北师大版高中英语选择性必修第一册UNIT 3 period 2课件.ppt

(2)与过去事实相反，谓语部分：would/could/might(not)havedonesth。Withoutyourhelp，Iwouldhavefailedtheexamlastweek.没有你帮助的话，我上周考试可能就通不过了。(3)与将来事实相反，谓语动词：would/could/might(not)dosth。Withoutyourticket，Iwouldn’tbeabletogototheconcerttomorrow.要是没有你的票，我明天就不能去听音乐会了。【语言提升】upto意为“高达”，表达“某个数量”，还可以表示：(1)“达到……程度”(2)“直到……为止”，相当于till或untiluptonow直到现在(常与现在完成时连用)uptothen直到那时(常与过去完成时连用)(3)“(体力或智力上)能胜任”(4)“是(某人)的责任，由……决定，取决于”It’suptosbtodosth做某事是某人的职责。/做某事由某人决定。It’suptosb＋whether/how/when...是否/如何/何时/……由某人决定。I’mafraidTimjustisn’tuptothejob.我恐怕蒂姆干不了这份工作。It’suptoyou.(交际用语)由你决定。Ourteamplayeduptoitsbestinthelastfootballleague.我们的足球队在上届联赛中发挥了最高水平。【针对练习】单句语法填空(1)Almostoneintenadmitsspendingup________threehoursoutsidetheirnormalworkingdaycheckingworkemails.(2)Uptonow，theprogramme________(save)thousandsofchildrenwhowouldotherwisehavedied.(3)Itisuptoyou________(decide)whentogoshopping.【答案】(1)to(2)hassaved(3)todecide10．beatrisk处境危险，受到威胁(P53)Ofcourse，aswehumansdependonsomanyspeciesforoursurvival，wewouldalsobeatriskofdyingout.【翻译】当然，由于我们人类的生存依赖如此多的物种，我们也会面临灭绝的危险。【语言提升】(1)atrisk(from/ofsth)有危险；冒风险(2)attheriskofdoingsth冒着……的风险(3)atrisktooneself/sb/sth冒着伤及……的危险(4)dosthatyourownrisk(常见于告示)自担风险；责任自负(5)runarisk(ofsth/ofdoingsth)冒风险；有……的危险(6)runtherisk(ofsth/ofdoingsth)冒……的危险；冒险(做某事)(7)takearisk/takeriskstodosth冒险(做某事)(8)reduce/cuttheriskof(doing)sth减少(做)某事的危险(9)lowertheriskof(doing)sth降低危险Valuablesareleftattheirowner’srisk.贵重物品需看管，否则风险自负。Investmentisallaboutrunningrisks.投资就是要冒风险。That’sariskI’mnotpreparedtotake.我不愿意去冒这个险。【针对练习】完成句子(1)Thismethodcanshortenthetimeofoperation，_________(减少手术风险)，andproduceasuitablerepairresultforpatients.(2)__________________(冒着失去积蓄的风险)，Jackinvestedinastart-upcompanythathebelievedin.【答案】(1)reduce/cuttheriskofoperation(2)ther