顺序
first, second, third, then, finally, to begin with, first of all, in the first place, last, next, above all, last but not the least, first and most important.
可能
presumably, probably, perhaps.
解释
in other words, in fact, as a matter of fact, that is, namely, in simpler terms.
递进
What is more, in addition, and, besides, also, furthermore, too, moreover, furthermore, as well as, additionally, again.
让步although, after all, in spite of…, despite, even if, even though, though, admittedly, whatever may happen.
转折
however, rather than, instead of, but, yet, on theother hand, unfortunately. whereas