to sum up, in brief, in particular, in short, all in all, generally speaking, conclude, conclusion, in a word, so, you see ,in fact, we can say, ok, anyway, in the end
明显转折：although, though, even though, despite, in spite of, however, but, yet, while, whatever
隐含转折：not…but…, instead, in contrast (with/to sth), on the contrary, far from…, on the other hand, rather than, more…than…, otherwise, unlike, not so much…as...
特殊含义词转折：unexpected, unexpectedly, surprise, surprisingly, unfortunate, unfortunately
明显因果：because, for, as, since, in that, be due to, given that, considering (that), as long as, if, when, while, so, so that, therefore, thereby, as a result, consequently, accordingly, thus, hence, so…that…, so…as to…, then…
隐含因果：lead to, cause, reflect, result in, give rise to, derive from, result from, portray, present, bespeak, require, suggest, on the basis of, represent, be based on, for the reason that…, rely on, spring from, make, underlying…
we call it..., so called..., term be defined that is...
you should, suggest, recommend, tips, advice, had better do, how about, what about, why not, why don’t you, if I were you
especially, new theory, indeed, certainly, just remember, and again, most importantly
for example, for instance, such as, take…for example
which means…, that is to say…, mean that, be known as, for short