一．设置短文改错的错误的主要类型
短文改错设置的错误的主要类型有：⑴名词的单复数；⑵动词的词态和语态；⑶非谓语动词；⑷介词的搭配；⑸主谓一致性；⑹不定 冠词与定冠词；⑺固定词组的搭配；⑻行文逻辑一致性；⑼词性的混淆； ⑽同义词辨异；⑾连词的误用；⑿代词的格与数；⒀句子成份残缺等。归纳为语法错误、词汇错误和上下文关系错误。这些错误大致涉及以下几个方面：
（一）一致性问题
所涉及的一致性问题主要包括主谓一致、时态、语态一致、代词指代一致、名词的数与格的一致、句式结构与语意一致、行文关系的一致。例如：主谓不一致
eg: There were a football game on TV last Saturday evening.
讲解：原句中 a football game决定了谓语动词必须用单数，所以应该把 were 改为was.
（二）词性问题
词性问题不单单是识别的问题，能够说出所给单词的词性，并不说明能够在句中找出用错词性的地方。其主要目的是检测考生是否真正了解主要词类的语法作用及其在句中的经常性位置，如名词在句中一般作主语、宾语、表语，动词作谓语，形容词充当表语、定语和宾补，而副词则充当状语，修饰形容词、动词乃至句子。
名词主要考察能力：单复数混用和出题形式：
单复数混用
eg: Helen is seventeen year old. She is very busy.
讲解：“年龄多大了”应该为复数形式，应此应该把year改为years。注意：代词单复数混用类似。
eg: As for a friendship, we can readily find them in our classmates and other people around us.
讲解：显然因该把 them 改为it，指代前面提及的friendship。此句话意思是“就友谊来说，我们可以很容易地从我们的同学和周围的人中找到。”
形容词/副词主要考察能力：两者之间是否混用。
出题形式：形容词与副词混用。即该用形容词的地方原文用了副词，该用副词的地方原文用了形容词。
①副词代替正确形容词出现在文章当中
eg: During the football season, Helen is much busier than usually.
讲解：很明显“与平时相比较更忙”，因此需要把usually改为usual。
②形容词代替正确副词出现在文章当中
eg: As the time clock showed one minute and forty-two seconds left in the game, she began cheering excited, “Come on-getgoing!”
讲解：原文意思是说比赛还剩一分四十二秒时，她开始兴奋地叫道-----，显然应把excited改为excitedly，用来修饰动词cheer。
介词主要考察能力：（特别是与动词的）固定搭配。
出题形式：
①介词省略
eg: I’m sure you will get rid the sorrow and unhappiness caused by the disaster.
讲解：get rid of 是固定搭配，意思为“摆脱，除去”
②介词多余
eg: My wife is also happy because of I have given up smoking.
讲解：这里显然示对because of与because用法的辨别区分。前者不能接句子，而后者充当连词可以接句子。所以应该把of去掉。
③介词用错(一般为固定搭配)
eg: I pick out her false hairand said, “Don’t be sad, Miss.”
讲解：pick out应该为pickup。pick out挑选的意思；pick up捡起的意思。
连词主要考察能力：前后两句话之间的衔接关系。
常考三种关系：but转折,and并列,because原因
①eg:One day, my wife and I went shopping at a store. We drove the car but we had alot of things to buy.
讲解：显然原文中所要表达的意思是“我们开车去的原因是因为我们要买好多东西”，所以应该把 but 改为 because/as/for。
②eg:Chatting on line, students can more freely express their feelings and opinions,but improve their English if they are talking with native speakers.
讲解：原文表达的意思是“通过网上聊天，学生能够更加轻松自由地表达自己的想法和观点，并且如果他们同外国人交谈，能够提高他们的英语水平。”所以前后句之间是并列关系，应该把but改为and.
（三）词语固定搭配
主要考查介词与动词、名词、形容词的固定搭配；副词与动词的固定搭配；及物动词后多介词或副词以及不及物动词后少介词，英语中的一些固定句型与习惯搭配等。
固定搭配
I have given up smoke. The dogdoesn’t like the smell.
讲解：give up doing sth。因此动词smoke应该改为smoking。
（四）句子首尾的位置
句子首尾是学生最不注意却容易丢分的地方。命题者故意在句首或句尾设置错误，如果把错误改在上句，那么就会影响下句，容易顾此失彼，尤其是在词语的固定搭配上，此类型的题近两年出现频率有所增加，也是容易失分的句子。
1、要能快速而准确地断句。当学生们碰到一个难长句的时候，很多学生一下子就懵了，不知道从哪着手。其实第一步就是要找出句子的主干，明白句子的中心意思。这样才能把主句和从句分开。比如：
Anyone who cares about what schools and colleges teach and how their students learn will be interested in the memoir (回忆录) of Ralph W. Tyler, who is one of the most famous men in American education.
