新人教版选修8-unit5-重点单词和短语.ppt

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1、Unit5Meetingyourancestors1.alternative①adj.供选择的；其他的e.g.Thewaywasblocked,sowehadtogobyalternativeroad.②n.[C]二选其一；可供选择的东西；替代物1）analternativeto...…的替代品2）havenoalternativebuttodosth.别无选择只好做……3）Thereisnoalternativebuttodo...别无选择havenochoicebuttodosth.=havenothingtodobutdo…拓展：除了放弃那个计划，我别无选择。Ihavenoalterna

2、tivebuttogiveuptheplan.=Ihavenochoicebuttogiveuptheplan.=Ihavenothingtodobutgiveuptheplan.1)Wehave___________________________________.除了继续下去，我们没有选择的余地。2)Thereis______________________________.除了战斗，没有其他的办法。noalternativebuttogoonnoalternativebuttofight辨析：alternative,choice与selectionalternative一般强调在只有两种

3、可能性或者行为方式之间所做的选择。choice泛指从一组人或物中进行的自由选择，指选择、挑选、抉择。selection含有可供选择的许多不同的人或物的意思，尤指选拔。①Youhavean__________:Leavewithyourmoney,orstaytohelpme.②Thestoreoffersawide________offruitsandvegetables.③Parentsshouldbecarefulintheir________ofthemoviestheiryoungchildrensee.alternativechoiceselection即学即用（1）你可以结婚也可以

4、仍做单身汉，任你选择。Youmarryingorremainingabachelor.（2）我提议这次假期不是爬山就是到海边去。Iofferedspendingthevacationinthemountainsorbythesea.（3）你有没有别的办法来解决这个问题？Doyoutotheproblem?havethealternativeofthealternativesuggestionsofhaveanalternativesolution2.interruptvt.打断…讲话；暂时中断或中止①Thewarinterruptedthetradebetweenthetwocountries

5、.②Sorrytointerruptyou,butIhavesomethingtosay.(1)Don’t_____________mewhileI’mbusy.我正忙着，不要打搅我。(2)Trafficinthecity__________________asnowstorm.市内交通被暴风雪所阻断。(3)I’msorryto____________you,butcouldyoutellmethewaytothehospital?对不起，打扰了，你能告诉我去医院怎么走吗？interruptwasinterruptedbyinterrupt辨析：interrupt与disturbinterru

6、pt强调“打断，使……不能继续”。disturb强调“打扰，打搅”，有“使……心烦，使……不安”之意。[活学活用]对比填空(1)Heissleeping.Donot________him.(2)It'simpoliteto________others.disturbinterrupt拓展：Interruptionn.中断，打断withoutinterruption不间断地即学即用（1）电话铃声打断了他的谈话。（2）如果你起得早，尽量不要打扰别人。Hewasinterruptedbytheringingofthetelephone.Ifyougetupearly,trynottodisturbe

7、veryoneelse.3.assumevt.假定，设想；承担(1)assumesb./sth.tobe假定/假设某人/某事为…(2)Itisassumedthat...被认为Ihadassumedhimtobeaprofessor.Itisgenerallyassumedthatstressiscausedbytoomuchwork.(3)assumesth.假装,设想承担Heassumedag