条件状语从句 课件- 高三英语一轮复习.ppt

让步状语从句定义：让步状语从句是状语从句的一种，表达一种退一步的条件一般翻译为“尽管”或“即使”让步状语从句可以位于主句前、后，有时插在主句中间定义引导让步状语从句的连词主要有：though和although；while；as（虽然但是）；even if 和 even though（即使纵使 ）；whether （or）（无论是否或不管是还是）;no matter +疑问词（不管都）；疑问词 whether等though , although 表示“虽然，纵然 ”之意这两个连词意思大致相同，在一般情况下可以互换使用Although/though he was old, he worked hard.= He was old but he worked hard.Although/though 注意一个典型的中式英语错误：although/though切不可与but连用！但可用yet，still改错：Although it rained heavily, but they still went out.让步状语从句与并列句的区别1. Though he is in his sixties ,_ he works as hard as a young man. A. yet B. but C. and D. and yet1. Excuse me for breaking in, _ I have some news for you. A. so B. and C. but D. yet1. 题1是主从复合句，所以中间不能使用并列连and/or/but/so等。

Yet是副词，只有yet可以与though连用题2为并列句，而“Excuse,but ”为固定搭配ACAs, though 表示“虽然.但是“”纵使”之意As引导的让步状语从句必须以部分倒装的形式出现，被倒装的部分可以是表语、状语或动词原形，though也用于这样的结构中但although不可以这样用例如：Object as you may, Ill go.(=Though /Although you may object, Ill go.)纵使你反对，我也要去As, thoughAsAs引导的让步状语从句用倒装语序：要把表语、状语或动词原形提前到句首1）表语的倒装（如果表语是名词，要省略冠词）：Rich as he is, I dont envy him.Child as he is, he knows a lot.2) 谓语的倒装（动词原形前置到句首）：Try as he would, he could not remember a word.Search as they may, they can find nothing in the room.3)状语的倒装（不可在状语之前加very等修饰语）Much as I admire him as a writer, I do not like him as a man.Hard as I studied, I could not catch up with him.由连接代词whoever, whomever, whatever, whichever 引导的让步状语从句，引导词作从句中的主语或宾语，如：Whoever（=No matter who）is unwilling to go, I will go.Whomever (= No matter whom) you are dealing with, this method is no good.Whatever(=No matter what）happens，keep calm.We have no objection, whichever = (=no matter which ) you choose. whoever, whoever, whatever , whicheverWhatever（No matter what）difficulties may arise, we must and can overcome them one by one.(whatever 既相当于 no matter 连接主句与从句，又相当于疑问形容词what修饰名词difficulties。

Whichever（=No matter which）method you use, the result is much the same.由连接形容词whatever 或 whichever 引导的让步状语从句，引导词后常有名词出现，如：Whatever 或whicheverhowever, wherever或whenever由连接副词however，wherever 或 whenever 引导的让步状语从句，引导词作从句中的状语，如：However（=No matter how）difficult the task may be, we will fulfill it on time.(however 既相当于 no matter 连接主句与从句，又相当于疑问副词how修饰difficultWherever（=No matter where）they went, they were warmly welcomed.Whenever(=No matter when) Im unhappy， he cheers me up.The dog follows me wherever(= no matter where ) I go. While（=although),它引导的让步状语从句只能前置，位于句首.While 引导的让步状语从句如：While you maybe right, I cant altogether agree .比较以下句子：While I was reading, the light went out.(时间）Motion is a absolute while stagnation is relative.(转折、对比）He is lazy， while his brother is diligent.（转折、对比）Whether.or(是还是)引导的让步状语从句：这种从句也称“选择条件-让步状语从句”，可位于主句之前或之后，如：Whether you like it or not, youll have to do it.She had to go , whether or not she wanted it.2.As 引导让步状语从句时必须倒装；3.Though引导让步状语从句时可以倒装也可以不倒装；1.Although/even if/even though 引导让步状语从句时不倒装；5.Whatever/ whichever 以及 no matter what/which 引导让步状语从句时后常接名词；4.however/ no matter how 引导让步状语从句时后常接形容词或副词；注意练习1._ I accept that his is not perfect, I do actually like the person.A. while B. since C. before D. unlessA2._small, the company has about 1,000 buyers in over 30 countries.A. as B. if C. although D. onceC3. One can always manage to do more things, no matter _full ones schedule in life.A. how B. what C. when D. whereA谢谢观赏！。