【句型1】Modern alpinists try to climb mountains by a route which will give them good sport, and the more difficult it is, the more highly it is regarded.（Lesson 3）
【譯文】現代登山運動員力圖沿著一條能從中得到鍛煉樂趣的路線登山。他們認為路線愈艱難則愈為人們重視。
【講解】the more…, the more…這種句型叫比例句。《流利英語》中另有三句可一并學習。
【例1】The further off this solid obstruction, the longer time will elapse for the return of the echo. （Lesson 7）
【譯文】離固體障礙物越遠，回聲返回所用時間就越長。
【講解】obstruction后省略了is。
【例2】We are so familiar with the fact that man ages, that people have for years assumed that the process of losing vigour with time, of becoming more likely to die the older we get, was something self-evident, like the cooling of a hot kettle or the wearing-out of a pair of shoes. （Lesson 37）
【譯文】我們都熟悉這樣的事實：人總是要衰老的；人們多年來一直認為，生命隨著時間流逝而衰退或人越老越可能死掉這一過程不言而喻，恰似一壺熱水會冷卻、一雙鞋會被穿破一樣。
【講解】becoming more likely to die the older we get是變形的比例句，等于the older we get, the more likely we will die。
【例3】The stronger the will, the more futile the task. （Lesson 46）
【譯文】這種意志越強烈，這種嘗試越徒勞。
【講解】will后省略了is，task后省略了will be。