历年英语六级真题长难句摘选精析
（全）大学英语六级真题卷-阅读理解长难句拆解,翻译
（全）大学英语六级真题卷-阅读理解长难句拆解,翻译大学英语六级真题卷-阅读理解长难句拆解，翻译Schools are not just a microcosm (缩影）of society: they mediate it too. 译文：学校不仅仅是社会的浓缩，它能反映最真实的现实。
词法：mediate，动词有表达，传递的意思。
此处的意思，要结合文章的主旨来理解。
逻辑推理：本句是引出文章主要内容的作用。
真实目的是通过学习表现社会贫富差距。
概括力极强的句子，在英语中要寻找真实的具体意义，见下句。
The best seek to alleviate the external pressures on their pupils while equipping them better to understand and handle the world outside-- at once sheltering them and broadening their horizons.译文：一流大学既想减少(外部)社会带给学生的压力，又想让学生深刻得了解社会，深入得接触社会——两全其美：不让学生经历风雨又想丰富他们的见识。
大学英语六级真题翻译理解要点：破折号的出现，说明本句话前后意思一致。
while 即表示同时，又表示转折。
即不想社会干扰学生，又想学生多接触社会，这是一处矛盾。
所以，at once 此处表述一个时间做两件事。
这里学校既想···又想···，正是下文提及的两处ideals。
This is ambitious in any circumstances and in a divided and unequal society the two ideals can clash outright(直接地）.译文：这种完美的理想太难实现，而且在不和谐，贫富差距大的社会，会导致尖锐的矛盾。
英语六级阅读的真题长难句解析
英语六级阅读的真题长难句解析
1. While pensioners, particularly elderly women, make up a large proportion of those living alone, the newest crop of singles are high earners in their 30s and 40s who increasingly view living alone as a lifestyle choice.
【译文】尽管大局部单独生活的.人是靠养老金生活的老年人，尤其是老年女性，但是最新消失的这群单身主义者却正值三十岁到四十岁的壮年。
这些人收入丰厚，渐渐把单身看作是一种生活方式的选择。
【析句】复合句。
主句the newest crop of singles are high earners..., who increasingly view living alone as...是定语从句修饰主句，而主句前while引导让步状语从句，具有转折语气。
2. Supporters of the biotech industry have accused an American scientist of misconduct after she testified to the New Zealand government that a genetically modified bacterium could cause serious damage if released.
【译文】一位美国女科学家向新西兰州政府证明，一种基因改造细菌假如泄露到试验室外，可能会导致严峻破坏，随后生物科技产业的支持者对她的这种行为表示了剧烈责备。
英语六级经典长难句分析
英语六级经典长难句分析（15句）1. This is a difficult and unpleasant business and few animals would survive if they had to start from the beginning and learn about the world wholly by trial and error, for there are the have possible decisions which would prove fatal. (1992. 阅读. 6. Text 2)【译文】这是个困难而又糟糕的事，因为如果动物出生后不得不从头学习生存本领，并且仅仅依靠尝试错误体验世界，那么只有极少数动物能够存活，因为它们做出的决定有可能是致命的。
【析句】复合句。
主句由and连接两个并列句子组成，This is a difficult and unpleasant business and few animals would survive, and前的句子是简单句，and后的句子后又跟有if引导的条件状语从句和for 引导的原因状语从句for there are decisions, decisions又有which引导的定语从句修饰。
2. Vigorous criticism is constructive in science more than in some other areas of human endeavor because in it there are adequate standards ofvalidity which can be agreed upon by competent scientists the world over.(1992. 阅读. 6. Text 3)【译文】激烈的批评在科学界比在其他人类智慧领域更能起到建设性的作用，这是因为在科学世界里有足够多的有效标准，这些标准被全世界的优秀科学家们共同认可。
大学英语六级阅读真题长难句解析
大学英语六级阅读真题长难句解析下面是英语六级阅读真题长难句解析，供考生参考学习。
1. At some point, while researchers work on figuring out where the truth lies, it just makes sense to say the potential benefit outweighs the cost.【译文】在某种程度上，尽管研究者们仍在努力研究意图发现维他命所起效果的真相，但是维他命对人体可能有的益处物超所值这种说法是有道理的。
【析句】复合句。
主句it makes sense to say, 后面是省略了that的宾语从句the potential benefit outweighs the cost.主句前，while引导让步状语从句，figuring out后where the truth lies作宾语从句。
2. Its been proved to limit the number of defects in embryos, and a recent trial found that folate in bination with vitamin B 12 and a form of B6 also decreases the re-blockage of arteries after surgical repair.【译文】维他命已被证明能够减少胚胎的缺陷，并且最新试验证明叶酸和维生素B12以及B16的一种一起服用也能降低手术修复后动脉血管堵塞的可能性。
