Abstract：The flourishing researches about the public speaking, especially political speech, emerge with vitality and diversity. This study, targeting at a rarely touched upon topic, attempts to explore speaker’s ethos and explain how the speaker successfully achieves the communicative purpose at the podium, taking “Speech on Hitler’s Invasion of the U.S.S.R” by Winston S. Churchill as an example. 

　　　The study first adopted qualitative research to analyze public speaking skills of “Speech on Hitler’s Invasion of the U.S.S.R” in light of identification theory of Kenneth Burke. Then, it probed into how Churchill constructs the ideal ethos, which propelled discourse power. Through the research, it’s found out that this speech is characterized by flowing rhythm, exquisite diction and rich emotions. His language style, which is calm, confident and generous, evokes resonance from the audience--- the common hatred for fascism. This study aims to help learners to better appreciate public speaking skills and provides a new method to shape their ethos in their own practice.

Key Words: public speaking; Winston S. Churchill; identification; ethos

中文摘要：公共演讲，尤其是政治演讲受到了国内外学者的重视，很多学者已对公共演讲进行了广泛研究。然而，这些研究对象都过于笼统，本次研究试图从新的角度，以丘吉尔《关于希特勒入侵苏联演讲》为例，探讨演讲者的修辞人格，解释演讲者是如何在演讲台上成功地达到交际目的的。

　　　本次研究首先通过定性分析的手段，从肯尼斯•伯克的“认同说”角度分析《关于希特勒入侵苏联演讲》的演讲技巧；然后深入分析丘吉尔在演讲中如何投射出最佳的人格以促进话语效果。通过研究发现，丘吉尔这篇演讲稿有着流畅的节奏，精美的措辞，充沛的感情，他从容自信的气魄，稳重大度的风采，唤起了听众的心理认同——对德国法西斯的仇恨。本次研究能让公众演讲者更好地欣赏与学习其演讲技巧，也为塑造修辞人格提供一种新方法。

关键词：公众演讲；丘吉尔；认同说；修辞人格