1. curious adj. 好奇的；奇怪的，不寻常
  It is good to be curious about the world around you.
  I am curious about what he said just now.
  curiosity 好奇心

2. preserve  vt 保存，保护，保持，维持
  The government has spend a lot of money to preserve places of historical places.
  You’d better preserve meat or fish in salt.
  It’s the duty of the police to preserve public order.

3. present adj. 在场的，出席的，现在的
  Many people are present at the meeting.
  At the present time =(At present) more and more people buy cars.
  n. 礼物
  People would like to send presents on Christmas day.
  Vt. 提出，呈现，介绍
  When you finish your painting ,you should present it to others.

4. coincidence  n 巧合，碰巧
  What a coincidence ! I was there at the same time as you .
  By coincidence, we studied and lived in the same city.

5. disturb vt 打扰，扰乱
  Now he is asleep; don’t disturb him.
  I have heard some bad news, which has disturbed me very much.
  注意 ：interrupt  打断，中断
  When others are talking ,it is impolite of your to interrupt them.

6. result n. 结果 vi。导致 ；结果
  If you obtain good results ,you have to work hard.
  He was ill. As a result ,he was absent from school.
  He was absent from school as a result of his illness.
  Hard work results in success. =(lead to)
  Success results from hard work.

7. certain adj. 确定的，肯定的
  I’m certain that he will come .
  We are certain of our victory.
  He is certain to come.
  It is certain that he will come.
  注意与sure的区别
  be sure of/about/to do /that+clause
  但是在It is certain that …中certain不能换成sure

8. compare  vt 比较
  ~ A with B 把A和B进行比较
  ~A to B 把A比作B(打比方)
  If you compare your work with his ,you will find out whose work is better.
  People would like to compare teachers to guarders.
  Compare vi 
  ~ with  与...匹敌；相比
  He is not better than his partner in the work.He can’t compare with his partner.
  Nobody can compare with him in paintings.

9. express  vt 表达，表示
  No words can express my thanks.
  He can express himself in good clear English now after four years' hard learning.
  express  adj. 快速；快递  an express train
  expression  n 表达，表情，词句