【析句】主句由and连接两个并列句，首先是Its been proved to limit the number of defects in embryos, it作形式主语，真正的主语是后面的不定式构造，然后是a recent trial found+宾语从句that folate in bination with...decreases the re-blockage of..., 注意in bination with用在句子中，谓语动词的单复数看前面的名词。
[全]英语四六级-真题长难句分析详解
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英语四六级真题长难句分析详解Round 1----真题长句More than drones dropping a new supply of underwear on your doorstep, Apple’s massively successful brick-and-mortar-and-glass retail stores and Amazon’s small steps in the same direction are what should keep old-fashioned retailers awake at night. (2019.06第一套阅读Section B)【释义】除了无人机在你家门口投放新的内衣外，苹果成功的砖石与零售店以及亚马逊向同一方向迈出的小步，更应该让老式零售商彻夜难眠。
Round 2----生词速递1. drone [droʊn] n. 嗡嗡声;持续低音(如风笛等发出的持续音);持续音音管(或弦等);雄蜂，（不劳动，依赖他人为生的）寄生虫；无人驾驶飞机2. doorstep [ˈdɔːrstep] n. 门阶;(常用以做三明治的)厚面包片3. underwear [ˈʌndərwer]n.内衣；衬衣Round 1----真题长句Over 80% of the world’s urban population is breathing air that fails to meet World Health Organization guidelines, and an estimated 4.5 million people died prematurely from outdoor pollution. (2019. 阅读. 1. Text 1)【释义】全球80%以上城市人口呼吸的空气不符合世界卫生组织标准，2015年约有450万人因室外空气污染而过早死亡。
沪江英语六级真题阅读长难句分析
DAY 11. Eventually, the result of automation may well be an increase in employment, since it is expected that vast industries will grow up around manufacturing, maintaining, and repairing automation equipment. (1990. 阅读. Text 1)【译文】由于据预计在自动化设备生产、维护及维修领域的大型企业将不断发展，或许自动化最终会实现就业率上升。
【析句】复合句。
主句是the result of automation may well be an increase in employment, 其后是since引导的原因状语从句。
重点看从句，it is expected中，it作形式主语，真正的主语是后面的that从句。
2.Also, union spokesmen emphasize that the benefit of the increased production and lower costs made possible by automation should be shared by workers in the form of higher wages, more leisure, and improved living standards.(1990. 阅读. Text 1)【译文】工会发言人也强调说，由于自动化实现的生产扩大、成本降低所带来的利益，应该通过提高工资，增加休假时间，提高生活水平等形式与工人们分享。
【析句】英语中抽象名词的使用十分广泛。
主句union spokesmen emphasize,emphasize后是that 宾语从句。
宾语从句的句子主干是the benefit of the increased production and lower costs should be shared by workers...,主语the benefit of the increased production and lower costs包含多个抽象名词，使行文较为简练。
大学英语六级长难句解析100句
六级真题阅读长难句分析1.For hundreds of millions of years, turtles （海龟） have struggled out of the sea to lay their eggs on sandy beaches, long before there were nature documentaries to celebrate them, or GPS satellites and marine biologists to track them, or volunteers to handcarry the hatchlings （幼龟） down to the water 's edge lest they become disoriented by headlights and crawl towards a motel parking lot instead. （2009 年6 月）【分析】本句为复合句，主架为⋯turtles have struggled ⋯。
For hundreds of millions of years 为介词短语作时间状语。
before ⋯为时间状语从句，该从句采用的是there be 结构，主语为or 连接的三个名词（词组）：natural documentaries ，GPS satellites and marine biologists 和volunteers ，主语后的不定式均为主语的后置定语。
lest “以免”引导状语从句，采用虚拟语气。
【译文】数百万年以来，海龟们都挣扎着从海里爬出来，到沙滩上产卵，那时候还没有自然纪录片来记录它们的活动，没有GPS卫星和海洋生物学家跟踪它们，没有志愿者用手把小海龟放到水边以防它们被桅灯搞得迷失方向而爬向旅馆的停车场。
2.The figures prompted Oceana to petition the government to upgrade the level of protection for the North Atlantic loggerheads from “threatened ” to“endangered” —meaning they are in danger of disappearing without additional help. （2009 年6 月）【分析】本句为复合句，主架为The figures prompted Oceana ⋯。
