常见的表示方向的关系有如下几大类：
表示前后方向相反：
转折关系： but/however/yet, on the other hand, despite
对比关系： more/less…than…, unlike
表示前后方向相同：
并列关系： A and B, not…nor…, first, second, third
递进关系： moreover, in addition/additionally/besides, not only…but also…
那么请大家来做一个练习：
Managerial and executive progress made by women is confirmed by the annual survey of boards of directors carried out by Korn /Ferry /Carre /Orban International. This year the survey shows a doubling of the number of women serving as non-executive directors compared with the previous year. However, progress remains painfully slow and there were still only 18 posts filled by women out of a total of 354 non-executive positions surveyed. Hilary Sears, a partner with Korn /Ferry, said, ‘Women have raised the level of grades we are employed in but we have still not broken through barriers to the top.’
上面一段话，完全可以浓缩成以下内容：
… progress(+) … doubling of the number(+) … However … painfully slow(-) … raised the level of grades(+) … but … not broken through(-) …
也就是说，从两次出现“however/but”这种转折关系词来看，这一段话一直采用的是一种“对比”结构，分别论述了妇女找工作的好坏两方面。怎么样，你能否仅仅用30秒钟完成阅读?
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