grammar 2.ppt

Translation Modalverbs canandbeableto etc can beableto can的形式只有can could两种beableto的形式有am is areableto was wereableto have hasbeenableto等多种Can一般能力Beableto经过努力后而达到的一定境界Mybrothercanplaytabletennis Mybrotherisabletodiveunderwaterfor10minutes shallwill Shall表达诺言 will表示决心或决定Don tworry Youshallhavetheticketsforthegames LiuMeiwillgoandbuytheticketsforthegames Shall 一 三人称 Will 二 三人称 1 Shallwegoswimmingthisweekend 2 Agroupofstudentsarewaitingtoseeyououtside Shalltheycomein 3 Willyougohikingwithmeinthemountains 4 Willhepayforme Page31PartB CheckyourAnswers 1 Shall 2 shall 3 Will 4 will shal 5 will shall 6 shall will mustn tneedn t mustn t 不准 不许 语气强烈needn t 不需要 没必要 语气缓和Youmustn tmissthisfootballmatch It sveryimportant Youneedn twatchthegameifyoudon twantto Mustwecleantheclassroom Yes youmust No youneedn t needdare 作为情态动词时 两个词常用于疑问句和否定句 用作实义动词时 可用于各种句式 情态动词时 NeedIhelpyou Yes please Youneedn ttelephonehimnow Howdareyoutalktotheteacherlikethat Thegirldarenotgooutaloneatnight 用作实义动词时 Weneedtotellhimthenews Youdon tneedtotellhimthenews Dotheflowersneedwatering Ididn tdaretotellyouthetruth Wouldyoudaretocatchthesnakewithyourhand Theboydarestodoanythinghelikes Page31PartA CheckyourAnswers 1 can 2 can could 3 will may might could 4 mustn t shouldn t can t oughtnotto 5 mustn t shouldn t can t oughtnotto 6 can 7 needn t shouldn t donothaveto 1 IsJohncomingbytrain Heshould buthe not Helikesdrivinghiscar 2002高考 A mustB canC needD may2 Ithasbeenannouncedthatcandidates 候选人 remainintheirseatsuntilallthepapershavebeencollected 2002上海 A canB willC mayD shall3 Iheardtheywentskiinginthemountainslastwinter 2002北京 It truebecausetherewaslittlesnowthere A maynotbeB won tbeC couldn tbeD mustn tbe 二 情态动词的特殊用法 1 情态动词表推测 must can could may might must所表示的可能性最大 最有把握 意为一定 can和could主要用于否定句和疑问句中 can t或couldn t表示 不可能 may和might表示现在或将来可能发生的动作或情况 主要用于肯定句中 might相对于may来说 表示的可能性更小一些 情态动词表示猜测时语气从强到弱的顺序是 must should can may could might 1 Mary beinParis forIsawherinthetownonlyafewminutesago A mustn tB can tC shouldn tD maynot 2 Peter comewithustonight butheisn tverysureyet A mustB mayC canD will 3 AreyoucomingtoJeff sparty I mnotsure I gototheconcertinstead A mustB wouldC shouldD might 4 It lastnight forthegroundwaswetthismorning A musthaverainedB mayhaverainedC mustrainD mightrain B B D A 1 表推测时一般有两种结构 情态动词 be和情态动词 havedone 1 情态动词 be表对现在或将来的状况进行推测 It salready12 30 Youmustbehungrynow 已经12点半了你现在一定饿了 Thelightisstillon Hemustbeworkingintheofficenow 灯还亮着 他现在一定还在办公室工作着 must may might can could havedone表示或许做过 不肯定 havedone表示肯定做过 2 情态动词 havedone表对过去事情的推测 2 情态动词 havedone结构用于对过去事情的推测 Ididn thearthephone Imusthavebeenasleep 我当时没有听到电话响 我一定是睡着了 MysistermethimattheGrandTheateryesterdayafternoon sohecouldn thaveattendedyourlecture 我姐姐昨天下午在大剧院见过他 所以他当时不可能去听你的报告会 2 情态动词 havedone结构用于对过去事情的推测 Youshouldhavewrittentohimearlier 你本应该早点给他写信 Youneedn thaveapologizedtohimfornothingyesterday 你昨天没必要无谓地向他道歉 2 情态动词表责备语气 should oughtto could might need常用来表示说话人对过去事情的不满或遗憾 带有较强烈的责备语气 should oughttohavedone本应该 表示过去应该做而 实际 没有做的事情 其否定形式为 shouldnot oughtnottohavedone Weshouldhavestudiedlastnight butwewenttotheconcertinstead 我们昨晚本应该学习 却去看了演唱会 HowIregrettedwastingthehoursinthenetbarwhenIshouldhavestudied 我真后悔把时间都浪费在了网吧里 那些时间我本应该用来学习的 2 could mighthavedone本来能够 表示过去本来可以做某事 但没有做到 一Ididn tgotoclasslastnightbecausemycarbrokedown 一Youcouldhaveborrowedmine Iwasn tusingit 一我昨晚没去上课 我的车坏了 一那你该借我的呀 我那时没用它 3 needn thavedone本来不需要 表示过去本来没有必要做某事 但却做了 Therewasplentyoftime Sheneedn thavehurried 当时时间很充足 她本没有必要那么匆忙的 语法专练 1 There snolighton they beathome 2006全国I 24 A can tB mustn tC needn tD shouldn t 2 一Shelooksveryhappy She havepassedtheexam 一Iguessso It snotdifficultafterall 2007江苏 22 A shouldB couldC mustD might C A 3 Musthecometosignthispaperhimself Yes he 2006广东 22 A needB mustC mayD will 4 IthinkI llgiveBobaring You Youhaven tbeenintouchwithhimforages 2006江苏 21 A willB mayC havetoD should D B 5 CouldIhaveawordwithyou mum Oh dear ifyou 2006浙江 19 A canB mustC mayD should 6 Ifitwerenotforthefactthatshe sing 1wouldinvitehertotheparty 2006福建 27 A couldn tB shouldn tC can