高考英语常考句式《状语从句中的省略现象》ppt课件.ppt

难 点 诠 释典 型 例 题考点6 状语从句中的省略现象 当状语从句的主语和主句的主语一致时，可以省略状语从句的主语和系动词be,这时从句中可出现如下结构:连词(as,as if,once)+名词Once(he was)a teacher,he now works in a government office.从前他曾经当过老师，现在他在政府部门工作。连词(though,whether,when)+形容词Work hard when(you are)young,or youll regret.年轻时努力工作，否则你会后悔的。连词(whether,as if,while)+介词短语He looked everyone as if(he was)in search of something.他到处看好像在找什么东西。难点诠释 连词(when,while,though)现在分词While(I was)walking along the street,I heard my namecalled.当我沿着马路走时，听到有人喊我的名字。连词(when,if,even if,unless,once,until,than,as)+过去分词The exhibition is more interesting than(it was)expected.展览比预计的更有趣。连词(as if,as though)+不定式He opened his lips as if(he were)to speak.他张开嘴好像要说话。难点诠释 当从句的主语是it,谓语动词中又含有系动词be时,可以把it和系动词一起省略。此时构成“连词(if,unless,when,whenever)+形容词”的结构。Unless(it is)necessary,youd better not refer to the dictionary.除非有必要，你最好不要查词典。我们还可以用so或not代替上文内容，此时可用if+so/not省略句式。Get up early tomorrow.If not(you dont get up early),you will miss the first bus.明天早点起。否则(如果不那样),你会错过头班车。He may not be at home then,if so(he is not at home),leave him a note.那时他可能不在家。如果那样，就给他留个纸条。难点诠释 Film has a much shorter history,especially when_ such art forms as music and painting.(2012 课标.全国I,32)A.having compared to B.comparing toB.C.compare to D.compared to 句意：对比音乐和绘画的艺术形式的历史而言，电影的历史较为短暂。when引导的状语从句补充完整应是when it is compared topainting.由于主句的主语和从句的主语相同，并且从句中有系动词be,所以从句中可省去主语和be动词。答案:D典型例题 How is the man injured in the earthquake?The doctor said if _in a proper way,he was likely to be saved.A.treated B.treating C.is treated D.to be treated 答句中said后面是宾语从句。宾语从句的状语部分是if状语从句的省略。其完整形式为：if he was treated in a proper way。答案:A典型例题 Peter is not working this week.You can ring him at home_.A.if necessary B.if so B.C.if true D.if any 句意：彼得这星期没有上班。如果必要的话，你可以打电话到他家。所填状语部分是省略形式,其完整形式为if it is necessary。答案:A典型例题