我们来分析句子的结构：这是一个复合句。首先找出句子的主干：Anyone will be interested in the memoir。Anyone是主语，谓语是will beinterested in，memoir是宾语。Anyone后面是一个由who引导的定语从句，用来限定Anyone所指的范围。在这个从句中，又包含两个由and连接并分别由what和how 引导的宾语从句，表示cares about的内容。
2、判断从句所属类型。我们已经把主句和从句分开了，现在要做的就是判断一下从句到底是什么从句。英语中存在三类从句：定语从句、状语从句和名词性从句。判断的方法在于：看从句在整个句子中充当什么成分。充当定语就是定语从句，充当状语就是状语从句，充当主语就是主语从句。在这一步骤中又存在一些方法。一般来说，只要使用在名词或代词后面的从句都是定语从句；放在介词和动词后面的都是宾语从句；句中有it做形式主语或形式宾语的话，那么后面的从句就是主语或宾语从句；放在系动词和一些相当于系动词的词（remain, get, turn）后面的都是表语从句；放在一些抽象名词后面的且在从句中不充当成分的都是同位语从句。比如：
It is by no means clear _____the president can do to end thestrike..
句子的主干就是it is by no means，显然在这个句中it充当的是形式主语，后面的_____the president cando就是一个主语从句，这是从句中缺少主语，我们就填的是what.
A lot of language learning, _____ has been discovered, is happening in the first year of life, so parents should talk much to their children during the period..
句子的主干就是language learning is happening in the first year of life. _____ has been discovered用来修饰整个主句的内容，又放在主句的中间，所以这是一个非限制性定语从句修饰整个主句的内容。我们都知道在定语从句中内代替整个句子内容的有两个引导词：which和as，只有as在引导非限制性定语从句时能放在句中，所以这个地方填的就是as。
________he is, he will be thinking of you.
显然这句话的主干就是：he will be thinking ofyou. _____ he is在整个句子当中充当的就是状语，所以这部分就是状语从句。在这个状语从句中缺乏的就是表语，想到众多的引导词以后，我们最终选择了wherever。因为wherever的意思是“无论在哪”，刚好符合题意，所以是最合适的一个。
Is this desk____ he bought for me yesterday?
Is this the desk _____ he bought for me yesterday?
碰到一般疑问句了，怎么办呢？我们第一步就是要把它变成陈述句。所以第一句话的主干就是this desk is…,第二句话的主干就是thisis the desk。很显然，第一句话后面的从句he bought for me就是一个表语从句，而第二句话后面的从句he bought for me就是一个定语从句。在第一句话中，表语从句中缺乏宾语，所以填的就是what。在第二句话中，定语从句中缺的也是宾语，我们填的是which/that或不填。所以做题时一定要细致，向这两个题的区别就在于一个定冠词the.
3、判断从句中缺什么成分，然后根据各种从句的规则选择引导词。值得注意的有：
（1）在定语从句中，除了as之外的引导词，其他词都没有实在意义。还有就是定语从句中的引导词不包括what, how和-ever型的词，在状语从句中的引导词不包括that。在名词性从句和状语从句中，除了要判断出从句中所缺成分之外，还要把引导词的意思带进句中，这样才能最终选择出答案。
（2）关于that在各从句中的作用。我们都知道that在定语从句中指人或物，在从句中充当主语、宾语或表语。而that在名词性从句中则不充当任何成分，也没有实在意义。
（3）关于no matter+疑问词和-ever型的疑问词的适用范围。no matter+疑问词只能引导状语从句，而和-ever型的疑问词既可引导名词性从句，又可引导状语从句。
（4）在定语从句中，如果引导词后面紧跟了一个名词，那么引导词一定填的是whose，此时的whose可以和of which/whom +名词或者是the+名词+of which/whom互换。
(5)在定语从句中缺的成分只有主宾表或状语。如果在判断完句子都不缺主要成分的情况下，那肯定就是缺状语。要注意一些特殊的先行词在句中充当状语时，用的是引导词where。比如：position,occasion, condition, stage等。请分析下面的句子：
①Sorry I’m late, but you cannot imagine______ trouble I took to find your house.
②—Why didn’t you chat with that friendly foreigner just now?
-- I’d like to have, but the trouble was _____ he said was difficult for me to understand.
