英语词汇提高Chapter.ppt

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1、Chapter9外国语学院杨莉萍2012年春alterv.tomakesomethingorsomeonedifferenteg.Thisdoesn’talterthefactthatwhatyoudidwaswrong.alterationn.eg.1)Theeditormadeafewminoralterationtothetext.2)Haveyounoticedanyalterationinherbehavior?alternativen.somethingthatyoucanchooseinsteadofsomethingelse供替代的选

2、择；供选择的东西eg.Thetreatmentisofferedasanalternativetosurgery.adj.(beforen.only)供替代的，可选择的eg.1)Wearenowlookingforanalternativeclassroom.2)Alternativemethodsofgettingtherewillbeinvestigated.syn：optionaladj.可以选择的，随意的Eg.Universitieshaverespondedtodemandsforstudentstohaveabetterknowledge

3、ofindustrybyofferingoptional business coursesinartsdegree.学生必须更好地熟悉工业，针对这一要求，大学已作出反应,在文科学位里，开设商业选修课。alternatev.ifonethingalternatewithanother,ithappensafteritandkeepsbeingrepeatedeg.1)Wetdaysalternatedwithdryones.2)Hismoodalternatesbetweenjoyanddespair.3)Laytheshapesonthefabric

4、,alternatingthecolours.交替,更迭；交替变化,(两者间)切换;使轮流alternatingcurrent交流电ampleadj.(usu.beforean.)1.enoughormorethanenoughinquantityorsize,orspace,etc.eg.Theyhaveamplemoneyforthejourney.Thereisroomforanamplegarden.2.abundant,plentifuleg.Heisamanofamplestrength.Hereceivedanamplesalaryfr

5、omthecompany.amplifyv.放大，扩大(声音)；详述，进一步阐明amplifiern.扩音器，扬声器形近词：sample??1.abundant:ismostlyrestrictedtoobservationsaboutaparticularplaceratherthanaparticulartime,usu.suggestingavaluedordesirablequantity.eg.Thereareabundantsuppliesoffirewoodintheforest.Thisisalandabundantinmineral

6、s.2.plentiful:relatestoadesirablequantityorevenasuperfluityofsth.eg.Thereisaplentifulsupplyoffishinthemarket.Onthisislandtheediblefruitissoplentifulthatitrotsonthevine.3.adequate:maysuggestthatnotonlyquantitybutalsoqualityisuptowhatisrequired,andcanbeusedbetweenanarticleandanab

7、stractnoun.eg.HisknowledgeofFrenchisadequateforthejob.Wehaveanadequatesupplyoffoodforthehike.4.enough:canneverbeappliedtoquality,isalwaysusedbeforepluralnouns,ofnounsdenotingsth.thatismeasurable,neverafteranarticle.eg.Theexpressionanadequateroomisokbutanenoughroomisunacceptable

8、.5.sufficient:suggeststhesameasenough,moreformal,andis