3、表明作者的观点、态度

1)Introducing( or emphasizing) further

evidence: moreover, furthermore, in addition,

what’s more, as well, etc。

2)Cause: because (of)， since, owing to, on

account of, due to, as a result of, etc。

3)Effect: as a result, hence, therefore,

consequently, thus, so, etc。

4)Contrasting: in / by contrast, on the

contrary, on the other hand, nevertheless,

whereas, while, yet, however, but, etc。

5)Comparison: in like manner, likewise, in the

same way, similarly, in comparison with, etc。

6)Purpose: to this end, for this purpose, with

this in mind, in order to, so that, etc。

7)Intensification: indeed, in fact, in any

event / case, at no time, to tell the truth, etc