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1、Unit6Anoldmantriedtomovethemountains.SectionAGrammarFocusHowdoesthestorybegin?Whathappenednext?WhywasYuGongtryingtomovethemountains?WhoistheMonkeyKing?Whatcan'ttheMonkeyKingdo?Onceuponatime,therewasaveryoldman...GrammarFocusAssoonasthemanfinishedtalking,YuG
2、ongsaidthathisfamilycouldcontinuetomovethemountainsafterhedied.Becausetheyweresobigthatittookalongtimetowalktotheotherside.HeisthemaincharacterinJourneytotheWest.Hecannotturnhimselfintoapersonunlesshecanhidehistail.Conditionalclauseswithifandunless含有if的复合句由
3、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).floatsUnless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
4、，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,wewon’ttakeahiketomorrow.Hewillgetupschoolontimeiftheclockgoesoff.IfhearrivesinHongKong,hewillcallme.Ifyoudon’tstartearly,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
5、相似，相当于if…note.g.Youwillfailtheexamifyoudon’tprepareforit.→Youwillfailtheexamunlessyouprepareforit.Ifhedoesn’tlookupthewordinthedictionary,hewon’tknowitsmeaning.→Hewon’tknowtheword’smeaningunlesshelooksitupinthedictionary.Shewillmissthetrainunlessshe_______u
6、pearly.getsif和unless的用法一般情况下，unless相当于if…not，可以互换。用一般现在时代替将来时。Iwon'tletyouinunlessyoushowmeyourpass=Iwon'tletyouinifyoudon'tshowmeyourpass.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，if…not结构不能换成unless。如：I'llbequitegladifshedoesn'tcomethisevening.她今晚如果不来我很高兴。1.U
7、nless you take more care, you’ll have an accident.如果不多加小心的话，你会出事故的。2.My baby sister never cries unless she is hungry.我那刚出生的妹妹除非饿了，否则她是从来不哭的。3. Don’t promise anything unless you’re 100 percentsure.不要作任何的许诺, 除非你有百分百的把握。 4. Unless bad weather stops me, I jog e
8、very day.(除非坏天气作梗，每天我都慢跑。)误:Don'tcomeinunlessyouwillbeinvitedto.正:Don'tcomeinunlessyou'reinvitedto.误:Unlesshewillcome,wewon'tbeabletogo.正:Unlesshecomes,wewon'tbeabletogo.Assoonas的用法英语动词的时间大致可分为三段：过去时、现
