Abstract：We did a research on oral English teaching strategy in large-size class under the multimedia environment. Through qualitative and quantitative analysis of interview and questionnaire data, we find that large-size class teaching can promote students' communication and study but holds back teacherstudent interaction; group discussion and learning strategies with the aid of multimedia make significant effects; teachers can adopt such effective teaching strategies as preparation strategy, introduction strategy, classroom interaction strategy, situation-creating strategy, and strategy of fostering oral English autonomous learning. This study may shed some light on oral English teaching in terms of creating favorable language input environment, attaching great importance to comprehensibility of language input, implementing effective classroom interaction strategy, fostering students' autonomous learning strategy, paying attention to cultural introduction of oral teaching and so forth.

Keyword：multimedia;large-size English class;college English;oral English teaching strategy;