信号词1、表示顺承和递进关系

　　例词：also, apart from, besides, moreover, furthermore

　　例句：The Victorian style of heavily ornamented interiors prevailed inmiddle-class homes in England and the United States during the latter half ofthe 19th century. Moreover, in both countries, techniques of mass productionpromoted the use of reproductions in many different styles。

　　信号词2、表示对比与转折关系

　　例词：but, however, though, although, yet, nevertheless, on the other hand

　　例句：Education is the passport to modern life, and a pre-condition ofnational prosperity. But more than a quarter of the world‘s adultscannot read or write, and more than 100 million young children are deprived ofeven a primary school education。

　　信号词3、表示相似关系

　　例词：like, as, likewise, similar to, in the same way

　　例句：Like other ways of generating electricity, wind power does not leavethe environment entirely unharmed。

　　信号词4、表示时间先后关系

　　例词：now, later, before, after, since, when, first, second, next, atlast, eventually, finally

　　例句：As the volunteers began to fall asleep, the electrodes detected theslow rolling eye movements which could be seen easily through their eyelids. Soonafter, the volunteers fell deeper into sleep and their eyes became still。

　　信号词5、表示排列次序

　　例词：another, the second…even more…the most… the best… the least…

　　例句：This situation is compounded by yet another factor。

　　信号词6、表示因果关系

　　例词：as, because, for, since, owing to, thanks to, which in turn, leadto, as a result, result in, consequently, therefore, thus, hence

　　例句：As they became independent, most developing countriesenthusiastically embraced education。

　　信号词7、表示举例或说明关系

　　例词：that is to say, in other words, i. E. Such as, for example, forinstance

　　例句：More recent developments such as those seen on California wind farmshave dramatically changed the economic picture for wind energy。