聚焦高考题-透视as考点课件

英语,语法解析,聚焦高考题，透视,as,考点,as,引导非限制性定语从句时，指代逗号前的整个句子（即先行,词），常翻译为“正如，正像”，可置于句首或句末。（注：,which,只能放在句中）。,eg._is reported in the newspaper,talks between the two,countries are making progress.(,北京卷,),A.It B.As C.That D.What,解析：,B,。,as it reported,意思是“正如所报道的”。,What,只能引,导名词性从句。,That,只能引导非限制性定语从句。如果用,It,句,子应该是：,It,is reported in the newspaper,that,talks between the,two countries are making progress.,一,.as,做关系代词，引导非限制性定语从句,as,引导非限定性关系从句,对前述内容作补充，意为“正如，,本情况,该事实“等，位置主句前后均可。,eg.1.She has married again,as was expected,.,她已再婚,这是意料中的事。,2.,As anyone can see,We are tired.,我们累了,这是有目共睹的。,as,引导非限制性定语从句 小结,在,as,做关系代词，引导限制性定语从句,这一用法中，关系代词,常出现在,the same as,such as,soas,asas,等结构中。,eg.His plan was,such,a good one _ we all agreed to accept,it,.,(,陕西卷,),A.as B.that C.so D.and,解析：,B,。尽管句中有,such,但从句中,accept,后面有宾语,所以这,是,suchthat,引导的结果状语从句，意为,“,如此,以至于”。,用,as,需要把句子改写成：,His plan was,such,a good one,as,we all,agreed to accept.“as”,引导定语从句在从句中充当成分。,二,.as,做关系代词，引导限制性定语从句,as,与,such,the same,as,等连用,引导限定性关系从句,意为“与,相同的事物,(,或人,)”,，修饰先行词，而且在从句中要充当成分。,1.It is,such,an easy book,as,he can read.,这是一本他能读的容易懂的书。,2.I received,the same grade as,you did.,我跟你得到同样的分数。,as,引导限制性定语从句 小结,as,引导让步状语从句，意为,“,尽管”。句子必须用倒装结构。,eg._,，,he talks a lot about his favorite singers after class.,(,重庆卷,),A.Quiet a student as he may be,B.Quiet student as he may be,C.Be a quiet student as he may be,D.Quiet as he may be a student,解析：,B.,若表语是单数名词,则该名词不用冠词修饰。,三,.as,引导让步状语从句,as,引导倒装结构,表示让步关系,其结构为：,“,as+,主语,+,谓语,+”,使用此结构时应注意以下几点,:1),倒装的部分一般为表语、状语和,动词原形。,2),表语是单数可数名词,其前面的,a(an),要省去,;3),倒装,的动词原形常与,may,might,will,would,等词连用,但这些词都要保,留在原来位置上。,1.,Child,as he is,he speaks English well.,他虽是个孩子,但英语说得很好。,2.,Much,as I like the book,but I have no money to buy it.,虽然我非常喜欢这本书,但我却没钱买。,3.,Try,as he might,Tom could not find a job.,不管怎样努力,汤姆还是找不到一份工作。,as,引导让步状语从句 小结,as 引导比较状语从句时（asas/not asas/not soas）。,eg,.,John is the tallest boy in the class,_according to himself.,(安徽卷),A.five foot eight as tall as B.as tall as five foot eight,C.as five foot eight as D.as tall five foot eight as,解析：A。用as+形容词+as+基数词+单位。表示“高达-”，再,如：This man is,as tall as eight feet,.,四,.as,引导比较状语从句,“,as+,形容词或副词原级,+as”,意为“和,一样”，表示同级,的比较，但要注意第一个,as,为副词，第二个,as,为连词。根据比较,对象和性质的不同又可以把此种结构分为三种：,一,.,“asas结构”用于表示不同人或物同一性质的比较，意为“和一样”。,eg,.,The tree is as tall as the building(is),这棵树和那栋楼一样高。,二.“asas结构”用于表示同一个人或物不同性质的比较，意为,“既又”。,eg,.,This swimming pool is as wide as it is long.,这个游泳池宽度和长度相等,as,引导比较状语从句 小结,三,.,“,as+,形容词或副词原级,+as”,结构的变体形式是“,as+,形容词,+a+,单数名词,+as,或,as+many/much+,名词,+as”,。,意为“,和,一样,”,。