Unit 4 Life on Mars Reading 2课件英语资料

Unit4

Reading2Learningaims1.Tolearnsomelanguagepointsinthetext.2.Tobeabletofinishsomeexercisesaccordingtothetext.

RevisionA:AnswerthefollowingquestionsaboutthelifeonMars.WhenwillpeoplemovetotheplanetMars?WhywillweleaveourownplanetEarth?HowlongdoesthespacecraftneedtogettoMarsatpresent?HowlongdoesthespacecraftneedtogettoMarsinthefuture?WhatwouldfoodonMarsbelike?Bytheyear2100.BecauseEarthisbecomingmoreandmorecrowdedandpolluted.Ittakesmonths.About20minutes.Foodwouldprobablybeintheformofpillsandwouldnotbesotasty.6.WhatwillbeaproblemforpeopleonMars?7.Howcanpeoplepreventthisproblem?8.WhataretheadvantagesforpeopleonMars?9.Whichschoolwouldthestudentsstudyat?10.Whereshouldthestudentsconnecttheircomputers?Gravity.Peoplewillhavetowearspecialbootstopreventthemselvesfromfloatingoffintospace.a.Morespaceb.Moretimetorelaxc.Noschool.Theywouldstudyatonlineschoolswith"e-teachers".Theyshouldconnecttheircomputerstoaninterplanetarynetwork.RevisionB:Fillintheblankswithproperwords.Ourownplanet,earth,isbecomingmoreandmore________and_________.Hopefully,wecanbuildabetterworldon_______bytheyear2100.Atpresent,ourspacecraftaretooslowtocarrylargenumbersof____________toMars.By2100,the__________mighttakeonly20minutesinspacecraftthattravelatthespeedoflight.FoodonMarswouldprobablybeinthe_______ofpillsandwoundnotbeso________asthatontheEarth.GravitycouldbeanotherproblemforpeopleonMars.ThegravityonMarsisonlyabout______________ofthatontheEarth.PeopleonMarshavetowearspecial________topreventthemselvesfrom__________offintothespace.crowdedpollutedMarspassengersformjourneytastythree-eighthsbootsfloating1.Ourownplanet,theEarth,isbecomingmoreandmorecrowdedandpolluted.moreandmorecrowded越来越拥挤more,most放在多音节形容词、副词前面，帮助构成比较级和最高级。如：morebeautiful,mostslowly这里，moreandmore用来加强程度，表示越来越怎么样。相当于：morecrowdedandmorecrowded而短形容词则这样构成：biggerandbiggerLanguagepoints越来越年轻越来越快越来越聪明越来越细心越来越好越来越舒服

Atthemoment,Iwantyoutosayasentencetopraise(赞扬)yourpartneroryourbestfriendwiththe“comparative+comparative”.comparative+comparative

越来越…youngerandyoungerfasterandfastercleverandclevermoreandmorecarefulbetterandbetter

moreandmorecomfortablecrowded用作形容词，意为“拥挤的”。becrowdedwith意为“充满，挤满”。如：Theroomwascrowdedwithguests.

房间里挤满了客人。practice根据汉语意思完成句子。1.Thebuswasso_________(拥挤的)thatIdidn’tgetonit.2.Aswegetnearer,theimagebecomes________________(越来越大).crowdedbiggerandbigger2.Atpresent,ourspacecraftaretooslowtocarry

largenumbersofpassengerstoMars.目前，我们的宇宙飞船太慢了，无法运送大批的乘客去火星。Largenumbersof表示“大量的”=alargenumberofLargenumbersofpeoplegotravellingduringtheNationalDayholiday.(1)...too+adj.+todo

Sandy太小了而不能去上学。Sandyistooyoungtogotoschool....so...that...can’t....Sandyissoyoungthatshecan’tgotoschool....adj.+enoughtodo...Sandyisnotoldenoughtogotoschool.==It’stimeforyoutomakesentenceswiththesentencestructuresabove.largenumbersof许多，大量，修饰______名词，做主语时，谓语动词常用______形式，相当于alotof,many。eg.Largenumbersofbirdsflytothesoutheverywinter.(2)largenumbersof...manythenumberof

……的数目

后常接可数名词复数，做主语时，谓语动词常用单数形式。(1)Chinahas______________ofpeople.(2)_____________ofthepopulationofchinais1.3million.(3)____________myfriendscametomybirthdayparty.a(large)number

The

number

Anumberof=可数复数eg.ThenumberoftouristsstartstotailoffinOctober.游客在十月份开始逐渐减少。3.

