高中英语 难句 剖析 拓展（Unit 21 HUMAN BIOLOGY）学案 北师大版

难句·剖析·拓展1. Many contemporary amateur athletes would have broken world records if they had taken part in the first Olympic Games.假如许多业余选手参加了第一届奥运会的话，他们有可能打破世界纪录。剖析 这是一个主从复合句，Many contemporary amateur athletes would have broken world records 是主句, if they had taken part in the first Olympic Games 是条件状语从句。2. Taking these drugs is known as “doping” and although they enhance performance, they also cause serious health problems in later life for those who abuse them.众所周知，服用这些药就是服“兴奋剂”。尽管兴奋剂有助于提高成绩，但同时也会给那些滥用兴奋剂的运动员招来日后生活中的健康麻烦。剖析 这是一个含有 and 的并列复合句，在第一个并列分句 Taking these drugs is known as “doping” 中，主语和宾语都是动名词，在第二个并列分句中，although they enhance performance 是让步状语从句，they also cause serious health problems in later life for those 是主句，who abuse them 是定语从句。3. Doping is not only a problem in athletics, it is part of every sport where athletes seek to achieve beyond their natural limits and are prepared to cheat to do so.服用兴奋剂不仅仅是田径运动的问题，也是有运动员想寻求取得超常体育成绩而准备欺骗的每一项体育项目的问题。剖析 这是一个省略了 but also 的并列复合句，Doping is not only a problem in athletics 是第一个并列分句，（but also）it is part of every sport 是第二个并列分句。where athletes seek to achieve beyond their natural limits and are prepared to cheat to do so 是定语从句。拓展 关系副词 where 引导定语从句除了修饰地点名词 place, village, town, city, school, home 外，还可以修饰下列名词 sport, spot, point, conditions, mark 等名词。4. The Olympic spirit－ the spirit of competition which emphasises taking part rather than winning-has been violated by the desire to succeed at all costs.人们不...