(原因)列举：

　　1)first, second, third, last but not least

　　2)firstly, secondly, thirdly, finally

　　4)in the first place, in the second place, in the third place, lastly

　　5)to begin with, then, furthermore, finally(强烈推荐)

　　6)to start with, next, in addition, finally(强烈推荐)

　　7)first and foremost, besides, last but not least(强烈推荐)

　　8)most important of all, moreover, finally

　　9)on one hand, on the other hand(适用于两点的情况)

　　10)for one thing, for another thing(适用于两点的情况)

　　补充：

　　besides, furthermore, likewise, moreover

　　转折：

　　despite that, still, however, nevertheless, in spite of, despite, notwithstanding

　　原因：

　　then, therefore, consequently, accordingly, hence, as a result, for this reason, so that

　　举例：

　　To take … as an example, One example is…, Another example is…, for example

　　比较：

　　相似的比较：

　　in comparison, likewise, similarly, in the same manner

　　相反的比较：

　　on the other hand, conversely, whereas, while, instead, nevertheless, in contrast, on the contrary, compared with …, …

　　换言之：

　　in more difficult language, in simpler words, put it more simply

　　开头：

　　1.表示开头的句型

　　With the development of traffic tools, the communication between us becomes more and more frequent. No matter where your friends and relatives live, it is always very easy to pay a visit to them if you would like. Therefore, when you meet an old friend on a strange street, you may exclaim: " Oh, what a small world."

　　With the help of the computer, this project was completed much earlier than planned.

　　With a will of iron and a heart of love, Mother Teresa served the dying and desperate in India and around the world.

　　正反观点对比：