九年级英语下册 Unit 4 Life on Mars Reading II课件 （新版）牛津版.ppt

unit4lifeonmarsreading ii ourownplanetearth fillintheblankswithproperwords theearthisbecomingmoreandmorec andp becausethepopulationisincreasingr somepeoplewouldliketomovetom theythinkbytheyear2100ours couldcarrylargenumbersofp however therecouldbemanyproblems forexample couldhumanssurvivewithoutwater o orfood howwouldpeoplepreventthemselvesfromf offinspace wouldtherebeschoolsonmars anyway c withlifeontheearth lifeonmarswouldbeinterestingaswellasc rowded olluted apidly ars pacecraft assengers xygen loating ompared hallenging earthisbecomingmoreandmorecrowdedandpollutedbecauseoftherapidincreaseinpopulation whywillweleaveourownplanetearth moreandmorecrowdedandpolluted moreandmore用来加强程度 表示越来越 comparative comparative 越来越年轻越来越快越来越好越来越细心越来越舒服 youngerandyounger fasterandfaster betterandbetter moreandmorecareful moreandmorecomfortable makesomesentencestopraiseyourpartnerwiththe comparative comparative ittakesmonths becauseourspacecraftaretooslowtocarrylargenumbersofpeopletomarsatpresent howlongdoesthespacecraftneedtogettomarsatpresent too adj todo so that can t adj enoughtodo sandy太年轻了而不能去上学 sandyistooyoungtogotoschool sandyissoyoungthatshecan tgotoschool sandyisnotoldenoughtogotoschool bytheyear2100 thejourneymightonlytakeabout20minutesinspacecraftthattravelatthespeedoflight howlongdoesthespacecraftneedtogettomarsinthefuture atthespeedof 光的速度是300 000 000米每 per 秒 我们要以每小时100公里的速度前进 汽车正高速行驶 thespeedofthelightis300 000 000metrepersecond thecarsaredrivingathighspeed weshouldmoveatthespeedof100kilometresperhour food gravity freetime houses schools lifeonmars lifeonmars foodwouldmostprobablyintheformofpillsandwouldnotbesotasty thegravityonmarsisonlyaboutthree eighthsofthatontheearth comparedwithlifeontheearth peoplewouldhavemorespace robotswoulddomostoftheirworksothattheycouldhavemoretimetorelax everystudentwouldhaveacomputerconnectedtoaninterplanetarynetwork food gravity houses freetime schools food gravity houses freetime schools intheformof 以 的形式 three eighths 八分之三 基数词表示分子 序数词表示分母 如果分子大于1 分母要用复数形式 comparedwith to 与 相比较 sothat 以便 表目的 haveacomputerconnectedto 过去分词短语作后置定语 languagepoints intheformof three eighths comparewith sothat acomputerconnectedto wouldyoulikethefoodintheformofpills ofcoursenot ihateeatingpillssofar 五分之三 ofthestudentsinmyclass girls three fifths are icomparedthefirstreportwiththesecond youdidagoodjob weshouldplantmoretrees wecanhaveabetterenvironment sothat whatdoyoureadinyoursparetime thebookswrittenbyhanhanaremyfavourite couldhumanssurviveonmarswithoutwater oxygenorfood discussion plantmoretreestopreventsandstorms protectwetlandstopreventfloods gotoschoolbybikeinsteadoftakingthecartokeeptheearthfromgettingwarmerandwarmer 4 stoppeoplefromcuttingdowntrees 5 donotdroplitter 6 don tbuildtoomanytallbuildings somesuggestionstoprotecttheearth there saplaceinyourheart andiknowthatitislove andthisplaceismuchbrighterthantomorrow andifyoureallytry you llfindthere snoneedtocry healtheworld makeitabetterplace healthewo