③She’ll never forget her stay there _____ she found her son who had gone missing two years before.
④ “I’d like to give my thanks to those _____ help my son will be able to survive his terrible disease.” Said the mother on TV.
⑤Some people are worried about theyear 2012 _____ they think the earth will end in disaster,
Keys： what; thatwhat; when; with whose; when.
下面请大家分析一下的难长句，找出句子的主干以及分析句中的其他成分。
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.
结构分析：句子的主干是This will be particularlytrue…。since引导原因状语从句。此从句中又套嵌一个由关系代词that引导的定语从句，修饰the high-energy Americanfashion。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 farmers是宾语，with high yields是状语），possible做宾语补足语。this指代前句中提到的这种困境。energy pinch译为“能源的匮乏”;in…fashion译为“用…方法、方式”。
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。
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.
结构分析：句子的主干是we must be sure…。since引导原因状语从句the assessment ofintelligence is a comparative matter。主句中又有that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词with+which引导的定语从句with which we are comparingour subjects修饰先行词the scale。scale在此处意为“尺度、衡量标准”。
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，我们所用的尺度能够提供“有效的”或“公平的”比较。
3. In general，the tests work most effectively when the qualities to be measuredcan be most precisely defined and least effectively when what is to be measuredor predicted can be not well defined.
结构分析：句子的框架是the tests work mosteffectively when…and leasteffectively when…。and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）leasteffectively。第二个时间状语从句中还有一个主语从句what…predicted。the tests是主句的主语，work为动词做谓语。qualities在此处是可数名词，不译为“质量”，而译为“特征”。defined不能直译为“被定义为”，而应译为主动语态“界定”。
译文：一般来说，当所需要测定的特征能被精确界定时，测试最为有效;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。
4. For example，they do not compensate for gross social inequality，and thus do not tell how able anunderprivileged youngster might have been had he grown up under more favorablecircumstances.
结构分析：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how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had he grown up…（=If he had grown up…）是省略了连词if的非真实条件句。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。underprivileged在此不能译为“没有特权的”，而译为“没有地位的”或“物质条件差的”。
译文：例如，测试并不能弥补明显的社会不公;因此，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。
5.It leads the discussion to extremes at the outset：it invites you to think thatanimals should be treated either with the consideration humans extend to otherhumans，or with noconsideration at all.
结构分析：句子的框架是It leads the discussionto extremes at the outset： it invites you to think that…。冒号后的复合句是对冒号前部分作进一步说明。复合句中that引导宾语从句，从句中有either…or…引导的两个并列的介词结构作状语，修饰动词be treated，其中第一个with介词结构中还有一个省略了关系代词that或which的定语从句humans extend to other humans，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，而谈论动物的权利是徒劳的。介词短语at the outset译为“从一开始”。动词invites应转译为“使”、“让”或“促使”。动宾结构extend consideration to意为“给予关怀或关心”，consideration不应译为“考虑”。
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：要么像对人类自身一样关怀体谅，要么完全冷漠无情。
6. But even more important，it was the farthest that scientists had been able to look into thepast，for what theywere seeing were the patterns and structures that existed 15 billion years ago.
结构分析：句子的框架是it was the farthest that…。但It was…that…在本句中不是强调句型。it是指上句中所提到的150亿年前形成的巨大云团（a strip of enormouscosmic clouds some 15 billion light-years from earth）;that引导的应是一个定语从句，修饰先行词the farthest。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thepatterns and structure。
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150亿年前宇宙云的形状和结构。
7. Thus it happened that when the new factories that were springingup required labor，tens of thousandsof 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 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tensof thousands of homeless and hungry agricultural workers…were 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 springing up;that would keep them alive做work的定语从句。springup意为“发生，出现，建立”。
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。
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 answer truly and reward uswith 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 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”。
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。
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 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 factthat…，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”。
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。
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.
结构分析：句子的框架是The story…has many different versions…。what is now generally called the principle of Archimedes为名词性从句做介词of的宾语。namely that a solid body…作the principle of Archimedes的同位语;when immersed in a liquid是省略了主语的过去分词短语，句子补充完整为when the solid body is immersed in a liquid，修饰其主句a solid body loses a portionof its weight of the liquid…;it displaces是省略了关系代词that的定语从句修饰theliquid，it代指前面提到的the solid body;同时，of which the following is one又构成先行词versions的定语从句。displace意为“排（水）”;version不译为“版本”，此处指“根据个人观点的（对事件等的）说法，看法”;句尾的one代指a version。
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。
