时间状语从句37393ppt课件

AdverbialClauses 状语从句 1 AdverbialClausesofTime 时间状语从句 DifferentKindsofAdverbialClauses 2 AdverbialClausesofReason 原因状语从句 3 AdverbialClausesofConditions 条件状语从句 4 AdverbialClausesofPlace 地点状语从句 5 AdverbialClausesofPurpose 目的状语从句 6 AdverbialClausesofResult 结果状语从句 7 AdverbialClausesofComparison 比较 8 AdverbialClausesofConcession 让步 9 AdverbClausesofManner 方式状语从句 I 时间状语从句 when while as after before since until till assoonas hardly scarcely when nosooner than everytime eachtime themoment theminute thesecond bythetime immediately 一 when while as When 1 延续性动词e g WhenIwasyoung Ilikeddancing 2 瞬间性动词 不能用while e g Itwassnowingwhenwegottotheairport 3 表示 这时 正在这时候 e g Iwaswalkingonthestreetwhensuddenlysomeonepattedmeontheshoulder 4 主从句动作先后发生 不能用while e g WhenIgottothecinema thefilmhadalreadybegun While 1 延续性动词e g WhileIslept athiefbrokein 2 表示两种情况对比 然而 而 e g Theyweresurprisedthatachildshouldworkouttheproblemwhiletheythemselvescouldn t 3 表示 趁着 时候 强调主从句动作同时发生 e g Strikewhiletheironishot As侧重主从句动作同时发生 常译为 一边 一边 e g Thestudentstooknotesastheylistened 随着 e g Astimegoesby wehavegainedmoreandmoreknowledge 注意若主句谓语是短暂性动作 从句用延续性动词的进行时态表示在一段时间内正在进行的动作时 三者可以互换 When While AswewerehavinganEnglishclass astrangerbrokein Practice lwaswalkingdownthestreet Isawsomepolicemen theyheardthenews theyweresurprised Theyshoutedslogans theypassedthesquare When While As When as 二 before 常见句型 Itwillbe 一段时间 before Itwas 一段时间 before Itwon tbelongbefore Itwasn tlongbefore 肯定句意为 多长时间后才 否定句意为 用不了多长时间就 Itwillbealongtimebeforewefinishthisdictionary 我们需要很长的时间才把这部词典编译完 Itwasnotlongbeforethethiefwascaught 小偷不久就被抓住了 beforeItwillbehalfayearbeforeIcomeback Itwon tbehalfayearbeforewemeetagain Wesailedfourdaysandnightsbeforewesawtheland Wehadn trunamilebeforehefelttired 肯定句 才 否定句 就 itwillbe 一段时间before 多久之后才 itwon tbe 一段时间before 不久就 1 Scientistssayitmaybefiveorsixyears itispossibletotestthismedicineonhumanpatients 2 Hewastoldthatitwouldbeatleastthreemonths hecouldrecoverandreturntowork 3 Someonecalledmeinthemiddleofthenight buttheyhungup Icouldanswerthephone before before before 三 after 例 1 HecametoseemeafterIarrived 2 Immediatelyafterhewashurt hewastakentothehospital 注 before和after引导的状语从句 主从句发生的动作先后顺序很明确 因此after从句中的谓语动词常常使用一般过去时来代替过去完成时 Afterhe had finishedhishomework Tombegantoplaycomputergames 三Since 注意since引导的时间状语从句 主句常用完成时 从句常用一般过去时 Hehaswrittentomefrequentlysincehewasill 句型Itis hasbeen 一段时间 since 如果从句是延续性动词 用一般过去时和现在完成时不同 Itis hasbeentwoyearssincehewasinthearmy 他离开军队两年了 Itis hasbeentwoyearssincehehasbeeninthearmy 他当兵两年了 1 Howlong theshop open Since1992 Since15yearsago 2 Sincewhen thecountry opentointernationaltrade 1978 Isuppose 3 5years hegraduatedfromcollege 2years hesmoked has been has been Itis since Itis since Practiceitis 时间 sincebeforewhenthatItisfiveyears hefinishedhisresearch Itwasfiveyears hefinishedhisresearch Itwasfiveyearslater hefinishedhisresearch Itwas5o clock hegothome Itwasat5o clock hegothome when that since before that 四 名词词组引导的状语从句一些表示时间的名词词组 如 themoment eachtime everytime thefirsttime theyear等 也用于引导时间状语从句 这时它们担当着连接词的功能 hewenttoShanghai hepaidavisittohisformerteacher A ForthefirsttimeB Thefirsttime lsawhim Ithoughtofhisfather A ThemomentB Atthemoment Thefirsttime Themoment Eachtimehecame hewouldbringusalotofflowers DidyouremembertogiveMarythemoneyyouowedher Yes Igaveittoher Isawher themoment theminute theinstant Practice1 WheneverytimeIwasintrouble hewouldcometohelpme 2 Atnexttimeyoucome dorememberbringyoursonhere 3 ForthefirsttimeImetthegirl Ifeltinlovewithher 4 Youarewelcometocomebackatanytimeyouwantto 5 AtthelasttimeshesawJames hewaslyinginbed 语法规则 everytime eachtime nexttime thefirsttime anytime等名词短语引导状语从句不加介词 关连词组hardly scarcely whennosooner thanassoonas三种句子结构表示 一 就 注意 时态assoonas以一般时态代替将来时态nosooner hardly scarcely后的句子用过去完成时 than when后的句子用一般过去时 倒装当hardly或nosooner位于句首时 要倒装 五 一 就 我一到达上海就给你打电话 时态要求 改错 Ihardlygothomewhenitbegantorain时态要求 IwillcallyouassoonasIarriveinShanghai had 以一般现在时代替将来时 主句用haddone 从句用did nosooner than hardly when scarcely when Hehadhardlyarrivedwhenitbegantosnow Hardly whenitbegantosnow Wehadhardlywalkedintothehallwhenthelecturestarted Hardly walkedintothehallwhenthelecturestarted shegonetosleepthanthetelephonerangoncemore theboyreachedthedoorthanhecameback hadhearrived hadwe Nosoonerhad Nosoonerhad 倒装 六 until till until till 直到 止 肯定句 主句是延续性动词 I llwaiteuntil tilltheconcertisover till不能放在句首 但是until了的位置不受限制 not until 直到 才 hedidn tleavetheofficeuntilhefinishedthetask 注意 倒装句 强调句 及位于句首时 只能用until NotuntilIreturneddidshefinishherhomework ItwasnotuntilIreturnedhomethatshefinishedherhomework 1 Themeetingdidn tstart everyonewasthere A becauseB untilC whyD if2 Theboy tobed hismothercamein wentnot untilB didn tgo afterC went untilD didn tgo until Practice1 MotherwaitedforTomtill untilfarintothenight 持续性动词 2 Tomdidn tgetbacktill untileverythingwasallright 短暂性动词 everythingwasallright everythingwasallright Tomgotback Notuntil didTomgetback Itwasnotuntil that 六 bythetime引导的从句 Bythetimewegottothestation thebus left Bythetimeyoureceivethisletter I leftthiscityformyhometown had willhave 小结练习1 Theywalkedoutoftheroom themeetingwasover 2 Theymuststayinschool theyaresixteen 3 Takethemedicine yougotobed assoonas bythetime before 4 Iknewnothingaboutit hetoldme 5 Itismorethanfiveyears westartedtolearnEnglish 6 hetalkedon hegotmoreandmoreexcited 7 Weshouldstrike theironishot until since As while 1 IwaswaitingforthebuswhileImethim 2 Whilehewasd