①表示强调
above all， as a matter of fact， indeed， in fact，most important， obviously， tobe sure， truly， undoubtedly， without doubt
②表示让步
admittedly， after all， all the same， although， even so， in spite of， nevertheless
③表示举例
a case in point， after all， as an proof， as an illustration， as an example， for example， for instance， in particular， just as， namely，specifically， to illustrate， todemonstrate
④表示比较
by comparison， equally， equally important， in comparison， in the same way， in the same manner， likewise， similarly
⑤表示增补
additionally， along with， also， as well as，besides， equally， even， furthermore， in addition， just as， moreover，not only…but also…， what’s more
⑥表示结论
as has been noted(mentioned， stated)， at last， finally，in a word， all in all， in brief， in conclusion， in short， in sum， in summary，to conclude， to sum up ， tosummarize.
⑦表示结果
accordingly， as a result， consequently， for this reason， hence， in this way，so， therefore， thus.
⑧表示转折
although， but，despite， except for， though， however， in spite of， instead， nevertheless， on the other hand， otherwise， rather than， though， yet.