并列关系： and; also;too;as well as;either...，or...;both...nd...
递进关系： furthermore;moreover;further;In this way ;still; not only...but also...; not...but...; in addition (to);additionally, much more interesting, more specifically, next, besides; as far as... is concerned; moreover;in other words;along this line of consideration;on the one hand...，on the other hand...; even; as a poplar saying goes...;in order to do it...; meanwhile; at the same time; accordingly; In the first place...，in the second place...;equally important; of even greater appeal.
