连词英语有并列连词和从属连词。
英文连接词有70个左右，如also， and等。是连接英文单词的词，英语有486,000个左右的单词，它们总是非常高频率的出现在各类文章、对话、电邮等英语实际沟通中。
并列连词用于连接并列的单词、短语、从句或句子，如and, but, or, for等;
从属连词主要引出名词性从句(主语从句、宾语从句、表语从句等)和状语从句(时间状语从句、条件状语从句、目的状语从句等)，引出名词性从句的连词如that,whether等，引出状语从句的连词如when，because，since, if等。
连接词：
1、表选择关系或对等关系的连接词: either…or…, neither……nor, or,as wellas…",and, both-…and….等。
2、表因果关系或对等关系的连接词: therefore,so,as a result,astheresult of …, because of，due to…, owing to, thanks to等。
3、表时间顺序的连接词: the moment,assoon as,at first, then,later， meanwhyle, at the beginning, in the end,before long,forthe first (second…) time, the minute等。
4、表转折关系的连接词: yet, and yet, but , while,on the contrary,onthe other hand, however,at the same time（然而）等.
5、表解释说明的连接词: that is, that is to say, in other words,such as, for instance, and so on,etc. and the like等.
6、表递进关系的连接词: not only…but (also)，what,s more, what'sworse， besides,in addition, worse still, moreover, above all等.