新概念英语第四册 Lesson 7 Bats 课件

Lesson 7 Bats 蝙 蝠 ① Not all sounds made by animals serve as language, and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian role. utilitarian adj. 实用主义的 designed to be useful ugly utilitarian buildings utilitarian furniture Not all sounds made by animals serve as language, and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian role. not 与全部肯定词all, every, everything, everyone, both 连用，多表示部分否定。 All the glitters is not gold. All of the arrows didn’t hit the target. All civilized people can’t be cannibals. Not all the water in rough rude sea can wash the balm off from an anointed king. Not all sounds made by animals serve as language, and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian role. serve as... / be used as.... / act as.... / function as.... She serves as an impressive reminder of the great ships of past. have only to do ... to do...只须……就可以…… You have only to press the button to call the nurse. You have only to click the following link to download the software. have only to turn to sth. to do ...只需借助于……就可以…… 造句：我们只需借助于1936年奥运会的具体例子就可以知道国际体育比赛会导致疯狂的仇恨。 We have only to turn to the concrete example of the 1936 Olympic Games to know that international sporting contests lead to orgies of hatred. ② To get a full appreciation of what this means we must turn first to some recent human inventions. ③ Everyone knows that if he shouts in the vicinity of a wall or a mountainside, an echo will come back. ④ The further off this solid obstruction, the longer time will elapse for the return of the echo. elapse v. 时间流逝 Three years elapsed. go by / pass Three years went by / passed. “lapse” = slide relapse relapse into bad habits The further off this solid obstruction (is), the longer time will elapse fo