31.

　　noise名，噪音 Don't make any noise.

　　noisy形，吵闹的 much too noisy

　　noisily副，吵闹地 talk noisily

　　32.

　　noise噪音

　　sound声音 We sat listening to the sound of the waves

　　 听起来The music sounds beautiful.

　　voice嗓音 The singer has a sweet voice.

　　33.

　　provide提供

　　provide a chance for the boy=provide the boy with a chance

　　offer提供

　　offer a chance to the boy=offer the boy a chance

　　34.

　　other别的 ，加名词 other students

　　another另一个I don't like the pair of shoes,would you like to show mean other pair?

　　the other两个中的另一个,常用one…the other Here is a shoe,where's the other one?

　　others= other+名词

　　35.

　　over/ under年龄的上下

　　above/ below温度，楼层的上下

　　36.

　　peace名词，和平 love peace

　　peaceful形，宁静的 a peaceful village

　　peacefully副，和平地

　　we hope to solve the problem peacefully.

　　37.

　　pleasure名，乐意。

　　对方请求帮助—With pleasure.

　　帮助后对方感谢—My pleasure./ It's my pleasure.

　　pleasant形， 修饰物a pleasant trip

　　pleased 形，修饰人I am pleased with the robot.

　　38.

　　pollute动，污染 The water will be polluted if you do that.

　　polluted形，被污染的 Our planet is becoming more and more polluted and crowded.

　　pollution名，污染 noise pollution

　　39.

　　quiet安静的 keep quiet

　　quite相当 quite quiet

　　40.

　　receive收到

　　accept接受

　　I received a valuable gift but I didn't accept it because of its value.