谢谢三、文章长难句分析与佳句赏析
①Perhaps it is humankinds long suffering at the mercy of flood and drought that makes the idea of forcing the waters to do our bidding so fascinating.
该句子的主干结构是强调句型it is...that...，that后面部分含有make+宾语（n.）+宾补（a.）的复合结构make the idea so fascinating，idea后是of引导的介词短语做定语。at the mercy of 意为\"听凭…摆布，完全受…支配\"，如：at the mercy of fate受命运的摆布；bid（动词）意思很多，可表示\"祝愿；命令，要求，吩咐；投标，出价，报价；尝试\"，如：bid for independence争取、试图（获得）独立；Turkeys bid for First World status includes the giant土耳其想通过阿塔特克大坝的建设获取第一世界地位。句中do our bidding意为\"按照我们的指示做，按照我们的意愿办事\"。
②It doesnt help that building a big, powerful dam has become a symbol of achievement for nations and people striving to assert themselves.
该句子的主干是it doesnt help that... ，主语it代指上文中提到的\"大的未必总是美的\"这个教训，谓语help后是一个从句，其主干是building a dam has become a symbol of achievement；分词短语striving to assert themselves修饰nations and people。it doesnt help意思是\"无法阻止，不起作用\"。
③The Aswan Dam, for example, stopped the Nile flooding but deprived Egypt of the fertile silt that floods leftall in return for a giant reservoir of disease, which is now so full of silt that it barely generates electricity.
该句的核心句是The Aswan Dam stopped the Nile flooding but deprived Egypt of the silt，silt后是that引导的定语从句that floods left做定语；破折号后面部分做整个句子的状语，介词短语in return for（作为回报）的宾语是giant reservoir of disease，后面带了一个which引导的从句对它进行修饰。
④This week, in the heart of civilized Europe, Slovaks and Hungarians stopped just short of sending in the troops in their contention over a dam on the Danube.
句子主干是Slovaks and Hungarians stopped sending in the troops，主语之前是时间状语和地点状语。句末的介词短语in their contention over a dam on the Danube做原因状语，指出两国派兵的原因。short of意思是\"离…有，差一点就…\"，如：We stopped a mile short of the top.（我们在离山顶一公里处，即快到山顶的地方停住了）；send in意思是\"派遣\"。
⑤Proper, scientific study of the impacts of dams and of the costs and benefits of controlling water can help to resolve these conflicts.
句子主干是study can help to resolve conflicts；谓语study后接了两个由and连接的并列的of介词短语，说明study的内容，分开看应该是study of the impacts of dams 和study of the costs and benefits of controlling water。
⑥It is time that the world learned the lessons of Aswan.
It is time that...该…的时候了，是一种虚拟语气的形式，后面从句中谓语注意要用过去时。强调做某个事情的时机成熟了。如：It is time that we learned to take care of ourselves.
佳句赏析
①Few creations of big technology capture the imagination like giant dams.
表达人们对宏伟、美好事物的欣赏和赞叹。如：Few paintings can capture such rich imagination like Mona Lisas smiling.
②But to be fascinated is also, sometimes, to be blind.
这里暗含的意思是告诫人们不要被表面的美好景象迷惑，要理性地看到潜在的危害。如：Big cities fast development has really provided us fascinating conveniences and pleasure. However, to be fascinated is also, sometimes, to be blind.
③Several giant dam projects threaten to do more harm than good.
这种表达也用来暗示某种事物是一把双刃剑，不能只看到好的一面，而忽略了潜在的危险。
④The lesson from dams is that big is not always beautiful.
这种表语从句结构可以用来总结经验教训。如：The lesson from this bad exam is that no pains, no gains.
⑤But big dams tend not to work as intended.
表达一种事与愿违的遗憾。如：His parents put too much hope on the child, but his performance tended not to work as intended.
四、核心词汇与超纲词汇
(1) capture（v.）夺得，攻占；捕获；（n.）捕获，俘虏
(2) drought（n.）旱灾
(3) fascinating（a.）迷人的；fascinate（v.）迷住，强烈吸引
(4) strive（v.）（to）奋斗努力
(5) cement（v.）胶合；巩固，加强；（n.）水泥；胶泥，胶接剂
(6) deprive（v.）（of） 夺去，使丧失
(7) contention（n.）争夺，竞争；争吵，口角；contend（v.）斗争，竞争；坚决主张
(8) goahead（n.）批准，同意；如：Were all ready to start the new book, as soon as we get the goahead from the people concerned.
(9)wrongheaded（a.）错误判断的；坚持错误的，执迷不悟的
(10) hydroelectric（a.）水电的；hydro：前缀，表示\"水\"，\"液体\"。如：hydrobiology 水生物学；hydrocooling 水冷法；hydromania 投水狂，自溺 |
