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1. 并列关系
and, furthermore, more than that, also, likewise, moreover, in addition, what is more, for instance, for example
2. 转折关系
although, however, on the contrary, but, in spite of, nevertheless, yet, otherwise, despite
3. 顺序关系
first, second, third, and so on, then, after, before, next
4. 因果关系
as a result, for, thus, because, for this reason, so, therefore, as, since, consequently, on account of
5. 归纳关系
as a result, finally, therefore, accordingly, in short, thus, consequently, in conclusion, so, in brief, in a word
6.几个用得比较多的句子：
As far as I am concerned, the advantages of ... outweigh its disadvantages.
Nevertheless, the disadvantages of ... is undeniable.
To sum up/In general/On the whole/In brief/In short/In a word, it is true that ... bring about both positive and negative results. But we can try our best to reduce the negative influence to the least extent.
Obviously, in every aspect, ...
This diagram unfolds a clear comparison ...
As to the other three, though the growth rates were not so high, they were indeed remarkable and impressive。
1. 给出一个事实，要求解释它的原因。
陈述这个事实 As is know by all， ……
Among countless factors which contribute to XXX， there exist three most conspicuous ones：
One of the primary causes is that…
XXX also results from…
… is responsible for xxx， as well.
To put all into a nutshell， I draw the conclusion that A，B and C are three main contributors to XXX
2. What should we do? How do something influence our lives? what are the characters of something.
背景描述
There are numerous approaches to solving…/impacts on sth. /characteristics of… ， and I would explore the most conspicuous ones there.
One of the primary method， to my mind， is that…
one of the primary impact， to my mind， is that…
one of the primary characteristic， to my mind， is that…
a more subtle point which we must consider is that…
In addition/ furthermore ……
In conclusion， Taking into account of all these methods/ affects / aspects， we may reach the conclusion that……
