文体分析研究在20世纪60年代末发展到了顶峰，越来越多文体学分支相继涌现并取得了显著的研究成果。作为快速发展的文体学分支之一，前景化理论也吸引了诸多学者借此针对各种各样的语言变体开展文体分析相关研究。然而，不带任何商业目的的公益广告却鲜少得到相关学者的青睐，从前景化角度对其语言进行文体分析的研究也相对有限。因此，在如今抗击新冠疫情的大背景下，本研究从网络上选取一定数量有关抗击新冠疫情的英文公益广告作为研究对象，并从前景化角度在不同层面对其进行详细的文体分析。结果显示，抗击新冠疫情英文公益广告中的前景化特征主要在语相层、语音层、词汇语法层和语义层体现，而这些前景化特征通过各自不同的方式起到了吸引读者注意力和突出号召抗击新冠疫情的相关信息的效果。本次研究希望帮助读者能更好地从前景化的角度理解和欣赏英文公益广告的文体特征，英文公益广告的设计者也能从中获得灵感和设计技巧以创造出更好的作品。同时，本研究希望能够为未来相关研究提供一点帮助，也能为丰富文体分析领域相关研究作出微薄贡献。

Stylistics analysis has reached its peak at the end of the 1960s, and there are more and more branches of stylistic studies springing up and achieving significant results. Style as foregrounding is also a burgeoning subcategory of stylistics, and there are a lot of researchers successfully carrying out stylistic analysis on diverse language varieties in terms of it. However, public service advertisement, as a kind of advertisement without commercial intentions, has attracted little attention in the studies of stylistic analysis from the perspective of foregrounding. Therefore, in the background of fighting with COVID-19 nowadays, this thesis chooses some English public service advertisements on combating COVID-19 from Internet as subjects and gives a detailed stylistic analysis at different levels from the perspective of foregrounding. As a result, it is found that foregrounding features of English public service advertisement on combating COVID-19 are realized at graphological, phonological, lexicogrammatical and semantic levels, and they serve the functions of attracting people’s attention and emphasizing the key formation of calling on fighting with COVID-19 in different ways. It is expected that through this study readers could better understand and appreciate the stylistic features of English public service advertisement from foregrounding, and designers could also acquire inspirations and skills for later creation. Besides, it is also hoped that this study could provide help for future related studies, and also make contribution to the richness of stylistic analysis.