1、表选择关系或对等关系的连接词:either?or?,neither?nor,or,aswellas?,and,both?and?。2、表因果关系或对等关系的连接词:therefore,so,asaresult,astheresultof?,becauseof,dueto?,owingto,thanksto等。3、表时间顺序的连接词:themoment,assoonas,atfirst,then,later,meanwhile,atthebeginning,intheend,beforelong,forthefirst(second?)time,theminute等。4、表转折关系的连接词:yet,andyet,but,while,onthecontrary,ontheotherhand,however,atthesametime(然而)等。5、表解释说明的连接词:thatis,thatistosay,inotherwords,suchas,forinstance,andsoon,等。6、表递进关系的连接词:notonly?but(also),what,smore,what'sworse,besides,inaddition,worsestill,moreover,aboveall等。7、表示总结的连接词:inaword,onthewhole,inshort,briefly,inbrief,tosumup,inall等。