1) 表示列举或次序：above all, to begin with, in the first place, for one thing; in the second place, for another; finally, last but not least

　　2) 表示递进：besides, plus, moreover, furthermore, in addition, additionally, more important

　　3) 表示举例： for instance, as an example, as an illustration

　　4) 表示对比：similarly, in the same way, equally important; on the contrary, conversely, in contrast, by contrast, on the other hand, otherwise

　　5) 表示让步：though/although(连), even though(连), in spite of(介), despite(介), it is true that(连), admittedly,

　　6) 表示转折：but, yet, however, nevertheless, instead

　　7) 表示原因：because(连), as(连), since(连), for(连), because of(介), owing to(介), due to(介), on account of(介), as a result of(介)

　　8) 表示结果：so(连), thus, consequently, hence, therefore, accordingly, as a result, as a consequence, on that account

　　9) 表示强调：in fact, actually, indeed, certainly, chiefly, especially, particularly,

　　10)表示总结：in conclusion, in short, in brief, in summary, on the whole, to sum up, to conclude