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sectionAgrammar,八下英语Unit6Anoldmantriedtomovethemountains.,GrammarFocus,Conditionalclauseswithifandunless,含有if的复合句由两个分句组成；if为连词，引导条件状语从句，另一句为主句。,如果谈论的是某一个动作发生后势必会产生某个结果，那么主从句都用一般现在时态。,e.g.Ifyouboilwater,itbecomessteam.Ifyoudropaglass,itbreaks.Ifyouheatmetal,itmelts.Ifyourun,yousweat.,Ifyouputwoodintowater,it_(float).,floats,Unless的用法,如果谈论的是如果某一个动作或事情发生后，很可能将会产生某种结果，那么在复句中主句的动词用一般将来时，而if从句仍然是一般现在时。,e.g.Ifitrains,wewonttakeahiketomorrow.Hewillgetupschoolontimeiftheclockgoesoff.IfhearrivesinHongKong,hewillcallme.,Ifyoudontstartearly,you_thebeginningofthefilm(miss),willmiss,若if条件句放句首，从句后面要加逗号，和主句隔开。unless与if用法相似，相当于ifnot,e.g.Youwillfailtheexamifyoudontprepareforit.Youwillfailtheexamunlessyouprepareforit.Ifhedoesntlookupthewordinthedictionary,hewontknowitsmeaning.Hewontknowthewordsmeaningunlesshelooksitupinthedictionary.,Shewillmissthetrainunlessshe_upearly.,gets,if和unless的用法一般情况下，unless相当于ifnot，可以互换。用一般现在时代替将来时。Iwontletyouinunlessyoushowmeyourpass=Iwontletyouinifyoudontshowmeyourpass.如果你不出示通行证，我就不让你进来。如果主句描述的是情感或情绪活动方面的内容，ifnot结构不能换成unless。如：Illbequitegladifshedoesntcomethisevening.她今晚如果不来我很高兴。1.Unlessyoutakemorecare,youllhaveanaccident.如果不多加小心的话，你会出事故的。,2.Mybabysisternevercriesunlesssheishungry.我那刚出生的妹妹除非饿了，否则她是从来不哭的。3.Dontpromiseanythingunlessyoure100percentsure.不要作任何的许诺,除非你有百分百的把握。4.Unlessbadweatherstopsme,Ijogeveryday.(除非坏天气作梗，每天我都慢跑。)误:Dontcomeinunlessyouwillbeinvitedto.正:Dontcomeinunlessyoureinvitedto.误:Unlesshewillcome,wewontbeabletogo.正:Unlesshecomes,wewontbeabletogo.,Assoonas的用法,英语动词的时间大致可分为三段：过去时、现在时、将来时。假设有两件事A和B，就会出现三种情况：A过去时assoonasB过去时A现在时assoonasB现在时A将来时assoonasB将来时在每一个大的时间段内，A和B的时态要统一。比如A过去时，B肯定在过去时内。其它也是如此。至于在每个大时间段内，再根据A和B两件事的具体情况，具体对待。比如：A和B都是过去时，A和B是同时发生，还是先后发生，不是即将发生，再分别选用完成时、进行时、将来时。例如：,A过去时B过去时：IarrangedtheflowersinthevaseassoonasIcamebackhome.一回到家里，我就把花在花瓶里插好。A过去进行时B过去完成时(虚拟)Hewasshakingwithfrightasifhehadseenaghost.他吓得直哆嗦，就好像看见了鬼一样。A将来时B将来时(可用一般现在时表达)Theywillpostmethetickets/posttheticketstomeassoonastheyreceivemycheque.他们收到我的支票后就立刻把票寄给我.,assoonas连接的时间状语从句中，指未发生的动作。规律是：主句一般将来时，从句用一般现在时代替一般将来时。如：Iwilltellhimthenewsassoonashecomesback。指紧接着发生的两个短动作，主从句都用一般过去时如：HetookouthisEnglishbooksassoonashesatdown.就这两种情况，熟记就行。在宾语从句中，当主句为与过去时的时候，从句必须用与主句相对应的时态，所以为了与主句动词said呼应，时间状语从句中的willlookup应该对应为过去将来时态wouldlookup，finds对应为found。,so.that.