运用：Many young adults are big spenders. 许多年轻人花钱大手大脚。
例2：1949 witnessed the liberation of China.
运用：The dawn of the new century witnessed the increasing popularity of the web.
例3：He got off the plane. Reporters surrounded him.
这两个句子没有语法问题，但放在一起就显得缺乏连贯性。如果改成He got off the plane and was surrounded by reporters 或者He got off the plane. And he was surrounded by reporters 就可以了。所以平时要多研究英文句子是如何衔接的。·四六级作文52活用句型
Some studies suggest that straight, horizontal bars painted across roads can initially cut the average speed of drivers in half. However, traffic often returns to full speed within months as drivers become used to seeing the painted bars.
30. What does the author say about straight, horizontal bars painted across roads?
A) They cannot be applied successfully to traffic circles.
B) They tend to be ignored by drivers in a short period of time.
C) They are falling out of use in the United States.
D) They are applicable only on broad roads
请用心体会initially 这个词的内涵，其实，你一看到这个词，就应该准确predict后面可能会有考点，而且肯定会出现but, however, ultimately 一类的转折、对比词。答案B)。