1、英语长难句分析英语长难句分析 从结构来说，英语句子中，除了谓语之外，其它的成分均可以由从句或者非谓语动词来充当。从句本身是一个完整的句子，因此，从句与从句之间的关系可能包孕、套嵌，也可能并列，平行。从功能来说，英语有三大复合句，即:名词性从句，形容词性从句和状语从句。由于非谓语动词和从句的这些特点，使英语句子从理论上讲可以无限延长。长难句的基本特征长难句的基本特征 1.从句又多又长：一个主句带多个从句，从句中又含有从句 应对方法：应对方法：先抓主干，找出复杂句中最核心的主谓宾语，再层层扩展 2.句子中带有长长的插入成分：用插入语来交代某句话是谁说的，或者是说话人的身份，或者是解释说明前面的内容
2、 应对方法：应对方法：理解句子主干时，可以先不要理会插入语，先把主句的意思看完整，然后再看插入部分 3.分词状语，独立主格结构的干扰 应对方法应对方法：主句最重要的特征就是有完整的主谓结构，尤其是独立的谓语部分，一个看似句子的结构，如果没有独立的谓语部分，它就不是句子，而是分词短语或独立主格结构，可以跳过暂时不看 4.通常是三种情况的混合 应对方法应对方法：从前向后，抓住独立的谓语部分，从而区分出主句和分词状语，再根据从句的连接词，区分出主句和从句，层层扩展理解，插入语在哪个层次，就放在哪个层次中理解。复合从句复合从句 这些句子往往较长,一个从句套着另一个从句,环环相扣,使得整个句子结构较为复
3、杂。其实,不管句子有多长多复杂,它只由两部分构成：即主干和修饰成分。主干是整个句子的骨架,主要指主谓宾结构(如:I want a ticket.)或主系表结构(如:The man is a teacher.)。而修饰成分在句中只起修饰或补充主干的作用,它既可以是单词,也可以是短语,更常见的则是从句,尤其是定语从句和状语从句。这些从句都很常见,但很多时候分不清单词、短语和从句之间的相互关系,这样会导致整个句子分析混乱。Recycling also stimulates the local economy by creating jobs and trims the pollution contr
4、ol and energy costs of industries that make recycled products by giving them a more refined raw material.回收利用不但可以创造就业机会,来促进当地经济的发展,还可以控制污染,并通过为工业提供更好的原材料来降低制造再生产品的工业部门的能源成本。Recycling also stimulates the local economy by creating jobs and trims the pollution control and energy costs of industries tha
5、t make recycled products by giving them a more refined raw material.在这个句子中,主句有两个并列的谓语动词stimulates和trims,而且,trims有两个并列的宾语pollution control和energy costs,that引导的定语从句修饰industries一词。分隔结构分隔结构 为了调整语气和增加补充信息,更主要的是为了平衡句子结构,避免头重脚轻,使语义严密,结构紧凑,而将语法关系密切的两个句子成分用其他语法成分分隔开来,这就是所谓的分隔结构(discontinuous structure)。例如出现较
6、多的是插入语、用破折号插入的新话题或补充信息。此外,还有一些句子成分(一般是定语)过长而出现后置,也可以看作是插入现象,只不过它只是句子原有成分位置的调整,没有新增信息。常见的分割结构形式常见的分割结构形式 常见的分割结构形式有同位语或同位语从句与先行词的分割，定语或定语从句与先行词的分割，主语与谓语的分割，谓语与宾语的分割，某些词语与其所要求的介词或不定式to分割等。分割的两个原则分割的两个原则 英语的分隔应遵循尾重原则（应当把长而复杂的成分放在句末，从而使结构平衡匀称，以避免主语部分太长，谓语部分太短）和句尾信息焦点原则（把新信息,即语义重点放在句子末尾）。阅读时要注意把原来属于一个整体的
7、各部分找出来。The reality that has blocked my path to become the typical successful student is that engineering and the liberal arts simply dont mix as easily as I assured in high school.在我成长为一个出类拔萃的学生的道路上,阻碍我的实际问题就是,工科和文科不能像我在中学时想象的那样简单地结合在一起。The reality that has blocked my path to become the typical succ
8、essful student is that engineering and the liberal arts simply dont mix as easily as I assured in high school.注意主语the reality 与谓语部分is that.之间的分隔。第一个that引导的定语从句修饰reality,第二个that引导表语从句。改变语序改变语序 改变语序主要指倒装句式。这种打破相对固定的常规语序的做法,或是为了强调句子的表达意义重心,或是强调一种表达语气,如虚拟语气、否定语气等。这些句子往往和一些副词、连词相关,有明显的标志。例如:Should you br
9、eak the rule against staring at a stranger on an elevator,you will make the other person exceedingly uncomfortable,and you are likely to feel a bit strange yourself.表示与将来事实相反的虚拟语气,从句的谓语用should+动词原形或were to+动词原形,从句中的if 可以省略,需将were或should前移至句首。疑难长句的理解疑难长句的理解 理解疑难长句，关键的问题是首先把握住句子的主干框架。只有这样，才能把握住各句子成分之间
