The learners differ with each other in first language aptitude,motivation,character and even age,which will directly or indirectly influence the final result of his second language acquisition.

• 调查研究结果显示:学习者的母语能力、学习动机、性格特点、年龄等方面的差别都会直接或间接地影响他的二语习得过程及效果。