本文中起承上启下的词语有两种,一种是转换词语(transitional words or phrases),另一种是起转换作用的其他连接手段(linking devices)。前者依次有:first, though, so, in particular, and, because, however, besides, as a result, both…and, consequently, and, finally.后者依次是:he, he, his, his, he, these, them, he, those, his, he, these, his. 本段中共有词汇105个,所使用的转换词语及其他连接用语共26个词,约占该段总词汇量的四分之一。由此可见,掌握好transitions不仅对行文的流(smoothness)有益,而且对于学生在半个小时内写120个词也是不无好处的。一个段落里如果没有transitions也就很难有coherence了.我们看下面一个例子:Speaking and writing are different in many ways. Speech depends on sounds. Writing uses written symbols. Speech developed about 500 000 en211ago. Written language is arecent development. It was invented only about six thousand years ago. Speech is usually informal. The word choice of writing is often relatively formal. Pronunciation and accent often tell where the speaker is from. Pronunciation and accent are ignored in writing. A standard diction and spelling system prevails in the written language of most countries. Speech relies on gesture, loudnes