Unit4FunwithscienceGrammarandusageSubjunctivemood(I)课件高中英语牛津译林版（2020）选修第一册

Unit4

FunwithscienceGrammarandusageSubjunctivemood(I)mushroomtackletheproblemcaterforone'sneedsbringintousedomesticallyandinternationallyupgradeaproposalforbeunderreviewv.快速增长解决问题满足...的需求付诸使用国内外升级一个...的提议正在(被)审查中Step1

WarmingupReadthearticleonP34andtranslate:(1)Whatdoestheauthorthinkofthetransportsysteminthecity?Effective.(2)Whenwastheundergroundbroughtintouse?Tenyearsago.(3)Howmanytransportoptionshavebeenmentionedintheblogpost?Whatarethey?Four.Buses,theunderground,airtransportandriverferries.ReadthearticleonP34andanswerthefollowingQs.Step2

WarmingupFindthesentenceswithunrealconditionalsintheblogpostandfillin

thetable:PresentPastFutureMixedIfthecityhadn'tbuilttheundergroundsystem,gettingaroundwouldn'tbesoconvenient.Ifthisairporthadn'tbeen...,ourcitywouldn'thaveattracted

Ifabiggerairportwere...,thetravellerexperienceshouldbegreatlyimproved.Iftheylivedinourcity,theycouldusetheferryfromtimetotime.Step2ExploringandworkingouttherulesFinish“Workingouttherules”ofpartAonP34.imaginaryhad(been)doneFuture主从句构成意义虚拟条件句主句与现在事实相反与过去事实相反与将来事实相反did/werewould/should/could/might＋动词原形had＋donewould/should/could/might＋have＋done1.did/were2.should＋动词原形3.wereto＋动词原形would/should/could/might＋动词原形Step3

ApplyingtheruleswerewouldarrivehadbeenwouldmightnothavebeenwereFinishB2onpage35ofthetextbook.

Suggestedanswers:

1)c

2)b

3)e

4)a

Step3

ApplyingtherulesP35:infrustrationinstalladaptivetrafficflowenormouslytimingcyclesafluidstreamemissionatpeaktimePartBonP67hadtakenwouldhappenwouldimprovehadlefthadfollowedkeptwouldachieveShouldloseWeretoloseUnit2WorkingthelandGrammarandusageSubjunctivemood(II)revolutionizecrystalstructuredevelopafascinationwithcapturebeautyonfilmfinedetailsbynomeanstriumphfeatureinsightinto彻底变革晶体结构对...着迷用胶片捕捉美精美的细节绝不伟大成就v.以...为特色对...的深入理解Step1

WarmingupReadthearticleonP48andtranslate:(1)

Whyisthesaying“notwosnowflakesarealike”mentionedinparagraph1?(2)

HowdidWilsonBentleycapturetheworld’sfirstimageofasinglesnowflake?(3)WhatqualitiesdoesWilsonBentleyhave?ReadthearticleonP48andanswerthefollowingQs.Step2

Warmingup(1)

Whyisthesaying“notwosnowflakesarealike”mentionedinparagraph1?Tointroducethe“SnowflakeMan”:WilsonBentley.(2)

HowdidWilsonBentleycapturetheworld’sfirstimageofasinglesnowflake?Attachinghiscameratoamicroscope,settinguphisequipmentoutside,handlingeach

snowflakewithafeather,andphotographingitwitha90-secondexposure.(3)WhatqualitiesdoesWilsonBentleyhave?Hewasapersonwithgreatdeterminationandpersistence.Step2ExploringandworkingouttherulesFindthesentencesusingthesubjunctivemoodinthestory.1.Itisimportantthathe(should)berememberedfor...2.Hewishedthathecouldcapture...3....,otherwisethesnowflakeswouldhavemeltedquickly.4....,asthoughhewerediggingupburiedtreasure.5.ButforBentley’stirelesswork,wewouldnotknowthat...Finish“Workingouttherules”ofpartAonP48.butforshould含蓄条件句（1）有时假设的情况不用条件句表达，而是用butfor(要不是)，

without等介词（短语）来表示。（2）用连词otherwise，

or等暗示后文与前面的情况相反，从而引出后文的虚拟语气。I’mbusynow.Otherwise/OrIwouldhelpyouwithyourwork.Wewouldn'thavefinishedtheprojectontimewithoutyourtimelyhelp.如果没有你的及时帮助，我们就不能按时完成那项工程了。二、虚拟语气用于名词性从句中的4种条件It'svitalthatwe（should）takeoursafetydrivingalongtheroadseriously.重视道路安全驾驶是至关重要的。1.在“Itis＋important/necessary/natural/strange/essential/vital/apity＋that...”句型中，谓语动词用“（should＋）动词原形”。2.在wouldrather（that）后的宾语从句中，从句的谓语动词如果表示现在或将来要发生的动作，从句用一般过去时；如果表示过去发生的动作，从句用过去完成时。I'dratherhe__________(go)totheseasidewithmethedaybeforeyesterday.3.句中含有以下单词或其变形时，该句中的名词性从句（宾语从句、表语从句、主语从句、同位语从句）部分常用虚拟语气，其谓语动词形式为“should＋动词原形”，其中should可以省略。hadgone

advocateIwishit_______(be)springalltheyearround.我希望整年都是春天。IwishI_____________(know)theanswer.我希望知道答案。(事实上当时不知道)Iwishhe___________(fly)tometomorrow.我希望他明天能飞到我身边。werehadknowncouldfly过去式或“should＋动词原形”Itis（high）time（that）...would/could/should/might＋动词原形过去式（be动词一般用were）had＋过去分词asif/though引导的表语从句及方式状语从句would/could/should/might＋动词原形过去式（be动词一般用were）had＋过去分词ifonly引导的条件句及感叹句将来虚拟现在虚拟过去虚拟句型结构Readmoreexamplesandfurtherunderstandtherules.(1)Itisnecessarythattheproblem(should)besettledatonce.(2)IwishIwereapilot.(3)Mymotherlooksaftertheorphanasifhewereherownchild.(4)Isuggestthatwe(should)holdameetingtonight.(5)IfonlyIhadrememberedtosendyouanemail.(6)Wecouldnothavedonetheworkwellwithoutyourhelp.(7)

Hehelpedmealot,otherwiseIwouldn’thavefinishedmyworkontime.Step3

ApplyingtherulesB1onP49wouldhavehadwere(should)conductwouldbe/wereFinishB2onpage49ofthetextbook.

Suggestedanswers:(1)(had)examined(2)(should)understand(3)wouldnotexist(4)wo