六级阅读真题长难句解析
六级阅读真题长难句解析六级阅读真题长难句解析1. The notion that learning should have in it an element of inspired play would seem to the greater part of the academic establishment merely silly, but that is nonetheless the case.【译文】学习中应该包括具有启发性的娱乐这一观点对于大部分学术机构而言似乎是愚蠢的，但事实的确如此。
【析句】本例句的难点在于寻找主句的'主干。
很明显，主句由but连接两个并列句组成，but后的句子that is nonetheless the case 是简单句。
but前的句子主句是the notion would seem merely silly to the greater part of the academic establishment，to在这里作介词，这一介宾结构提前放在了谓语动词seem后，容易让人误以为是短语seem to的用法，结果导致理解失误。
最后主句主语the notion 有that引导的定语从句修饰。
2. Already the public agencies for adult education are swamped by the tide that has swept over them since depression began.【译文】从事成人教育的公共机构已经因为经济萧条开始以来席卷全国的趋势而陷入困境。
【析句】例句2的句子结构并不复杂，主句the public agencies for adult education are swamped by the tide, that has swept over them...作定语从句修饰the tide, 而定语从句中，又有since引导的时间状语从句，这个时间是修饰swept over这个动作的。
英语六级阅读理解长难句剖析
英语六级阅读理解长难句剖析英语六级考试中的阅读理解部分，经常出现一些长难句，给考生阅读和理解造成一定困扰。
本文将对英语六级阅读理解中的长难句进行剖析，帮助考生更好地理解和应对这些句子结构复杂的题目。
1. 倒装句型：In no way did I expect him to show up at the party.这句话的正常语序应该是：I did not expect him to show up at the party in any way.倒装句即将助动词或情态动词提前，主语放在谓语动词之后，从而给句子增加了一定的难度。
考生在阅读中要注意寻找这类句子，分析句子结构的变化。
2. 强调句型：It is John who broke the vase.这句话的正常语序应该是：John broke the vase.强调句型通过将强调部分提到句首，突出某个成分，增加了句子的复杂性。
考生需要注意识别这类句子，理解强调的重点。
3. 定语从句：The book, which was recommended by my teacher, is worth reading.这句话中的定语从句“which was recommended by my teacher”修饰前面的名词“book”。
定语从句有两种结构：限制性定语从句和非限制性定语从句。
限制性定语从句对修饰的名词起限定性作用，不能省略；非限制性定语从句对修饰的名词起补充说明作用，可以省略。
4. 同位语从句：I have no idea what she is talking about.这句话中的同位语从句“what she is talking about”解释说明了前面的名词“idea”。
同位语从句用来解释说明某一名词的具体内容，起进一步补充说明的作用。
5. 宾语从句：He asked me whether I had finished my homework.这句话中的宾语从句“whether I had finished my homework”充当了动词“asked”的宾语。
六级阅读真题长难句解析
六级阅读真题长难句解析关于六级阅读真题长难句解析下面是英语六级阅读真题长难句解析，供考生参考学习。
1. She recalls watching the ship, brightly lit, slipping into its dark grave - and into seeming nothingness, rarely mentioned for more than half a century.【译文】她回忆起看着轮船被火光照亮，慢慢沉入漆黑的墓穴，最后永远消失。
这场悲剧半个世纪以来极少被提起。
【析句】英语句子中存在多个动词时，常大量使用分词，保证句子中只有一个谓语动词。
本句中主句是She recalls watching the ship,recall是谓语动词，后面的一系列分词lit,slipping, mentioned的主语都是the ship，通过动作与the ship的主动被动关系决定使用的是现在分词还是过去分词。
在现在分词slipping后跟有两个并列的into短语。
2. Now Germanys Nobel Prize-winning author Gunter Grass has revived the memory of the 9,000 dead, including more than 4,000 children - with his latest novel Crab Walk, published last month.【译文】如今，德国诺贝尔奖作家冈特格拉斯用上个月最新出版的'《蟹行》一书重新将这份惨烈的记忆9000人死亡，其中有4000是儿童在人们心中唤起。
【析句】复合句。
主句Ginter Grass has revived the memory of the 9000 dead是主句，Germanys Nobel Prize-winning author 作主语的同位语。
大学英语六级真题阅读长难句分析
大学英语六级真题阅读长难句分析1. In our culture, the sources of what we call a sense of “mastery”—feeling important and worth-while-and the sources of what we call a sense “pleasure”-finding life enjoyable-are not always identical. (1994. 阅读. 1. Text 4) 【译文】在我们的文化中，我们常说的“控制感”——感觉自己很重要有价值，与“快乐感”——发现生活的乐趣，它们的来源是不尽相同的。
【析句】例句1句子看起来很长，但结构并不复杂。
句子主干是the sources of... and the sources of...are not always identical,有两个并列的主语the sources of,而两个of后各有一个what引导的宾语从句what we call a sense of...。
