读写译4 ( 南方版 )大学英语教程4（南方版）读写译UNIT 1.ppt

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1、Unit1ALIENLIFEPartILANGUAGESKILLKEYWORDSMADEEASYReadaloudthefollowingsentencesandfigureoutwhateachitalicizedwordmeans.TheClueintheparentheseswillhelp.1.Thescholarshavedebatedthisquestionforover200yearswithoutcomingtoasolution.(discussed)2.Provingthatextraterrestriallifedoesnotex

2、istis,bydefinition,impossible.(interplanetary)3.Plutoisaplanetthatisperpetuallydarkandfrozen.(forever)4.Venus’sdenseatmospherecreatescorrosiverainatitssurface.(erosive)5.Thejoboffindinglifeinourgalaxywouldbedaunting.(disheartening)6.Mostmainstreamscientistsareskepticalofencounte

3、rswithaliens.(doubtful)7.Atechnologicallyadeptspeciesmightfindusbeforeweareabletogolookingforit.(competent)8.Creatingaplausiblealienecosystemfromscratchisagreatchallenge.(beginning)9.Popularculturedepictsthousandsofhumanencounterswithextraterrestriallife.(describes)10.Good-heart

4、edindividualsshelterandaidthealiens,butthoseinpowerpersecutethem.(oppress)KEYWORDSMADEEASYA.Studythefollowingexpressions.encounterwithachancemeetingwith遭遇；意外地遇到inproportionto(ofparts)inharmoniousrelationto与……成比例besuggestiveofbeindicativeof引起联想的belikelytohavingahighprobabilityofo

5、ccurring很可能（发生某事）tendtoexhibitaninclinationoratendency有……的倾向KEYEXPRESSIONSINUSEB.Readaloudeachofthefollowingsentences.Seehowtheseexpressionsareused.Entiresubgenresofsciencefictionaredevotedtoencounterswithextraterrestriallife.Aliensfromsomefilmsusuallyhaveheadsthatarelargeinprop

6、ortiontotheirbodies.Thelackofpermanentphysicalformsseemstobesuggestiveofideasabouttheafterlife.Findingsimplerformsoflifeislikelytorequiresystematicobservationatcloserange.Moststoriestendtofocusononeortwospeciesfromanygivenworld.KEYEXPRESSIONSINUSEAretherealiensintheuniverse?This

7、isstillanopenquestion.Scientistshavebeenarguingoverthisissueforyearswithoutcomingtoanydefiniteassertions.However,thetypicalformofaliensdepictedinscience-fictions,moviesandTVserieshavelongbeeningrainedinpeople’sminds.Thesuddenpop-upofaliensinourseeminglymonotonouslifeenlivensalmo

8、stallthefamilieswhichfindthosemysteriousstories