Withthedevelopmentoftechnology,bytheyear2100,thejourneymightonlytakeabout20minutesinspacecraftthattravelatthespeedoflight!随着技术的发展，到2100年，乘坐以光速飞行的宇宙飞船，行程或许只要大约20分钟！Iwassecondinthe

race

witha

time

of14.2

seconds.介词with短语，在句中常用作状语，表示原因、条件、时间、伴随、方式等。我以14.2秒的成绩在比赛中位列第二。光的速度是300,000,000米每(per)秒.汽车正高速行驶。我们要全速前进。Thespeedofthelightis300,000,000meterpersecond.Thecarsaredrivingathighspeed.Weshouldmoveatfullspeed.atthespeedof(…)

Bythe

time

Igottothestationthetrainhadalreadygone.by表示“到...为止，截止...”等我到达火车站时，火车已经开走了。

ata/thespeedof表示“以……的速度”Thecarismovingataspeedof100kilometresperhour.小汽车正以每小时100公里的速度行驶。4.ThegravityonMarsisonlyaboutthree-eighthsofthatonEarth.Three-eighths八分之三分数在英语中通常是借助于基数词和序数词来共同表达的。其中基数词表示分子，序数词表示分母。如：one-tenth十分之一athird三分之一注意：分子除用one外，也可用a；twothirds三分之二fourfifths五分之四但是，1/2不能说a(one)second,而要说a(one)half。1/4和3/4可以说a(one)fourth和threefourths,但常用aquarter和threequarters表示。如果分子大于1，分母要用复数形式。如：选择题。About______ofthestudentsarefromforeigncountries.A.threefourB.threefourthC.thirdfourthD.threefourths翻译句子。我们班五分之三是女生。_____________thestudentsinmyclass________girls.practiceThree-fifthsofareTheaironMarsismuchthinnerthanthatontheEarth.在做比较时，我们常用that/those指代句中类似或相同的那一部分。此句中that指代前面的gravity.火星上的空气要比地球上的稀薄的多。5.ComparedwithlifeonEarth,lifeonMarswillbebetterinmanyways.compare:examinepeopleorthingstoseehowtheyaresimilarandhowtheyaredifferent(v.比较，对比)Wecarefullycomparedthefirstreportwiththesecond.我们仔细的对第一份报告和第二份报告进行了对比。comparewith把……相比较

拓展：compare...to意为“把……比作……”。Shakespearecomparedtheworldtoastage.莎士比亚把人世比作舞台。用comparewith和compareto的正确形式填空。Hecannot_____________Shakespeareasawriteroftragedies.2.Youcannot_________thiswar_____theVietnamwar(越南战争).practicecomparewithcomparetoLifeonMarswouldbeinterestingaswellaschallenging.火星上的生活，不仅有挑战性，还很有趣。I

want

to

visit

Andrewaswell

as

Martin.

aswellas意思为“不但……而且……”我想去拜访安德鲁，还有马丁。

She

shares

(in)

my

troubles

as

well

as

my

joys.她与我同甘共苦。6.LifeonMarswouldbebetterinsomeways.在很多方面我们都做的很好。Wedidwellinmanyways.insomeways;inmanyways;bytheway(1).__________,doyouknowhowtogettoXishanqiaoschool?(2).Youareveryclever,youareright___________.(3).Itisagoodideatoworkalone____________.Bythewayinmanywaysinsomeways7.Food

would

mostprobablybeintheformofpillsandwouldnotbesotasty.as+adj./adv.+asAmy和sandy一样苗条。Amy跳舞没有Sandy跳得优美。AmyisasslimasSandy.Amydoesn’t

danceas/sobeautifullyasSandy.notas/so+adj./adv.+asintheformof以……形式DiscussionaboutlifeonMars

☆Notcrowded/polluted☆Havemorespace☆Robotswilldoourwork.☆Studentswillstudyathome.☆Peoplewillhavemore

timetorelax.☆Peoplewillwear

specialdesignedboots.☆Notrafficjam

…

Lowgravity

Fooddoesn’ttastegood

Travelwillmakepeoplefeelsick.

Moneyisnotimportant

FarawayfromfriendsonEarth

…AdvantagesDisadvantagesEverygroup,please

giveareport.DoMoreexercises.Translatethefollowingphrases.以光速运行______________________2.在很多方面___________飘进太空_________________4.现在，目前________________________5.comparewith________6.largenumbersof_____________travelatthespeedoflightinmanywaysfloatoffintospaceatpresent与…比较许多的，大量的B.FillintheblankswiththecorrectformsofthewordsinthebracketsWehada_______mealwithherlastnight.(taste)Theriverh