连词常考到的有以下几个词组：
both ...and：表示"两者都...".注意：当both...and 连接主语时，后面动词一般要用复数。如：Both Lily and Lucy are right.
not only... but also: "不仅...而且..."。注意：后面动词采用就近原则,与but also后的词保持一致。
如：Not only my parents but also my brother likes the cat.
either...or:"或者...或者..."。注意谓语动词采用就近原则。如：Either you or I am wrong.
neither...nor："既不...也不..." 是 "either...or" 的否定形式。谓语动词采用就近原则，与nor后的词保持一致。
如：Neither you nor he is right.
or的用法： 意思为"否则"。如：I must work hard, or Ill fail in the exam.(我必须好好学习，否则我会考不及格了。)
[中考英语语法之连词用法]