,1.I dont want,as expensive a car as,this.,我不要这么贵的汽车。,I dont want a car,as expensive as,this,2.This is,as good an example as,the other is.,这个例子和另外一个例子一样好。,as,引导比较状语从句 小结,as引导时间状语从句，表示“当时候”或者“随着”。,eg,.,_ the day,went on,the weather got worse.(全国卷),A.With B.Since C.While D.As,答案 D.as 意思为“随着”。With不可以引导从句。,五,.as,引导时间状语从句,as,引导时间状语从句，意为“当,时；同时，随着”。作“当,时”解,引导时间状语从句，表示主句动作与从句动作同时发生。,eg.1.,As,she left the room she remembered that book.,她离开房间时想起了那本书。,2.,As,the sun rose,，,the fog dispersed.,太阳一出来,雾随之消失。,as,引导时间状语从句 小结,as 引导方式状语从句。,eg.Who should be responsible for the accident?,The boss,not the workers.They just carried out the order,_.(,福建卷,),A.as told B.as are told C.as telling D.as they told,解析：,A,。,as,引导方式状语从句，表按照、正如；,as told“,从属连词,+-ed/-ing,形式”可以看作是一种省略，即省略了主语和,be,动词。究竟使用何种非谓语动词形式取决于主被动关系。,六.as 引导方式状语从句,as,引导方式状语从句，意为,“,按照”、“依照”、“像”,。,1.Doctors have said that as many as 40 percent of patients,dont take medicine,as directed,.,医生说多达,40%,的病人没有按照被指导的方式吃药。,2.,As,I explained on the phone,your request will be considered,at the next meeting.,按照我在电话里解释的，你的要求在下次会议上考虑。,as,引导方式状语从句 小结,as引导原因状语从句。,eg.Jenny was very sad over the loss of the photos she had shot,at Canada,_ this was a memory she especially,treasured.(,广东卷,),A.as B.if C.when D.where,解析：,A,。,as,作从属连词引导原因状语从句。,七,.as,引导原因状语从句,as,和,because,since,for,的区别是：,1.because,语势最强，用来说明人所未知的原因，回答,why,提出,的问题，可置于强调句中且其前可加修饰语。,2.since,是双方都知晓原因或经过分析而得之的原因，语气次之。,3.for,是并列连词，前用逗号隔开，表逻辑推理或补充说明。,4.as,语气最弱，原因是显而易见的或已为人们所知，即已知原,因，所引导的分句可置于句首。,eg.We had better hurry,as it is getting dark,.,天变暗了，我们最好快点。,as引导原因状语从句 小结,eg.With the help of the German experts,the factory produced,_ cars in 1993 as the year before.,A.as twice many B.as many as twice,C.as twice as many D.twice as many,解析：,如果表示一方是另一方的若干倍时,“,倍数,+as+,原级形,容词,/,副词,+as”,为一常用结构。,八.as构成的倍数表达法,twice as many,表示倍数的句型：,A+is+,倍数,+as+,形容词原级,+as,；,A+is+,倍数,+the+size(height,length,width),eg.,这个广场是那个的两倍大。,This square is twice as large as that one.,=This square is twice the size of that one.,as构成的倍数表达法 小结,twice as many,eg.Lets learn to use the problem we are facing _ a,stepping-stone to future success.(全国卷),A.to B.for C.as D.by,解析:,C。as作介词表“作为”，常接在 treat/regard/use/recognize 等动词之后；,注意和,like,的区别，,like“像一样”。,1.He is a child,and must,be treated as,such.,他年幼，应该当孩子对待。,2.He acted,like,a child,while he had grown up.,他虽已成人，但做事却像孩子一样。,九,.,as用作介词,十.as和其它一些词构成连词,1.as long as,意思为”只要”。,eg._ I know the money is safe,I shall not worry about it.,(,北京卷,),A.Even though B.Unless C.As long as D While,2.as if(though),意思为“似乎