1. Addition 表并列/补充/重复/强调/递进
and，also，besides，too，again，in particular，after all，especially，in addition（to），similarly，likewise，as well as，apart from, except, furthermore，moreover，and then，not only ... but also…，even，besides this/that, what’s more ,in the same way, accordingly, equally important, not only… but(also)
2. Sequence 表顺序
first/initially，second , third,
in the first place. firstly
in the second place, secondly
finally/lastly, to begin with，furthermore ,then/next，
finally; earlier/later，after this/that, following this/that，afterwards,
On the one hand,…. On the other hand,
in the long run最终
at long last终于, at length终于…
3. Consequence 表结果
as a result，thus，so，therefore，consequently，it follows that，thereby，eventually，then，in that case，admittedly, hence, for this reason, leads to, cause
4. Contrast 表比较与对照/转折与让步
unlike; on the contrary; by contrast; by comparison; compared with, like…; as…as…; in contrast; conversely; oppositely; ….than….
but, however，yet, though，although, even though, even as, anyhow, anyway, in any case, on the other hand，despite，in spite of，otherwise，instead of，rather，even so,即使如此,even if（though）,as for, as of
whereas，nevertheless, nonetheless，alternatively, still…
5. Certainty 表确定
surely，naturally，certainly，obviously，certainly，plainly， undoubtedly, no doubt，doubtlessly，of course, in fact…
6. Condition 表条件
if，unless，whether，provided that，in case, for，so that，whether，depending on,on the ground of: 以……为借口， in the light of the按……考虑,
in the shadow of adv. 在...附近,other than除了……，so far, as yet, thus far
As yet迄今（未）
7. Definition 表定义
…is…，…refers to…，…means…，that is， namely, that is to say; …consists of…
8. Summary 表总结
in conclusion，in summary，in brief，in short, in a word, in all, to sum up，to conclude， to put it short, thus, lastly，finally，to recapitulate…
9. Example 表举例
for example，for instance，a case in point is…, one example， that is, just as，especially, specifically, in particular，particularly, such as，namely, likely, to illustrate, that is to say, … a (good) case in point…
10. Reason 表原因
since，for, as，so，because (of)，due to，owing to，thanks to, the reason why…is that…，for the reason that, in other words, leads to，cause, for this/that reason，therefore，thus，so that，as a result,
11. Time 表时间
when，since，ever since，before，after that，now，next，later，then, as，not…until…，meanwhile，at the moment， whenever，as soon as，just as, …
12. Space 表空间
beside，between，beyond，across，over，at，into，outside, …