10、的结构和逻辑关系，才可能抓住句子的核心意思。这时，即使有个别单词不认识，也不会严重影响对整个句子的基本理解。其次，要达到对疑难长句的正确理解，必须学会利用上下文提供的线索把握词语的确切含义，具体地说，就是要学习利用某个句子的上一句和下一句提供的词语上的线索，达到对这个句子更确切的理解。英语长句的分析方法：去枝叶，留主干。1）划出句子中的定语从句和状语从句;2）划出所有介词短语（位于be动词后的除外）3）名词性从句看作一个整体,找出句中所有的谓语结构、非谓语结构、介词短语和从句的引导词4）非谓语动词结构看作一个整体5）找出全句的主语、谓语和宾语，即句子的主干6）分析从句的结构和非谓语动词的内部结
11、构。1.This will be particularly true since energy pinch will make it difficult to continue agriculture in the high-energy American fashion that makes it possible to combine few farmers with high yields.译文：这种困境将是确定无疑的，因为能源的匮译文：这种困境将是确定无疑的，因为能源的匮乏，高能量消耗这种美国耕种方式将很难在农业中继续乏，高能量消耗这种美国耕种方式将很难在农业中继续下去，而这种耕种方式
12、使投入少数农民就可获得高产成下去，而这种耕种方式使投入少数农民就可获得高产成为可能。为可能。This will be particularly true since energy pinch will make it difficult to continue agriculture in the high-energy American fashion that makes it possible to combine few farmers with high yields.结构分析结构分析:句子的主干是句子的主干是This will be particularly true。since引
13、导原因状语从句。此从句中又套嵌一个由关引导原因状语从句。此从句中又套嵌一个由关系代词系代词that引导的定语从句，修饰引导的定语从句，修饰the high-energy American fashion。在定语从句中，。在定语从句中，that做主语，做主语，makes做谓语，做谓语，it做形做形式宾语，不定式短语式宾语，不定式短语to combine few farmers with high yields则是真正的宾语（不定式短语内部则是真正的宾语（不定式短语内部to combine是主干，是主干，few farmers是宾语，是宾语，with high yields是状语），是状语），po
14、ssible做做宾语补足语。宾语补足语。this指代前句中提到的这种困境。指代前句中提到的这种困境。energy pinch译为译为“能源的匮乏能源的匮乏”;infashion译为译为“用用方法、方式方法、方式”。2.Now since the assessment of intelligence is a comparative matter，we must be sure that the scale with which we are comparing our subjects provides a“valid”or“fair”comparison.译文：既然对智力的评估相比较而言的，
15、那么我译文：既然对智力的评估相比较而言的，那么我们必须确保，在对我们的对象进行比较时，我们所用的们必须确保，在对我们的对象进行比较时，我们所用的尺度能够提供尺度能够提供“有效的有效的”或或“公平的公平的”比较。比较。Now since the assessment of intelligence is a comparative matter，we must be sure that the scale with which we are comparing our subjects provides a“valid”or“fair”comparison.结构分析结构分析:句子的主干是句子的主
16、干是we must be sure。since引引导原因状语从句导原因状语从句the assessment of intelligence is a comparative matter。主句中又有。主句中又有that引导的宾语从句引导的宾语从句that the scale with which we are comparing our subjects provides a“valid”or“fair”comparison。此宾语从句中又套嵌一个由介。此宾语从句中又套嵌一个由介词词with+which引导的定语从句引导的定语从句with which we are comparing our
17、subjects修饰先行词修饰先行词the scale。scale在此处意为在此处意为“尺度、尺度、衡量标准衡量标准”。3.In general，the tests work most effectively when the qualities to be measured can be most precisely defined and least effectively when what is to be measured or predicted can be not well defined.译文：一般来说，当所需要测定的特征能被精确译文：一般来说，当所需要测定的特征能被精确界定
