Hewastakingariskbyovertakingonabend.他在转弯处超车是在冒风险。Thehouseisafirerisk.这房子有起火的危险。短语联想：atrisk在危险中:Youareatriskifyoudon’twearaseatbelt.不系安全带真的会有危险。attheriskof冒……危险Attheriskofseemingrude,Imustrefusedyourrequest,I’mafraid.尽管似乎无理，恐怕我还是必须拒绝你的要求。3.Havin

3、gcollectedandevaluatedtheinformation,Ihelpotherscientiststopredictwherelavafromthevolcanowillflownextandhowfast.[考点]Havingcollectedandevaluated是动词-ing形式的完成式，说明它表示的动作在主要谓语表示的动作之前发生。[考例1]Thestormleft,_____alotofdamagetothisarea.(2005全国卷I)A.causedB.tohavecausedC.tocauseD.havingcaused[点拨]“暴风雨破坏”这个动作

4、发生在left之前，故用动词-ing形式的完成式。[考例2]_____inthequeueforhalfanhour,Tomsuddenlyrealizedthathehadlefthiswalletathome.(北京2004)A.TowaitB.HavewaitedC.HavingwaitedD.Tohavewaited[点拨]此处强调已等了半个小时，然后才意识到没带钱包，故用动词-ing形式的完成式。4.Manyhouseshavebeencoveredwithlavaorburnedtotheground.许多房屋被熔岩覆盖或烧毁。burntotheground指楼等被烧毁He

5、hasnoplacetoliveinbecausehishousehasbeenburnttotheground.他无处栖身因为他的房子被烧掉了。短语联想：burnaway烧掉Thewoodhadburntawaytonothing.木头已烧成灰烬。burndown(建筑物)烧毁：Thecinemaburntdownlastyear.电影院去年被烧毁了。Theschoolwasburntdownbyvandals.学校被人纵火烧毁了。burnoff烧掉Hewasbadlyinjuredintheaccident,andhishairwasburntoff.他在事故中严重受伤，头发也被烧

6、掉了。burnout烧坏Theenginehadburntout.引擎给烧坏了。burnup烧毁，燃得更亮/旺Therocketburntupwhenitreenteredtheearth’satmosphere.火箭重入地球大气层时烧毁。Heputmorewoodinthefiretomakeitburnup.他往火上加木材想让他烧的更旺。5.Havingearliercollectedspecialclothesfromtheobservatory,weputthemonbeforewewentanycloser.[考点]earlier是副词early的比较级，意为“早些……”。[

7、考例]Thenewgroupofstudentsisbetter-behavedthantheothergroupwhostayedhere_____.(北京2007)earlyB.earlierC.earliestD.theearliest6.Weslowlymadeourwaytotheedgeofthecrater….我们慢慢向走火山口的边缘。makeone’sway（向某地）走（去）Shehesitated,butmadeherwayf