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1、1Unit5Canada---“TheTrueNorth”Learningaims1.Toanalysesomedifficultsentences.2.Tomastersomesentencestructures.3.Toputthemintopracrice.TheywerenotleavingforMontrealuntillater,sotheywentonatourofthecity.她们要晚些时候才动身去蒙特利尔,因此就在多伦多市内游览了一番。Languagepointsleaveforsp.动身去…leave…for…离开某地去某地leavesth.as
2、ide把…搁置一边askforleave请假NextFriday,heisleavingforLondon.WhyareyouleavingShanghaiforBeijing?Ihadtoaskforleavethatdaybecausemymotherwasill.Whynotleavethedifficultproblemasideandsolvetheeasyonefirst.1)Theywerenotleavingfor...属于过去进行时表示将来的动作。表示位置转移的瞬间动词。如:come,go,arrive,leave,start,return,stay
3、,meet,get等可用进行时表示将来的动作;用现在进行时表示一般将来时;用过去进行时表示过去将来时。Thetrainisarrivingsoon.火车就要进站了。2)until/till直到…为止until常与否定句连用,not…until直到…才Hedidn’tfinishtheworkuntilyesterday.肯定形式表示的意思是“做某事直至某时”,动词必须是延续性的。否定形式表达的意思是“直至某时才做某事”。动词为延续性或非延续性都可以。肯定句：Isleptuntilmidnight.我一直睡到半夜时醒了。WaittillIcallyou.等着我叫你。否定
4、句：Shedidn’tarriveuntil6o’clock.她直到6点才到。Don’tgetoffthebusuntilithasstopped.公共汽车停稳后再下车。否定句可用另外两种句式表示。a.notuntil…在句首,主句用倒装。Notuntiltheearlyyearsofthe19thcenturydidmanknowwhatheatis.直到19世纪初,人类才知道热能是什么。b.用于强调句Itisnotuntil…that…ItwasnotuntilItoldhimthatheknewaboutit.直至我告诉他，他才知道这件事。Itwas____ye
5、sterday___Iwaswrong.A.until;didIrealizeB.notuntil;didIrealizeC.until;thatIrealizedD.notuntil;thatIrealizedD2.It’stoobadyoucan’tgoasfarasOttawa…asfaras1)直到…远,远到…;2)(表示程度,范围)就…;据…；至于…as/sofarasIknow据我所知asfarasIamconcerned就我而言aslong/high/wide/deepas和…一样长,长达asmany/muchas多达sofar到目前为止byfar最…,
6、…得多(用于比较级或最高级前)Whydon’twewalkasfarastheendoftheroad?Thisriverisasdeepas50meters.Thisriverisasdeepasthatone.Ourschoollibraryhasasmanyas500,000books.AsfarasIknow,heisbyfarthebestplayerinourclass.Wehaveknownnothingaboutitsofar.用适当的介词或副词填空。1.Haveyougotanyideawhenweshallleave___Rome?2.Thisma
7、yoccurinareasofhighrainfallorincoastalareaswhereriversflow___theocean.3.Iusuallywalkalongthepathinthecountryside__________dusk.forintoat/around4.Wesetsail__dawnandheadedstraightforShanghai.5.Doyoumindifwediscussalittlebusiness____dinner?6.Myparentsoftenchat____meaftersupper.7.W
