摘要：English pronunciation at segmental level plays a very significant role in learning and teaching of English *** paper aims to investigate into the most salient pronunciation problems at segmental level by college students from China's Mainland(Mandarin L1 speakers)through a close study,and it is found that the problems identified in the segmental aspects of English pronunciation are corresponded with the phonological features of the pronunciation of Chinese ***,in order to help college students improve their pronunciation and achieve the pronunciation of Standard English,this study provide some pedagogical implications and suggestions about teaching strategies aimed at the most salient problems discovered in the research findings.

摘要：Wallace Stevens is one of five greatest poets in America in 20th century. The relation between imagination and reality is a major theme of his poems. He holds the view that the mission of poets is to build a bridge linking the world of imagination and of reality with the result of deconstructing the logic of binary opposition since the time of Plato. Thirteen Ways of Looking at A Blackbird is a representative poem that expresses Wallace’s thoughts of deconstruction. This article is to probe into how the poet establishes the reality dominated by imagination and then how he deconstructs the binary opposition between imagination and reality since the time of Plato.