18、时，测试最为有效界定时，测试最为有效;而当所测定或预测的东西不能而当所测定或预测的东西不能被明确界定时，测试效果最差。被明确界定时，测试效果最差。应对方法：先抓主干，找出复杂句中最核心的主谓宾语，再层层扩展英语长句的分析方法：去枝叶，留主干。回收利用不但可以创造就业机会,来促进当地经济的发展,还可以控制污染,并通过为工业提供更好的原材料来降低制造再生产品的工业部门的能源成本。在定语从句中，that做主语，makes做谓语，it做形式宾语，不定式短语to combine few farmers with high yields则是真正的宾语（不定式短语内部to combine是主干，few fa
19、rmers是宾语，with high yields是状语），possible做宾语补足语。介词短语at the outset译为“从一开始”。但It wasthat在本句中不是强调句型。结构分析:句子的框架是we have come to believe that。simply译为“只不过，仅仅”，不应译为“简单地”。typical successful student is that engineering and theand连接两个并列分句，每个并列分句中皆有一个when引导的时间状语从句分别说明work most effectively和and（work）least effective
20、ly。从功能来说，英语有三大复合句，即:名词性从句，形容词性从句和状语从句。主句主语的they，在此代指上文提到的tests;able在句中作might have been的表语。As a result of two or three centuries of scientific investigation we have come to believe that nature is understandable in the sense that when we ask her questions by way of appropriate observations and experim
21、ents，she will answer truly and reward us with discoveries that endure.with意为“以报答，酬劳”;endure此处应译为“持久，持续”,不要译为“忍受，容忍”。结构分析:句子的框架是we have come to believe that。for引导的是表示原因的分句，分句中还有that引导的定语从句，修饰the patterns and structure。In general，the tests work most effectively when the qualities to be measured can be
22、 most precisely defined and least effectively when what is to be measured or predicted can be not well defined.结构分析结构分析:句子的框架是句子的框架是the tests work most effectively whenand least effectively when。and连接两个并列分句，每个并列分句中皆有一个连接两个并列分句，每个并列分句中皆有一个when引导的时间状语从句分别说明引导的时间状语从句分别说明work most effectively和和and（work）
23、least effectively。第二。第二个时间状语从句中还有一个主语从句个时间状语从句中还有一个主语从句whatpredicted。the tests是主句的主语，是主句的主语，work为为动词做谓语。动词做谓语。qualities在此处是可数名词，不译为在此处是可数名词，不译为“质量质量”，而译为，而译为“特征特征”。defined不能直译为不能直译为“被定义为被定义为”，而应译为主动语态，而应译为主动语态“界定界定”。4.For example，they do not compensate for gross social inequality，and thus do not tel
24、l how able an underprivileged youngster might have been had he grown up under more favorable circumstances.译文：例如，测试并不能弥补明显的社会不公译文：例如，测试并不能弥补明显的社会不公;因因此，它们不能说明一个物质条件差的年轻人，如果在此，它们不能说明一个物质条件差的年轻人，如果在较好的环境中成长的话，会有多大才干。较好的环境中成长的话，会有多大才干。For example，they do not compensate for gross social inequality，and t
25、hus do not tell how able an underprivileged youngster might have been had he grown up under more favorable circumstances.结构分析结构分析:句子的框架是句子的框架是they do not compensate，and thus do not tell how。and连接两个并列分句，第二个并列分句中由连接两个并列分句，第二个并列分句中由how引导的引导的宾语从句是一个带有虚拟条件句的主从复合句，其中宾语从句是一个带有虚拟条件句的主从复合句，其中had he grown up（
26、=If he had grown up）是）是省略了连词省略了连词if的非真实条件句。主句主语的的非真实条件句。主句主语的they，在，在此代指上文提到的此代指上文提到的tests;able在句中作在句中作might have been的表语。的表语。underprivileged在此不能译为在此不能译为“没有没有特权的特权的”，而译为，而译为“没有地位的没有地位的”或或“物质条件差物质条件差的的”。5.It leads the discussion to extremes at the outset：it invites you to think that animals should be
