英语政治演讲语篇中篇尾自问自答句的组织功能

自问自答句是讲话人提出问题但不需要听话人回答，而由讲话人自己提供答语的问句。根据讲话人提供答语的方式，这种问句可以分为提供显性答语的自问自答句（简称显性答语句）和提供隐性答语的自问自答句（简称隐性答语句）。隐性答语句在英语政治演讲语篇中的存在是自身特点与这类语篇的特点相互作用，进而相互适应的结果。它在语篇中位置比较灵活，甚至可以出现在这类语篇的篇尾。作为一种非常规的用法，篇尾自问自答句具有独特的语篇组织功能:当它的隐含答语可以从上文语篇推知时，它具有总结-延续功能；当它的隐含答语可以根据常识推知时，则具有总结-突显功能。 

The Textual Organizing Functions of Text-final Answer-providing Questions in English Political Speeches

Answer-providing Question is a kind of question with its answer offered by the speaker,not the listener. According to the way the speaker offers the answer, it can be further divided into two subtypes:the explicit-answer-providing question ( EAP question) and the implicit-answer-providing question ( IAP question) . The existence of IAP question in English public political speeches is the result of mutual choice and interaction between IAP question and the text type, jointly decided by their respec-tive characteristics. IAP question can appear in different parts of the text, even appear in the conclusion part. When it is at the end of an English public political speech, as a kind of unconventional usage, Answer-providing Question has the unique textual organizing functions:when its implied answer can be inferred from previous text, it mainly has the summarizing-continuing function;when its implied answer can be inferred by common sense, it mainly has the summarizing-focusing function.