9表示条件和假设的词语
if,if only,unless,assuming that,provided that,in case,supposing,given...
10表示赞成的词语
there is no doubt that,admittedly,doubtless,undoubtedly,it is certain that,certainly,surely,naturally,stand by,in favour of,i grant you that.
11表示举例的词语
as follows,a case in point,for instance,for example,including,to illustrate,namely,such as,...included,incorporate.
12表示总结的词语
to summarize,to sum up,draw a conclusion that,in summary,in conclusion,thus,therefore,all in all,in brief,briefly,on the whole,in all,in short,in a word,in terms,as i have said,as has been noted.