詞性重點考查的就是詞性的混淆，主要是名詞與動詞的誤用、名詞與形容詞的誤用以及形容詞與副詞的誤用。做這類改錯題，首先要判斷詞性及詞在句中的位置，然后根據(jù)它們在句中所處的位置來確定詞性是否正確。一般說來，形容詞修飾名詞，副詞修飾動詞，副詞修飾形容詞。例如說到某個問題的嚴(yán)重性，會用increasingly serious（越來越嚴(yán)重），用副詞修飾形容詞，不能說increasing serious。
　　考點例析：
　　例1：Most experts believe this can continue even if the population
　　doubles by the mid-21st century,although feeding I0 billion people
　　will not be easy for politics, economic and environmental reasons S6.___
　　解析：reasons有三個修飾詞politics, economic， environmental , 后兩個是形容詞，第一個也應(yīng)該是一致的，所以把politics改稱political。
　　例2：Culture is essentially to our humanness. It provides a kind of S8.______
　　map for relating to others.
　　解析：做表語時，應(yīng)該使用形容詞而不是副詞，故將essentially -%26gt; essential。
　　例3：Their experiments have shown that reading disorders are most
　　likely the result of what is, in effect, faulty wiring in the brain—
　　not lazy, stupidity or a poor home environment S4._____
　　解析：lazy, stupidity ，a poor home environment 是三個并列的詞，在詞性上應(yīng)該保持一致，所以將lazy改成laziness。