16 more than 多于
17 less than   少于
18 a few times    几次
19* surprise- surprised- surprising
be surprised        ①that  +句子
对…感到惊讶   ② at sth
                           ③ to do sth
do sth in surprise    做某事惊讶
to one’s surprise    使某人惊讶
*I am surprised that  you would like to help me.
你愿意帮助我我很惊讶.
*I am surprised at your answer.
对于你的答案我很惊讶.
*I was surprised to meet him.
=I met him in surprise.
=To my surprise, I met him .
 见到他我很惊讶.
His surprising answer made us feel surprised.他的出人意料的回答使我们很惊讶。
20 use the Internet for fun 
为了娱乐使用电脑
21 by using the Internet
通过使用网络
22 by watching game shows
通过看游戏节目
23 through exercise 通过运动
24 such as  例如,   像…一样
exercise such as playing sports
像体育运动这样的锻炼形式
25 spend time with your friends
 与朋友共度美好时光
26 the  best way to relax
放松最好的办法
27 go to the dentist
  =see the dentist 去看牙医
28 go to the dentist for teeth cleaning
为了清洗牙齿去看牙医
29 a 16-year –old student 
一名16岁的学生
30 the answers to the questions about watching TV
   关于看电视这个问题的答案