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.