一.　Addition　此外

in　addition, and，similarly， as　well　as，besides，furthermore，also，moreover，too, not　only　...　but，even，besides　this/that

二.　Sequence　顺序

first, initially，second　etc.，to　be?gin　with，then，next，earlier/later，following　this/that，afterwards

三.　Consequence　结果

as　a　result, thus，so，therefore，consequently，it　follows　that，thereby，eventually，to　that　case，admittedly

四.　Contrast对比

however, on　the　other　hand，

despite，in　spite　of，though，although，but，on　the　contrary

otherwise, yet，instead　of，rather，whereas，　nonetheless compared　with，in　contrast

五.　Certainty　确定

obviously, certainly，plainly，of　course，undoubtedly

六.　Condition　条件

if, unless，whether，provided　that，for，so　that，whether，depending　on

七.　Time　时间

before, since，as，until，meanwhile，at　the　moment，when，whenever，as　soon　as，just　as