同时，主语后各有一个现在分词伴随状语，位于破折号后。
2. Ironically, those things that keep us from knowing another person too well (e.g., secrets and deceptions) may be just as important to the development of satisfying relationship as those things that enable us to obtain accurate knowledge about a person (e.g., disclosure and truthful statements). (1995. 阅读1. 1. Text 1)【译文】让人感到讽刺的是，那些阻碍我们了解别人的东西(比如秘密和欺骗)对于培养令人满意的友谊，或许与那些使我们准确了解别人的东西(比如坦白和真话)同样重要。
英语六级阅读真题长难句的解析
英语六级阅读真题长难句的解析下面是20XX年6月英语六级阅读真题长难句解析，请考生仔细分析句子构造。
1. Finally, advertisers try to begin mercials with sounds that are highly different from those of the programming within which the mercial is buried.【译文】最后，广告商费尽心机使广告开始的声音不同于其他节目的声音。
【析句】复合句。
主句advertisers try to begin mercials with sounds,随后是that引导定语从句that are highly different from those of the programming修饰sounds,而定语从句中the programming后也有which引导的定语从句修饰。
2. But the developing countries may be impoverished, with populations growing so rapidly that using the land is a means to temporarily avoid worsening poverty and starvation.【译文】但是，随着人口迅速增长，只能卖出土地以暂时防止贫苦和饥荒恶化，开展中国家可能会因此一贫如洗。
【析句】复合句。
主句the developing countries may be impoverished,with populations growing so rapidly that...是with引导伴随状语。
可以看出，with伴随状语中运用了so...that...词组，而that引导句子using the land is a means to avoid...。
6月英语六级阅读长难句解
6月英语六级阅读长难句解1. It is not so bad being ignorant if you are totally ignorant; the hard thing is knowing in some detail the reality of ignorance, the worst spots and here and there the not-so-bad spots, but no true light at the end of the tunnel nor even any tunnels that can yet be trusted. (1991. 阅读. 12月. Text 3)2. The theoretical separation of living, working,traffic and recreation which for many years has been usedin town-and-country planning, has in my opinion resulted in disproportionate attention for forms of recreation far from home, whereas there was relatively little attention for improvement of recreative possibilities in the direct neighbourhood of the home. (1991. 阅读. 12月. Text 4)3. The very best standard of living is nothing if it is not possible to take a pleasant walk in the district, if the children cannot be allowed to play in the streets, because the risks of traffic are too great, if during shopping you can nowhere find a spot for enjoying for a moment the nice weather, in short, if you only feelyourself at home after the street-door of your house is closed after you. (1991. 阅读. 12月. Text 4)。
大学英语四六级语法真题长难句解析
四六级真题长难句分析
基本结构的长难句
1.断开：连接词断开,结束于下一个连接词前
Although it has been nearly 30 years since the first commercial mobile-phone network was launched, advertisers have yet to figure out how to get their messages out to mobile-phone users in a big way. CET-4, 201312 选词填空
四六级真题长难句分析
基本结构的长难句
1.断开：连接词断开,结束于第二个谓语动词前
Though the United States has fewer women in the workforce, American women who choose to be employed are far more likely to work fulltime and to hold high-level jobs as managers or professionals. CET-6, 201406长篇阅读
基本结构的长难句
1.断开：分析主谓
This is the best movie I have seen.
主谓
主谓
The present he gave me was very amazing.
四六级真题长难句分析
基本结构的长难句
1.断开：分析主谓
This is the best movie I have seen.
