全新版大学英语第四册unite2课件

Unit2
Smartcars
InthisUnit,youwill…
Pre-readingtask
Text-analysis
Wordsandexpressions
Classassignments
Writingskills
Homework
pre-readingtask
Discussing:IfIcanaffordacar,Iwillnotbuyonebecau…
Listentothepassageagainandsaywhat
changeswillmakedriving:
--wheels/power?
--atingarrangement?
--roadsystem?
--drivers?
II
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Thecharacteristicofexpositorywriting:
Factsandopinionsareofteninterwoven(交织)inexpositorywriting,andwemustlearntodistinguishthem.PleatellntencesthatexpressopinionsfromfactualstatementsinPartI.(分辨事实和看法)
Anotherability---findingoutdefinitions:Providedefinitionsfor“blindspot”and“globalpositioningsystem”,“atomicclock”,“automateddriver.”
Textanalysis
Whatis“blindspot”?
2.WhatistheGlobalpositioningsystem?
3.Whatisanatomicclock?
4.Whatisanautomateddriver?
key
key
key
key
Keywordsandexpressions
1.lucrative:
Producingmuchmoney;profitable
生利的,赚钱的
Examples:
1.Manyex-armyofficershavefoundlucrativejobsinprivatecurityfirms.
2.Thisisalucrativebusiness.
3.Intheair
intheearth'satmosphere;uncertain,notyetdecided空气顺空中;悬而未决
Examples:
Thereisapeculiarsmellintheair.
Hundredsofbirdssuddenlyrointheair.
Ourplansarestillintheair.
4.startup
Example:
Peterlookedinhismirrorandstarteduptheengine.
5.alert
Examples:
Whyweren'tthepolicealerted?
Collocation:alertsb.;alertsb.tosth
Themanageralertedthestafftothecrisisfacingthecompany.
Theteacheralertedthestudentstothedangerofswimmingintheriver.
warnsb.thattheremaybedanger,trouble,etc
vt.使警觉,使警惕,使注意
6.prototype:
thefirstmodelordesignofsth.fromwhichotherformsarecopiedordeveloped原型,样品
Examples:
1.Manufacturersusuallybeginbybuildingtheprototypeofanewmodelbeforetheytupafactorytomakeupthecars.
2.Toyotareleaditssmall-carprototypein1947.