The study aims to investigate whether better language learners use more strategies, and what strategies Taiwanese students use in English learning and the effects of their performance. Subjects are 97 junior college students in south Taiwan, and the research instruments include junior college entrance exam scores and questionnaires dealing with their English learning strategy use. Findings show that advanced students use more strategies than their counterparts when learning English, especially memory strategy and compensation strategy. But factors related to English performance are cognitive strategy and social strategy, which are used the least. That may explain why many Taiwanese students’ English performance is still unsatisfactory, and to train students to use more strategies, in particular, cognitive strategy is recommended.