四六级真题长难句分析
基本结构的长难句
1.断开：连接词断开,结束于第二个谓语动词前
历年英语六级真题长难句摘选精析
历年真题长难句摘选精析1．Our linguistic（语言上的）and cultural blindness and the casualness with which we take notice of the developed tastes, gestures, customs and languages of other countries, are losing us friends, business and respect in the world.【分析】这是一个复杂的简单句；句子的主干是Our blindness and casualness are losing us. with which 引导一个定语从句修饰casualness. take notice of 意思是“注意到”。
【译文】我们对语言、文化的无知，以及那种对其他国家形成的品味、手势、风俗和语言的漫不经心的态度，正使我们在世界上失去朋友，错过商机，丧失威信。
2．A simple trip around the yard in a pair of those babies eliminates(消除) all need to call for a lawn(草坪) care specialist, and provides the perfect-sized holes to give any lawn oxygen without all those messy chunks (块)of dirt lying around.【分析】这是一个复杂的简单句；句子的主干是A simple trip eliminates all need and provides holes. messy chunks of dirt：乱七八糟的脏东西。
【译文】只要穿这种娇小的鞋在院子里走一走，就完全没必要请修剪草坪的专家了，因为这会形成大小合适的洞为草坪提供氧气，周围还不会留下那些乱七八糟的脏东西。
(全)大学英语六级真题卷-阅读理解长难句拆解,翻译
大学英语六级真题卷-阅读理解长难句拆解，翻译Schools are not just a microcosm (缩影）of society: they mediate it too. 译文：学校不仅仅是社会的浓缩，它能反映最真实的现实。
词法：mediate，动词有表达，传递的意思。
此处的意思，要结合文章的主旨来理解。
逻辑推理：本句是引出文章主要内容的作用。
真实目的是通过学习表现社会贫富差距。
概括力极强的句子，在英语中要寻找真实的具体意义，见下句。
The best seek to alleviate the external pressures on their pupils while equipping them better to understand and handle the world outside-- at once sheltering them and broadening their horizons.译文：一流大学既想减少(外部)社会带给学生的压力，又想让学生深刻得了解社会，深入得接触社会——两全其美：不让学生经历风雨又想丰富他们的见识。
大学英语六级真题翻译理解要点：破折号的出现，说明本句话前后意思一致。
while即表示同时，又表示转折。
即不想社会干扰学生，又想学生多接触社会，这是一处矛盾。
所以，at once 此处表述一个时间做两件事。
这里学校既想···又想···，正是下文提及的两处ideals。
This is ambitious in any circumstances and in a divided and unequal society the two ideals can clash outright(直接地）.译文：这种完美的理想太难实现，而且在不和谐，贫富差距大的社会，会导致尖锐的矛盾。
大学英语六级真题长难句解析翻译要点：ambitious，这里是耗时，耗力，难以实现的意思。
6月英语六级阅读真题长难句解析
6月英语六级阅读真题长难句解析1. It is the capacity of the puter for solving problems and making decisions that represents its greatest potential and that poses the greatest difficulties in predicting the impact on society.【译文】正是电脑解决问题、做出决定的能力，不仅表现出它的宏大潜力，也使得预测社会影响方面困难重重。
【析句】本句的主干是强调句句型，It is...that..., 特别之处在于有两个并列的that从句，即It is the capacityof...that represents...and that pees...。
for solving problems and making decisions是介宾短语作目的状语。
2. John Dewey has said in all seriousness that the part played by custom in shaping the behavior of the individual as over against any way in which he can affect traditional custom, is as the proportion of the total vocabulary of his mother tongue over against those words of his own baby talk that are taken up into the language of his family.【译文】约翰杜威曾经非常严肃地指出：风俗在塑造个人行为方面所起的作用，与个人对传统风俗产生的任何影响相比，其比率就如同个人学习母语的总词汇量，与他的自发的孩童语言成为其家庭语言的词汇量之比。
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历年英语六级真题长难句摘选精析历年真题长难句摘选精析1．Our linguistic（语言上的）and cultural blindness and the casualness with which we take notice of the developed tastes, gestures, customs and languages of other countries, are losing us friends, business and respect in the world.【分析】这是一个复杂的简单句；句子的主干是Our blindness and casualness are losing us. with which 引导一个定语从句修饰casualness. take notice of 意思是“注意到”。
【译文】我们对语言、文化的无知，以及那种对其他国家形成的品味、手势、风俗和语言的漫不经心的态度，正使我们在世界上失去朋友，错过商机，丧失威信。
2．A simple trip around the yard in a pair of those babies eliminates(消除) all need to call for a lawn(草坪) care specialist, and provides the perfect-sized holes to give any lawn oxygen without all those messy chunks (块)of dirt lying around.【分析】这是一个复杂的简单句；句子的主干是A simple trip eliminates all need and providesholes. messy chunks of dirt：乱七八糟的脏东西。
【译文】只要穿这种娇小的鞋在院子里走一走，就完全没必要请修剪草坪的专家了，因为这会形成大小合适的洞为草坪提供氧气，周围还不会留下那些乱七八糟的脏东西。
