新人教版英语八年级下册Unit6-语法完整(unless--as-soon-as--sothat)PPT课件

Unit6语法专项课件（unless,assoonas,sothat的用法）,初中英语人教版八年级下册,.,3,unless的常见用法,unless引导条件状语从句，意为“除非，如果不”。unless=ifnot。,YoullfailinEnglishunlessyouworkhard.Wellmissthebusunlesswewalkmorequickly.,.,4,assoonas的常见用法,assoonas引导时间状语从句，意为“一就”。引导时间状语的连词包括when,while,until,till,before,after等。,AssoonasIhavefinished,Illgiveyouacall.IllwritetoyouassoonasIgettoBeijing.,.,5,sothat的常见用法,1.so形容词或副词that.引导肯定的结果状语从句，意思是“如此以致于”。,2.so形容词或副词that.引导否定的结果状语从句，意思是“如此以致于不能”。,ThesunshineissonicethatIwanttogoswimming.,sothat,ThecameraissoexpensivethatIcantaffordit.,.,6,易错点1,在时间状语从句和条件状语从句中，应该使用一般现在时代替一般将来时，简称“主将从现”原则。,unless/assoonas引导状语从句的“主将从现”原则,主祈从现,主情从现,.,7,易错点1,Wellbelateunlesswespeedup.IllreturnthebookassoonasIfinishit.,（主将从现）,（从现）,.,8,易错点1,Pleasecallmeassoonasyougetthere.,（主祈从现）,（从现）,.,9,易错点1,（主情从现）,Youcantpasstheexamunlessyoustudyhard.,（主情）,.,10,易错点2,一般情况下，unless相当于ifnot，可以互换，遵循“主将从现”原则。,Iwontletyouinunlessyoushowmeyourpass.,unless与ifnot,Iwontletyouinifyoudontshowmeyourpass.,.,11,易错点3,结构不一样,sothat/sothat的区别,sothat后跟句子（目的状语从句/结果状语从句）sothat的结构为：so形容词或副词that从句,.,12,易错点3,sothat引导结果状语从句（因此、所以）或目的状语从句（以便、为了）。sothat只可以引导结果状语从句（如此以致于）。,表达含义不一样,.,13,易错点3,Thespeakerspeaksloudlysothatallofuscanhearhim.Marialikesthisdresssothatshedecidestobuyitatonce.,TheboyransofastthatIcouldntcatchhim.,(目的状语从句),(结果状语从句),(结果状语从句),.,14,【典例1】_youvetastedthem,youcantimaginehowdeliciousthedishesare.A.BecauseB.AlthoughC.WhenD.Unless,考查连接词。句意：如果你不尝一尝，你就想象不到这些菜有多美味！because因为，although尽管，when当时候，unless如果不，根据题意只能选unless。,.,15,【典例2】Assoonashereturnstohometown,he_hisgrandparents.A.visitB.visitsC.willvisitD.visited,考查连接词assoonas的用法。句意：他一回到家乡，就去看望他爷爷奶奶了。assoonas引导的从句“主将从现”，主句选一般将来时willvisit。,.,16,【典例3】Davidwas_careless_hedidntfindthemistakesinhistestpaper.A.to