易混詞主要考查近義詞混用和形近詞混淆。英語詞匯中有很多詞在拼寫上、語義上很相似，如assure / ensure,　rise / arise /raise,　effect / affect, adopt / adapt，likely / probable，accept / receive，like / as，cost / spend等, 但是它們的用法卻迥然不同。這些易混淆的詞構(gòu)成六級改錯的一個重要錯誤類型。
　　考點例析：
　　例1： His persistence was awarded when the car finally started. ________
　　解析：句中“award”是“頒發(fā)，授予(獎賞)”之義，而文中想要表達的意思是“汽車終于啟動了，那就是對他堅持不懈精神的回報�！睉�(yīng)把award改成reward。
　　例2：A diversity committee composed of reporters, editors, and
　　photographers meets regularly to value the Seattle Times’ S5.________
　　content and to educate the rest of the newsroom staff about
　　diversity issues.
　　解析：動詞value有兩個含義：第一，to think that someone or something is important，比如I value our friendship。第二，to decide how much money something is worth，比如we decide to get this house valued。不論哪個含義，用于此都不適合。從文中可以推測這些人碰頭人是為了judge how good, useful, or successful the paper is，因此要用evaluate。
　　例3：Leprosy is caused by bacteria spread through liquid from the nose
　　and mouth. The disease mainly effects the skin and nerves. S4.________
　　解析：effect 作動詞時意為“產(chǎn)生，招致（某種結(jié)果）；實現(xiàn)，完成”，但此處需要表示“影響”，故將effects -%26gt; affects.