从上述结构我们看出作者的观点是支持提供高科技媒体，但这个论证过程非常全面，它先在论证的第一段就退一步承认其缺点，然后再就这一点进行反驳，这个段落就是让步段，参考之前提供句型，得出这一段：

Opponents of a high-tech library would argue that multimedia facilities are expensive. This may be true to some extent, because a DVD player is often more expensive than a bookshelf. However, with immense storage capacity, these new high-tech media can actually save the most valuable resource-space.

让步段还可以运用到讨论类另一种结构中，笔者谓之双边倾向论证。我们通过一个具体的实例来解释这种论证结构以及让步在其中的用法。

There are social, medical and technical problems associated with the use of mobile phones. What forms do they take? Do you agree that the problems outweigh the benefits of mobile phones?

老师建议此题一定要认真审题，因为这个问题模式对文章的结构有着直接的影响。它有两问，第一问要回答手机的三个方面的问题，第二问优缺点讨论，结合这两问，得出文章结构如下：

Introduction: State my opinion

The problems of mobile phones far exceed the merits.

Body: Ph 1 the benefits brought about by mobiles (Making concession)

Convenient, functional

Ph 2 the social, medial and technical problems of mobile phones

Conclusion: Restate my opinion

Although mobile phones have some benefits, the negative influences should not be overlooked.

看完结构，不难理解双边倾向的结构即两个方面优点和缺点都提及，作者的观点是倾向其中一方的，那么不同意的那一方的论证段就可以理解为让步段。结合句式，我们可以写一下让步段的topic sentence:

It is undeniable that mobile phones have facilitated our lives in many different ways.

接着可以列举手机使用的几个具体的优点。这种让步和单边论证让步的区别是它可以不用直接在这个段落后面反驳。

III  结语

让步段在论证过程中有着相当广泛的实战意义，它可以帮助考生扩展文章的字数，达到要求，此外，它还能使得论证过程更加全面。老师推荐学生准确使用此种论证方法，希望对写作取得高分有切实的帮助。