学习者是在参与活动与完成任务的过程中，通过交际性和有目的的交互活动掌握语言的。
Students will learn the language in the process of finishing a task and in the interaction of communicating with others.
根据语言学习的交际性原则，有意义的练习活动应具备以下特征：（1）有语言使用的情景；
According to the principle of communicative language learning, meaningful practice activities should have the following characteristics: (1) The use of language scenarios;
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