1.相同信息的信号词：and, furthermore, more, than, that, also, likewise, moreover, in addition, what is more, for instance, for example例：There has been an upsurge of interest in chamber music. Likewise opera is receiving a boost from increased record sales.
2.思路转折的信号词：although, however, on the contrary, but, in spite of, otherwise, despite, nevertheless, yet
例：I’d like to go but I’m too busy.
3、因果关系的信号词：for, thus, because, for this reason, so, therefore, as, since, consequently
例：As a result of the pilots’ strike, all flights have had to be cancelled.
All flights have had to be cancelled as a result of the pilots’ strike.
4、顺序的信号词：first, second, third, and so on, then, after, before, next, last, afterward, finally
例：Internet speeds communication between companies, among co-workers through video-conferences, and among other individuals. First, media companies use the Internet for online news, or to broadcast audio and video, including live radio and television programs, while individuals use the Internet for communication, entertainment, finding information, buying and selling goods and services. Second, the notion of distance disappears thanks to the Internet. People also enjoy instant messaging to exchange text messages or pictures in real time, with real-time video and sound. Finally, scientists and scholars use the Internet to perform research, distribute lecture notes or course materials to students, they communicate with colleagues, and can also publish papers and articles.
5、结论/总结的信号词：as a result, finally, therefore, accordingly, in short, thus, consequently, in conclusion, so, in brief, in a word
例：In conclusion, I would like to say how much I have enjoyed myself today.