3．But my own worry today is less that of the overwhelming problem of elemental literacy than it is of the slightly more luxurious problem of the decline in the skill even of the middle-class reader, of his unwillingness to afford those spaces of silence, those luxuries of domesticity and time and concentration, that surround the image of the classic act of reading.【分析】这是一个带有比较级的句子，主干是：But my own worry today is less that than.【译文】但我今天所担心的不是广泛泛滥的文盲问题，而是更加奢侈一点的问题，即：对中产阶级读者读写技能下降了的担忧，他们不愿把安静的地方、难得的家庭生活的机会、时间和注意力用来读书，而典型的读书活动正需要这些。
4．This violation of concentration, silence, solitude（独处的状态）goes to the very heart ofour notion of literacy; this new form of part-reading, of part-perception against background distraction, renders impossible certain essential acts of apprehension and concentration, let alone that most important tribute any human being can pay to a poem or a piece of prose he or she really loves, which is to learn it by heart.【分析】这是一个并列句。
第一个分句的主干是：this violation goes to the heart of literacy.，第二个分句的主干是this new form renders…,let alone …。
【译文】这种对精神集中、安静、独处状态的妨碍同阅读概念直接冲突；在娱乐背景下半读书半分散精力的读书新方式不可能专心致志地理解，更不要说任何一个人对真正喜爱的一首诗或一篇散文所能表示的最大赞赏是将其背诵下来了。
5．And with doubtful prospects for a short-term financial return, with the cold war a rapidly fading memory and amid a growing emphasis on international cooperation in large space ventures, it is clear that imperatives other thanprofits or nationalism will have to compel human beings to leave their tracks on the planet's reddish surface.【分析】句子的主干是it is clear that imperatives will have to compel human beings to leave tracks on the planet’s reddish surface.；两个with分别引导两个伴随状语。
【译文】由于短期经济回报有疑问、冷战在人们记忆中迅速消失，以及越来越强调在大规模空间探险中的国际合作；很清楚，不是经济利益或国家利益，而是必须履行的使命将迫使人类在那个红色行星的表面留下足迹。
6．The issue of whether life ever existed on the planet, and whether it persists to this day, has been highlighted by mounting evidence that the Red Planet once had abundant stable, liquid water and by the continuing controversy over suggestions that bacterial fossils rode to Earth on a meteorite（陨石）from Mars.【分析】句子的主干是This issue has been highlighted.由两地whether引导的从句做of的宾语；两个that所引导的从句分别做evidence和suggestions的同位语。
【译文】由于越来越多的证据表明这个红色行星上曾经有稳定而丰富的液态水，又因人们对落到地球上的火星细菌化石陨石的说法一直有争论，所以火星上是否存在过生命、是否延续至今的问题一直引人注目。
7．What he has demonstrated, he believes, is that lack of control over an event, not th4e experience itself, is what weakens the immune system.【分析】that和what分别引导两个表语从句；he believes是插入语，应该前置。
【译文】他认为，他所证明的是缺乏控制事件的能力会削弱免疫系统，而非经历本身。
8．Jay Weiss, a psychologist at Duke University School of Medicine, has shown that animals who are allowed to control unpleasant stimuli don't develop sleep disturbances or changes in brain chemistry typical of stressed rats.【分析】that引导的宾语从句中又包含一个who 引导的定语从句，修饰animals。
typical of sb.意思是“以……为特征的”。
这句话中这个词组之前省略了，which is，是两个现象的定语从句。
【译文】杜克大学医学院的心理学家琼·伟斯已经证明：被允许控制不快刺激的动物不会出现睡眠障碍，大脑化学成分也不发生变化，这些正是老鼠紧张的典型表现。
9．The reasons why they don't, and why the environment has not been ruined, have to do with prices, technological innovation, social change and government regulation in response to popular pressure.【分析】句子的主干是The reasons have to do with prices, technological innovation, social change and government regulation. 两个why均引导定语从句修饰reasons. in response to popular pressure做regulation的后置定语。
【译文】为什么它们没发生，为什么环境被毁灭，这同价格、技术创新、社会变革和政府因公众压力所制定的规章有关。
10．What has happened is that every time a material seems to be running short, the price has risen and, in response, people have looked for new sources of supply, tried to find ways touse less of the material, or looked for a new substitute.【分析】这是简单的复杂句，句子的主干是What has happened is that。