???［误］He doesn't like Beijing opera. I don't like too.［正］He doesn't like Beijing opera, I don't like either.［析］either作为“也”讲时，要用于否定句中，而too则用于肯定句中。???［误］We like both this little boy.［正］We both like this little boy.［析］both作同位语时，它在句中的位置有：在be动词之后，如：We are both students.在实意动词之前，如：The parents both want to go to the cinema.用于第一助动词之后，如：We have both read these English novels.使用时要注意以下句子的实际含意：Both of us are not right.应译为：我们俩不都对。Neither of us is right.才应译为：我俩都不对。又如：I can't give you both of the books.意为：两本书我不能全给你，而I can't give you either of the books.才为：两本书我全不能给你。???［误］We each has a ticket for the concert.［正］We each have a ticket for the concert.［析］each作句子主语时其谓语动词要用单数形式，如：Each of us wants to learn English well，但each作同位语时，则应以原名词的数为准。???［误］Every of us has to pass the exam.［正］Each of us has to pass the exam.［析］every只可作形容词，不可作代词，而each既可作形容词，又可作代词，在作形容词时each侧重强调个体，而every 则侧重于全体。