then, first, at once, next, after that, previously(先前), while, when, the following day, etc.
1) 罗列(listing): firstly, in the first place, secondly, thirdly, last/finally, etc.
2) 阐述，举例(illustrating): for example/ for instance, to illustrate, an example/ instance of this is, let's take…., take… for example, etc.
3) 重申，进一步说明(re-stating): in other words, that is to say, to put it another way, let me put it this way, or rather, namely, etc.
4) 谈及，提及(referring): in this respect, in that connection, as we said, apart from this, etc.
5) 返回之前话题(resuming): to resume, to return to the previous point, getting back to the argument, etc.
to sum up, in short, it amounts to this, what i have been saying is this, etc.
7) 强调(emphasizing): it is worth noting, i would like to direct your attention to, let us consider, we must now turn to, i shall begin by, etc.
1) 进一步论证观点(introducing further evidence): moreover, furthermore, in addition, what's more, as well, etc.
2) 引入原因(cause): because (of), since, owing to, on account of, due to, as a result of, etc.
3) 表示结果(effect): as a result, hence, therefore, consequently, thus, so, etc.
4) 表示转折(contrasting): in / by contrast, on the contrary, on the other hand, nevertheless, whereas, while, yet, however, but, etc.
5) 表示对比(comparison): in like manner, likewise, in the same way, similarly, in comparison with, etc.
6) 表示目的(purpose): to this end, for this purpose, with this in mind, in order to, so that, etc.
7) 二次解释(intensification): indeed, in fact, in any event / case, at no time, to tell the truth, etc