Firstly, it develops students' communicative competence much better.

首先，它能更好地培养学生的交际能力。

The Communicative Approach is an approach to second or foreign language teaching which emphasizes that the goal of language learning is communicative competence.

交际法是一种强调语言学习目标是交际能力的第二语言或外语教学法。

The goal of sociolinguistics is to understand communicative competence— what people need to know to use the appropriate language for a given social setting.

社会语言学的目标是理解交际能力，即人们在特定的社会环境中使用合适的语言所需要的知识。