27、 treated either with the consideration humans extend to other humans，or with no consideration at all.译文：这种说法从一开始就将讨论引向极端，译文：这种说法从一开始就将讨论引向极端，它使人们认为应该这样对待动物它使人们认为应该这样对待动物:要么像对人类自身一要么像对人类自身一样关怀体谅，要么完全冷漠无情。样关怀体谅，要么完全冷漠无情。It leads the discussion to extremes at the outset：it invites you to think that ani
28、mals should be treated either with the consideration humans extend to other humans，or with no consideration at all.结构分析结构分析:句子的框架是句子的框架是It leads the discussion to extremes at the outset:it invites you to think that。冒。冒号后的复合句是对冒号前部分作进一步说明。复合句中号后的复合句是对冒号前部分作进一步说明。复合句中that引引导宾语从句，从句中有导宾语从句，从句中有eitheror
29、引导的两个并列的介词结引导的两个并列的介词结构作状语，修饰动词构作状语，修饰动词be treated，其中第一个，其中第一个with介词结构中介词结构中还有一个省略了关系代词还有一个省略了关系代词that或或which的定语从句的定语从句humans extend to other humans，修饰，修饰the consideration。it代指上文的观点，即如果对人权没有达成一致看法，代指上文的观点，即如果对人权没有达成一致看法，而谈论动物的权利是徒劳的。介词短语而谈论动物的权利是徒劳的。介词短语at the outset译为译为“从从一开始一开始”。动词。动词invites应转译为应转
30、译为“使使”、“让让”或或“促使促使”。动宾结构动宾结构extend consideration to意为意为“给予关怀或关心给予关怀或关心”，consideration不应译为不应译为“考虑考虑”。6.But even more important，it was the farthest that scientists had been able to look into the past，for what they were seeing were the patterns and structures that existed 15 billion years ago.译文：但更重要的是
31、，这是科学家们所能观测到译文：但更重要的是，这是科学家们所能观测到的有关过去的最为遥远的景象，因为他们看到的是的有关过去的最为遥远的景象，因为他们看到的是150亿年前宇宙云的形状和结构。亿年前宇宙云的形状和结构。6.But even more important，it was the farthest that scientists had been able to look into the past，for what they were seeing were the patterns and structures that existed 15 billion years ago.结构分
32、析结构分析:句子的框架是句子的框架是it was the farthest that。但。但It wasthat在本句中不是强调句型。在本句中不是强调句型。it是指上句中所提到的是指上句中所提到的150亿年前形成的巨大云团（亿年前形成的巨大云团（a strip of enormous cosmic clouds some 15 billion light-years from earth）;that引导的应是一个定语引导的应是一个定语从句，修饰先行词从句，修饰先行词the farthest。for引导的是表示原引导的是表示原因的分句，分句中还有因的分句，分句中还有that引导的定语从句，修饰引
33、导的定语从句，修饰the patterns and structure。7.Thus it happened that when the new factories that were springing up required labor，tens of thousands of homeless and hungry agricultural workers，with their wives and children，were forced into the cities in search of work，and any work，under any condition，that wou
34、ld keep them alive.译文:于是就出现了这样的情况:正当新办的工厂纷纷建立，需要劳动力的时候，成千上万无家可归、饥肠辘辘、以农业为生的劳动者携家带口，被迫进入城市;他们要找活干，不管什么活儿，不论什么条件，只要不被饿死就行。Thus it happened that when the new factories that were springing up required labor，tens of thousands of homeless and hungry agricultural workers，with their wives and children，were
