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一.定语从句篇 1.先行词与关系词被分隔。这种结构主要有三类： （1）先行词+其他定语+定语从句 eg: Changes in the economy that lead to fewer job opportunities for youth make gainful emploument increasingly diff iculty to obtain. （2）先行词+状语+定语从句 eg: There exists no language or dialect in the world that cannot convey complex ideas. （3）先行词+谓语部分+定语从句 eg: It can be predicted that questions will arise which will specific scientific answers. 2.when/where/why引导状语从句和定语从句的区分 秘诀：如果一个定语从句不是缺主语或宾语，而是缺状语，并且先行词是除了时间名词（这种情况下会when）和原因名词（这种情况下用why）以外的任何其他名词，就用where 引导定语从句。 eg: He told us how he dealt with the self-interest of countries to bring them into a kind of international accord where everyone seemed to benefit.(where相当于from which) 二.状语从句篇 1.本质：状语从句就是用连词将几个分句连接起来，以表达分句之间特定的逻辑关系。 2.while和when的区分 While=during that time（在…期间），表示某一时间段内发生的动作。因此从句谓语动词通常是延续性动词。When=at that time（在…时刻），从句谓语动词常是短暂动词；when从句也可用延续性动词。但往往是过去进行时态。While除表时间外，还有另外三种意思：表条件“只要”，表对比“然而”，表让步“尽管”。 2.引导条件状语从句的几个连词：if,unless,suppose,supposing,providing,provided,on condition that,so long as,as long as. eg:You can arrive in Beijing earlier for the meeting provided you don`t mind taking the night train. 3.表示倍数比较的三种句型 （1）倍数+比较级：A is three times bigger than B. （2）倍数+as…as：A is three times as big as B. （3）倍数+名词：A is three times the size of B. 三.As专题 1.as用在名词后作后置定语 eg:Ambition as a healthy impulse（雄心壮志作为一种健康的冲动） 2.as用作副词 在as…as结构中，前一个as是副词，其后常接形容词或副词；后一个as是连词，可以省去。eg:This book is difficult.That one is as difficult. eg:As the internet becomes more and more commercialized,it is in the interest of business to universalize access. 4.as 用于否定结构 （1）as前面的句子是否定，as句子本身是肯定。此时as译作“不像…”。 eg: Pure iron cannot be hardened by heating and cooling,as can steel,because iron lacks the necessary carbon.（纯铁是无法通过反复受热和遇冷来硬化，这点不像刚，因为铁缺少碳元素） （2）as前面的句子是肯定，as句子本身是否定。此时as译作“但，然而”。 eg: He could love the child as he did not love Charles.（他可以爱上这个孩子，然而他却不爱查尔斯） 5.常见的as固定搭配 as well(也),as a whole(作为一个整体),as yet(迄今，到目前为止)。 四.Than专题 1.more than不仅仅是，不只是 eg: Teachers do much more than impartknowledge.They are forces in young lives.(老师不只是受业解惑，他们还是年轻生命的力量的源泉) 2.more than +形容词，表示“非常”。 eg: I would be more than readyto help you.(我将十分愿意帮助你) 3.more than+数字，表示“多于…”反义词是less than. eg: more than 25%(超过25%) 4.no more than=not any more than，表示“仅仅，只是”。反义词no less than，表“不少于”。 eg: He received no more than six months of formal education.=He didn`t receive any more than six months of formal education. 5.nothing more than,表示“只不过是”,相当于nothing but。反义词nothing less than,表示“不亚于，相当的”。 eg: There are always concerns that traditional dances performal in a theater are nothing more than a spectacle.(人们总是担心，传统的舞蹈仅仅是很壮观而已) 一点总结：nothing more than后面通常接名词，与nothing相呼应；no more than后面接数字。 6.than引导定语从句 eg; The project requires more labor than has been put in.(此工程需投入更多的劳动力) 分析：去掉more…than,例句就变为The project requires labor that has been put in. that 取代than作从句的主语。由于than须与比较级形容词more呼应，故than不能用that替换。 五.虚拟语气 1.虚拟条件句中，主句和if从句中的谓语动词形式如下： 表示虚拟的时间 If从句谓语形式 主句谓语形式 现在 过去式 would(should,might,could)+do 过去 过去完成式 would(should,might,could)+have done(been) 将来 were to(should)+do would(should,might,could)+do 2.倒装虚拟句 当if条件句中有助动词should,had或were时，可以省去if,而将should,had或were置于句首，从而构成倒装虚拟句，意义不变。 eg: It can`t tell you able an underprivileged youngster might have been had he grown up under more favorable circumstances. 3.跳层虚拟句 这类句子一般分为两部分，在语气上截然相反，一部分虚拟，另一部分不虚拟。两部分之间往往用but、or、otherwise连接。 （1）虚拟句+but+陈述句 该句型使用规律为： a. 主语+would do,but+主语+一般现在时谓语形式； b. 主语+would have done,but +主语+一般过去时谓语形式。 eg: I would have gone to visit him ,but I was fully occupied the whole of last week. （2）陈述句+or(or else,otherwise)+虚拟句 规律如下： a. 主语+一般现在时谓语形式，or+主语+would do； b. 主语+一般过去时谓语形式，or+主语+would have done eg: We didn`t know his telephone number,otherwise we would have telephoned him. 六.动名词的复合结构 构成样式：my doing/Tom`s doing，这种结构常用在句中作主语或宾语。 物主代词（his,my,your等）或所有格名词（Mary`s,Tom`s等）于动词连用，即构成动名词的复合结构，用来引出动名词的逻辑主语，。当句子主语并不是动名词动作的执行者时，我们就需要给出动名词自己的动作发出者。 eg: 普通动名词 动名词复合结构 Jim insisted on reading the letter.(Jim坚持要看信) Jim insisted on my reading the letter.( Jim坚持要我看信) He disliked working late.(他不喜欢工作到很晚) He disliked his wife`s working late(他不喜欢他老婆工作到很晚) 相关链接：高考复习指导 高考复习高考复习指导
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