选词、变异及前景化是文体学研究的三大要素。是语言的艺术表现形式的重要手段。通过列举英语使用中的具体应用实例,说明变异与前景化的产生原因和艺术魅力:前景化蕴藏着作者的动机,是通过变异手段而获取的。任何变异的应用,目的旨在于打破常规语言的规律从而刺激读者的兴趣达到前景化的目的。只有反映作者动机,同时又能被读者解读的变异才具有艺术价值。 The choice of words, variation and foregrounding are the three major elements of stylistic research. Is an important means of artistic expression of language. By enumerating specific examples in the use of English, this paper illustrates the causes of variation and foregrounding and the artistic charm: Foreground contains the motivation of the author and is obtained by means of mutation. The purpose of any variation is to break the rules of conventional language and stimulate readers’ interest to achieve the purpose of foregrounding. Only the variation that reflects the author’s motivation and can be interpreted by the reader has artistic value.