35、forced into the cities in search of work，and any work，under any condition，that would keep them alive.结构分析:句子的框架是it happened that。it做形式主语，that引导的从句做真正的主语。主语从句中，又有一个由when引导的时间状语从句，主句为tens of thousands of homeless and hungry agricultural workerswere forced，时间状语从句中从句主语the new factories又带有一个定语从句that were
36、 springing up;that would keep them alive做work的定语从句。spring up意为“发生，出现，建立”。8.As a result of two or three centuries of scientific investigation we have come to believe that nature is understandable in the sense that when we ask her questions by way of appropriate observations and experiments，she will a
37、nswer truly and reward us with discoveries that endure.译文:由于两三个世纪以来的科学研究成果，我们逐渐相信，如果运用合适的观察和实验方法向大自然探究问题，她会真心实意地给我们答复，并且以永垂不朽的发现来报答我们。从这个意义上来说，大自然是可以认识的。As a result of two or three centuries of scientific investigation we have come to believe that nature is understandable in the sense that when we a
38、sk her questions by way of appropriate observations and experiments，she will answer truly and reward us with discoveries that endure.结构分析:句子的框架是we have come to believe that。that引导的从句做believe的宾语从句;此从句中有一个that从句作the sense的同位语从句;同位语从句中又套嵌一个由when引导的时间状语从句;此时间状语从句又套嵌一个定语从句that endure，修饰其先行词discoveries。by
39、 way of意为“经由，通过方法”;reward sb.with意为“以报答，酬劳”;endure此处应译为“持久，持续”,不要译为“忍受，容忍”。9.These new observational capabilities would result in simply a mass of details were it not for the fact that theoretical understanding has reached the stage at which it is becoming possible to indicate the kind of measuremen
40、ts required for reliable weather forecasting.译文：理论上的认识已达到了这样一个阶段,即现在已能指出需要哪种测量方式才能可靠地预报天气。如果做不到这一点，那么上述这些新的观察能力只不过提供了一大堆细节而已。These new observational capabilities would result in simply a mass of details were it not for the fact that theoretical understanding has reached the stage at which it is beco
41、ming possible to indicate the kind of measurements required for reliable weather forecasting.结构分析:句子的框架是These new observational capabilities would result in simply a mass of details。后面紧跟省略了if引导的虚拟条件句were it not for the fact that，即if it were not for the fact that;that从句作the fact的同位语从句。此从句中又套嵌一个定语从句，修
42、饰其先行词the stage;required for reliable weather forecasting为过去分词短语修饰the kind of measurements。simply译为“只不过，仅仅”，不应译为“简单地”。10.The story of the discovery of what is now generally called the principle of Archimedes，namely that a solid body when immersed in a liquid loses a portion of its weight of the liquid it displaces，has many different versions，of which the following is one.译文:当固体浸没到液体中时，固体会失去它所排出的液体的那部分重量，这就是现在通常所谓的阿基米德原理。有关这一发现的故事说法众多，下面的故事就是其中之一。
