连接词根据其本身的意思和文章连接所需要的逻辑意义可分为几类：

　　a.表示开场to begin with , in the first place , in general , generally speaking

　　b.表示总结to summarize , to sum up , to conclude , in conclusion , finally

　　c.表示举例a case in point , a good illustration / example of ... is ...,

　　d.表示原因because , since , for , the cause of , the reason for , now that

　　e.表示结果as a result , as a consequence , consequently

　　f.表示比较both , like , likewise , similarly , in common , in the same way

　　g.表示对照on the contrary , on the other hand , despite , in spite of , however

　　h.表示列举first , firstly , in the first place , first of all , to begin with

　　i.表示强调especially , particularly , certainly , surely , chiefly , actually

　　j.表示让步even though , although , in spite of , however , but , yet