减少不必要的介词短语
有时介词短语并不是真正必要的，尤其是当你使用它们（而不是撇号 + s）来表示对某个对象的所有权时。
另外，尽量避免在单个句子中使用太多介词短语，因为它们会掩盖句子的主语和动作。
Examples
Unnecessary phrase: The opinion of the manager
Correction: The manager’s opinionUnnecessary phrase: The obvious effect of such a range of reference is to assure the audience of the author’s range of learning and intellect.
Correction: The wide-ranging references in this talk assure the audience that the author is intelligent and well-read.Unnecessary phrase: It is a matter of the gravest possible importance to the health of anyone with a history of a problem with disease of the heart that he or she should avoid the sort of foods with a high percentage of saturated fats.
Correction: Anyone with a history of heart disease should avoid saturated fats.
(Heffernan and Lincoln, 1996, p. 55)
