4)表让步：
still nevertheless concession granted naturally
in spite of all the same of course despite
even so after all
5)表递近：
furthermore moreover likewise what is more
besides also not only……but also……
too in addtion
6)表举例：
for example for instance for one thing that is
to illustrate as an illustration a case in point
7)表解释：
as a matter of fact frankly speaking in this case namely
in other words
8)表总结：
in summary in a word thus as has been said
in brief in conclusion altogether in other words
to conclude in fact finally in simpler terms
indeed in short in particular that is
in other words of course on the whole to put it differently
namely in all therefore to summarize
常用的名词：
abolishment 废除
absurdity 荒唐;谬论
abuse 滥用
achievement 成绩
acqaintance 熟人
adaptation 改写;适应