Lesson94 Future champions 未来的冠军
课文原文：
Experiments have proved that children can be instructed in swimming at a very early age. At a special swimming pool in Los Angeles, children become expert at holding their breath under water even before they can walk. Babies of two months old do not appear to be reluctant to enter the water, It is not long before they are so accustomed to swimming that they can pick up weights from the floor of the pool. A game that is very popular with these young swimmers is the underwater tricycle race. Tricycles are lined up on the floor of the pool seven feet under water. The children compete against each other to reach the other end of the pool. Many pedal their tricycles, but most of them prefer to push or drag them. Some children can cover the whole length of the pool without coming up for breath even once. Whether they will ever become future Olympic champions, only time will tell. Meanwhile, they should encourage those among us who cannot swim five yards before they are gasping for air.
译文：
实验证明，儿童在很小的时候就可以开始学习游泳。在洛杉矶的一个特设的游泳池里，孩子们甚至在还没有学会走路时就已经能熟练地在水下屏住呼吸了。两个月的婴儿并未显得不愿意入水。他们很快便适应了游泳，以致能捡起池底的物品。这些幼小的游泳运动员非常喜爱的一种游戏是水下三轮车比赛。三轮车并排放在7英尺深的游泳池底上。孩子们比赛看谁先到达游泳池的另一端。很多孩子用脚蹬车，但多数孩子更愿意推或是拉着三轮车。有些孩子能够跑完游泳池的全长而不用露出水面换气。他们将来是否能成为奥林匹克的冠军，这只能由时间来作出回答。与此同时，他们对我们中的那些游不了5码就已喘不过气来的人应该是种鼓舞。
以下是文本中涉及的语法点和知识点：
被动语态 (Passive Voice)：文中使用了被动语态 "can be instructed," "are lined up," "are so accustomed to swimming," "can cover the whole length."
例子："Experiments have proved that children can be instructed in swimming at a very early age."
定语从句 (Relative Clauses)：文中使用了定语从句来修饰名词，如 "that is very popular with these young swimmers," "who cannot swim five yards before they are gasping for air."
例子："A game that is very popular with these young swimmers is the underwater tricycle race."
时间状语从句 (Temporal Clauses)：文中使用了时间状语从句，如 "before they can walk," "when they can pick up weights from the floor of the pool."
例子："Children become expert at holding their breath under water even before they can walk."
比较结构 (Comparative Structures)：文中使用了比较级 "more accustomed" 来表示逐渐习惯于游泳。
例子："It is not long before they are so accustomed to swimming that they can pick up weights from the floor of the pool."
条件句 (Conditional Sentences)：文中使用了条件句，如 "Whether they will ever become future Olympic champions, only time will tell."
例子："Whether they will ever become future Olympic champions, only time will tell."
形容词和副词用法 (Adjective and Adverb Usage)：文中使用了形容词 "special," "very early," "young," "whole," 和副词 "very," "before," "not long."
例子："At a special swimming pool in Los Angeles, children become expert at holding their breath under water even before they can walk."
数字表达 (Numerical Expressions)：文中使用了数字表达，如 "two months old," "seven feet under water," "five yards."
例子："Babies of two months old do not appear to be reluctant to enter the water."
这些语法和语言元素被用于描述婴儿在很小的时候就接受游泳训练，并能够在水下进行各种活动，强调了这些年幼的游泳者在水中的适应能力和活动能力。