如此.以致于.(that引导的结果状语从句)so的后面跟副词或形容词例句：老师说的太快了，以至于我听不清楚他的话。TheteacherspeakssofastthatIcantcatchthewords.,sothat的用法,比较sothat与sothatSothat:（1）引导结果状语从句，意为“因此，所以”，主句和从句间常用逗号分开，一般不与情态动词连用。Nothingmorewasheardofhim，sothatpeoplethoughtthathewasdead.未再听到他的消息，以致人们认为他已死去了。（2）引导目的状语从句，意为“为了，以便”，通常从句中用may，might，can，could等情态动词。Weleftearlysothatwecouldcatchthefirstbus.我们很早出发，以便能赶上第一班汽车。,1._herfatherdied,thestepsistersmadeherdoallthechores.2.Shewas_busy_shehadnotimetomakeadressfortheparty.3.Themiceknewthat_theyhelpedhermakeadress,shewouldnotbeabletogototheparty.4._theprincesawher,hefellinlovewithher.,4a.Fillintheblankswithunless,assoonasorso.that.,Assoonas,sothat,unless,Assoonas,5.Theprinceknewthat_thegirlsfootcouldfittheshoe,itwasnottherightgirl.6.Thenewcouplewere_happy_theycouldntstopsmilingwhentheygotmarried.,unless,sothat,TheMonkeyKingisthemaincharacterfromthefamousChinesestoryJourneytotheWest.Heiswonderfulbecausehe_(help)weakpeople.TheMonkeyKing_(have)amagicstick.He_(use)ittofightbadpeople.Hecan_(make)thestickbigorsmall.Hecansometimesmakethesticksosmallthathe,4b.Fillintheblankswiththecorrectformsoftheverbsinbrackets.,helps,uses,make,has,canputitinhisear.Assoonashe_(see)badpeople,hethinksofwaystofightthem.Hecan_(turn)himselfintodifferentanimalsandobjects.Butunlesshecanhidehistail,hecannotmakehimselfahuman.Childrenallovertheworld_(love)theMonkeyKing!,sees,turn,love,4c.Tellyourpartneraboutyourfavoritestory.,Myfavoritestoryis.Itisinterestingbecause,他努力学习，以便取得好成绩。Heworkshard_hecangetgoodresult.2.老师写得很仔细，是为了让我们看得清楚。Theteacherwrotecarefully_wecouldseeclearly.3.他太伤心了，以致说不出一个字来。Heis_hecantsayaword.4.妹妹身体太弱了，不能再走了。Mysisteris_shecantwalkfarther.,sothat,sothat,sosadthat,soweakthat,一、用sothat填空。,二、按要求转换下列句型1.Jimdidhishomeworklastnight.(改为否定句)Jim_hishomeworklastnight.2.DidshestudyJapanese?（作肯定回答）_,she_.3.Theydliketomatoes.（改为一般疑问句）_they_tomatoes?4.TheywatchedTVlastnight.(改为一般疑句)_theywatchTVlastnight?,didntdo,Yesdid,Wouldlike,Did,三、用所给词的适当形式填空.1.Listen!She_(sing)ABCsong.2.Theyusually_(go)shoppingonSaturdaybutthey_（notdo）ityesterday.3.We_(talk)abouttheproblemlastSaturday.4.I_(be)nothereyesterdaybutyou_here,_you?5.He_（clean）hisroomlastSunday.,issinging,go,didntdo,talked,was,were,werent,cleaned,Homework,Useunless,assoonasandsothattomakeasmanysentencesaspossible.,ThankYou!,
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