任务式互动与二语语法习得关系的元分析研究
唐建敏,张宗莹,曹慧玲

A Meta-analysis of the Relationship between Task-based Interaction and L2 Grammar Acquisition
Jianmin Tang,Zongying Zhang,Huiling Cao
图5 二语环境和外语环境测试结果的平均效应量