1、both…and…的用法用于连接两个表示并列关系的名词或代词.如：Both New York and London have traffic problems.纽约和伦敦都存在交通问题.The secretary both speaks and writes Spanish.这位秘书不但能讲而且能...
either or 要么……要么…… Either you choose a red book or choose a yellow one. neither nor 既不是……也不是…… For this question,she neither confirmed nor denied it. not only but also 不仅，而且 She is not only beautiful but also diligent.
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