【托福培训-阅读】长难句备考计划之打哈欠

2016-08-22 14:11

来源：上海新东方

作者：上海新东方整理

为了帮助大家熟悉掌握托福阅读长难句，托福学习高效进行，新东方在线托福网为大家带来托福阅读长难句：打哈欠一文，希望对大家托福备考有所帮助。更多精彩尽请关注新东方在线托福网!

According to conventional theory, yawning takes place when people are bored or sleepy and serves the function of increasing alertness by reversing, through deeper breathing, the drop in blood oxygen levels that are caused by the shallow breathing that accompanies lack of sleep or boredom.(TPO18, 45)

conventional /kən'vɛnʃənl/ adj. 传统的;老套的，千篇一律的;约定的

alertness /ə'lə:tnis/ n. 警戒，机敏

reverse /rɪ'vɜːs/ v. 使(某物)反转; 将(某物)翻转;转变

我是分界线，大家先一遍速读看是否理解

(According to conventional theory), yawning takes place (when people are bored or sleepy)and serves the function (of increasing alertness) (by reversing, through deeper breathing, the drop in blood oxygen levels) (that are caused by the shallow breathing) (that accompanies lack of sleep or boredom).(TPO18, 45)

托福阅读长难句100句分析：

这个句子的主干就是：

yawning takes place and serves the function

修饰一：(According to conventional theory)，介词短语

中文：根据传统理论

修饰二：(when people are bored or sleepy)，从句

中文：当人们感到厌烦或困倦时

修饰三：(of increasing alertness)，介词短语

中文：增强警觉

修饰四：(through deeper breathing)，插入语

中文：通过深呼吸