句子讲解：
4、A game that is very popular with these young swimmers is the underwater tricycle race.
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。
语言点 that is very popular with these young swimmers 作定语修饰 game。
underwater ['ʌndə'wɔ:tə]
adj. 在水中的;水面下的
adv. 在水下
n. 水下
例句:
1. With this equipment, you can explore a new world of adventure and underwater beauty!
有了这套设备，你就能去冒险探索一个美丽的海底新世界。
5、Tricycles are lined up on the floor of the pool seven feet under water.
三轮车并排放在7英尺深的游泳池底上。
语言点 sth. be lined up某物被排列成了一排
tricycle [,traisikl]
n. 三轮车
例句:
1. The application range and feature and principle and structure of the electric flatbed tricycle is introduced.
介绍了一种电动平板车的用途、特点、工作原理及结构设计等。
lined
adj. 有内衬的;具线纹的
v. 排队(line的过去分词);填满
例句:
1. People lined up at the bus stop.
人们在公共汽车站排起了队。
6、The children compete against each other to reach the other end of the pool.
孩子们比赛看谁先到达游泳池的另一边。
语言点 compete against each other 互相竞争
compete [kəm'pi:t]
vi. 竞争;比赛;对抗
例句:
1. About 800 athletes competed in fifteen events.
大约有800名运动员参加了15个项目的竞赛。