由到情况不等

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1、Unit4Wordstudy1.varyvi.(bedifferentinsize,volume,strength,etc;changeaccordingtosomefactors)e.g.Thetwopairsofshoesvaryinprice.Thepricesofsomegoodsvarywiththeseason.Hismoodvariesfromdaytoday.Thatsortofthingvariesfrompersontoperson.Variousadj(ofseveralkinds)Varietyn.变化，多样化e.g.Healwayshasv

2、ariousexcusesfornotfinishingtheassignment.Hehadavarietyofinterestswhichoccupiedhimalotoffreetime.varyfrom…to…由…到…情况不等Theseapplesvaryinsizefromsmalltomedium.Translation:我校学生的年龄从１４岁到１８岁不等．Thestudentsinourschoolvaryinagefrom14to18yearsold.2.fallin/on月,年;日；恰逢…,落在….WhatdaydoesChristmasfallo

3、n?ThedateofHalloweenfallsinOctober.Itfellonmetoopentheexhibitioninthemayor’sabsence.Itwillfallontheprincipaltomakethedecision.将由校长来作出决定Somestudentshavefallenintothehabitofusingcellphoneseverynight.Becausetheroadisslippery,wefellover.Studyhardoryouwillfallbehindothers.Someofthestudentsw

4、illfallasleepthemomentclassbegins.Eastereggs3.Observe1)watchcarefullye.g.Helikesobservingthebehaviorofbirdssinceanearlyage.2)obeyrules,laws,etce.g.Weshouldstrictlyobservethetrafficrules.3)celebrate(festivals,birthday,anniver-sary,etc)e.g.DoyouobserveChristmasinChina?4.BankHoliday:Briti

5、shbankholidaysarePublicHolidaysandhavebeenrecognizedsince1871.ThenameBankHolidaycomesfromthetimewhenbankswereshutandsonotradingcouldtakeplace.TraditionallymanybusinessescloseonBankHolidaystoenabletheworkerstohaveaholiday.Thistimeisoftenspentwiththefamilyonminibreaksandoutings.Becauseof

6、this,anyonewhoworksonBankHolidaysusuallygetspaidextra–"time-and-a-half"oreven"doubletime,"negotiatedforthembytheTradesUnions.5.majoradj.主要的(作定语)反义:minor次要的amajorroad干路/majorachievements主要的成就majorn.principalsubjectofastudentatcollegeoruniversityHeplannedtotakePhysicsashismajor.Heisahist

7、orymajor.majorinspecializeinacertainsubjectatcollegeoruniversityChristinamajoredintwosubjectsatHarvardUniversity.majorityn.大多数，大半minorityn.少数Themajorityofdoctorsbelievesmokingisharmfultohealth.Onlyaminorityofpeoplesupportthesenewlaws.6.tripn.usushortjourney,espforpleasure(会回到出发地)eg.t