1.  When you go to the dark-town in the D. C. , you will find several teenagers stand by the road, laughing at the passengers.

2.  If we just improve our vocabulary by translating and memorizing long lists of test words, we will find we do not know how to use the words in our own article.

3.  When you read the encyclopaedia, you will find that you not only improve your vocabulary, especially academic words, but also know numerous things about the math, physics, chemistry, society, even the culture of any country.

4.  If you can understand the contents, you will find that your work got paid.

5.  When we learn English, we can find that we need to remember words firstly.

6.  When we try to memorize long lists of test words we will find that it is very boring and inefficient which devastates our tendency to learning.

7.  If you have watched a beauty contest, you must find it's hard to cater to all different judges and audience.

8.  When we look back on the brilliant and excellent life of Jobs, we may find that what Jobs did was to bring things appearing in fiction movies into reality, and cause the world to imitate .

9.  When you in the situation which you can never get help from others, you may find you have no way to solve the problem you meet.

10.  If you can get the best of all method of communication, you may find that most of your trouble can be easily solved with your friends' help.