连词连词就是一种虚词， 它不能独立担任句子成分而只起连接词与词，短语与短语以及句与句得作用。连词主要可分为两类：并列连词与从属连词。一．并列连词：用来连接平行得词、词组与分句。1、and (1)连接两个并列得谓语：They sat down and talked about something、(2)连接两个并列得动词不定式，第二个不定式往往省略 to：They started to dance and sing、(3)可以与祈使句或名词词组连用表示条件（or 也有此用法）：Make up your mind, and you'll get the chance、= If you make up your mind, you'll get the chance、One more effort, and you'll succeed、= If you make one more effort, you'll succeed(4)当表示整体或者指同一人时谓语动词用单数, 当 and 连接得单数名词前分别有each，every，no 等词修饰时，谓语也用单数。The bread and butter is really delicious(美味得)、 The mother and teacher is very strict with her son、No teacher and no student is allowed to smoke in class、(5)连接两个相同意思得词，表示“渐渐”，或加强语气：Read it again and again2、both …and 两者都Both he and she play the piano、3、neither…nor 既不…也不…谓语动词采纳就近原则，与 nor 后得词保持一致。Neither you nor he is to blame、4、not only…but (also) 不但…而且…She plays not only the piano, but (also) the guitar、*not only… but also 关联两个分句时，一个分句因有否定词 not 而必须倒装。Not only does he like reading stories, but also he can even write some、5、as well as 也，与…一样The teacher, as well as the students, is interested in the activity、二．表示选择关系1) or 或者Which do you prefer, coffee or juice ? Hurry up, or you'll be late for the class、 2) either…or 或者…或者…（谓语动词采纳就近原则）Either you or I am right、3) or else/ otherwise 否则Be silent, or else you will be kicked out、I am tired, otherwise, I would play、三．表示转折或对比关系1) but 但就是 He is rich but unhappy、2) while 然而（表示对比意味） Some people love ...
