其次，那些词不宜化为关键词呢？
在文章中反复出现的词语，或者在标题中出现的词语最好不要划定为关键词，因为他们大多是都是能反应文章主旨的词，会在文章的多出出现，为关键词回归定位带来不变。
注意：划定关键词是为了帮助考生快速回归原文找到与之相对的内容，但并非关键词越多越好，最好控制在1~2个以内。
接下来大家动手来练习练习，找找关键词吧！
1. It is estimated that water use will rise by 50% in the next 30 years. (2009综合A)
2. The American young people feel disappointed at Hillary’s failure to win the nominee. (2009综合A)
3. Most developed countries will face water shortage in 20 years. (2009综合A)
4. Hillary Clinton has become the presidential nominee for the Democratic Party. (2009综合 B)
5. The little known George Mason University was a dark horse because_______. (2009 综合B)
看看你找到关键词了吗？
1.“50%”，“30 years”
2.“American young people”
3.“20 years”
4.“the Democratic Party”(全文通篇讲希拉里。克林顿，故不选“Hillary Clinton”为关键词)
5.“George Mason University”
