Abstract
This study analyses oral book-reports made by learners of Japanese who reside in Japan and study in an undergraduate level preparatory course. The purpose of this study is to unveil the factors which make their oral book-reports awkward or difficult to understand. Through detailed analysis of the learners' discourse of their oral book-reports, it was revealed that there are 6 factors; these include both ones which are related to the learners' choice of essay theme and text comprehension, and ones which are related to their speech production.