本文来自雅思作文网liuxue86.com《善用衔接词加强雅思作文逻辑性》。 1、层次词汇/并列关系词汇（这组词汇用在小作文时主要是在流程里可能用到, 而大作文里则用的更为常见）
首先,其次, 然后, 最后: firstly, secondly, thirdly; in the first place, in the second place, in the final place; first and foremost, moreover, additionally, furthermore, eventually, last but by no means least; to start with, to end with, on top of that, in addition to that, added to that, besides, finally, lastly.
However, otherwise, nevertheless, instead, notwithstanding
In contrast, by contrast, on the contrary, despite the fact that, in spite of
But, yet, although, even though, though
Of course, indeed, most important, certainly, in fact, obviously, clearly, surely, in particular, in this case, actually.
In comparison, likewise, similarly, equally, in the same way, identically
Furthermore, moreover, besides, in addition, additionally, also.
原因 because of, owing to, due to, thanks to.（介词类）
Because, since, for, as（连词类）
结果 therefore, thus, hence, consequently, accordingly（副此类）
As a result, as a consequence（介词类）
So（连词 不够正式 少用为好）