要想使文章有整体性、连贯性，就要学会正确使用连接词。 

1. 表示顺序增加 
     First, second, third, 
     First, then/next, after that/next, finally 
     For one thing … for another…, 
     On (the) one hand…on the other hand, 
     Besides, what's more, in addition, furthermore,
     moreover, another, also, 
     Especially, In particular, 
2. 表示时间顺序
     now, at present, recently, after, afterwards, after that, after a while, in a few days, at first, in the beginning, to begin with, later, next, finally, immediately, soon, suddenly, all of a sudden, at that moment, as soon as, the moment, form now on, from then on, at the same time, meanwhile, till, not…until, before, after, when, while, as during
3. 表示解释说明
     now, in addition, for example, for instance, in this case, moreover, furthermore, in fact, actually
4. 表示转折关系
     but, however, while, though, or, otherwise, on the contrary, on the other hand, in contrast, despite, in spite of, even though, except (for), instead of, of course, after all
5. 表示并列关系
     or, and, also, too, not only … but also, as well as, both… and, either …or, neither…nor
6. 表示因果关系
     because, because of, since, now that, as, thanks to…, due to…, therefore, as a result (of), otherwise, so…that, such…that 
7. 表示条件关系 
     as (so) long as, on condition that, if, unless 
8. 表示让步关系
     though, although, as, even if, even though, whether …or…, however, whoever, whatever, whichever, wherever, whenever, no matter how (who, what, which, where, when, whom) 
9. 表示举例
     for example, for instance, such as…, take… for example 
10. 表示比较
     be similar to, similarly, the same as, in contrast, compared with (to)…just like, just as, 
11. 表示目的
     for this reason,, for this purpose, so that, in order to, so as to
12. 表示强调 
     in deed, in fact, surely, certainly, no doubt, without any doubt, truly, obviously, above all, 
13. 表示概括归纳 
     in a word, in short, in brief, on the whole, generally speaking, in my opinion, as far 
as I know, As we all know, as has been stated, as I have shown, finally, at last, in summary, in conclusion