求翻译：Swain 认为，学习者在执行某种任务时，不仅会表明他们的假设，而且会用目的语来思考自己的输出。这种用语言来思考语言的元语言作用使学生控制或内化语言知识（Swain，1995:132）。对元语言功能的研究表明，语言表达及用语言反思对语言习得过程有着积极的作用。例如，当学习者用英文表达意思时，不得不主动地调用已学过的英语知识，斟酌语法规则的运用，琢磨词语的搭配，掂量词句使用的确切性和得体性，这就使英语知识不断得到巩固并内化，从而有效达到语言习得的目的。是什么意思？

swain learners perform some task, not only that their assumptions, and will use the target language to think about their own output. This language to think about the meta-language role of language students to control or within the knowledge of the language (swain, 1995:132). Studies have shown that

Swain believes that, and those who learn to perform a certain task, it will not only show that they have the assumption that, and that will be with the destination language to think about their own output. This language of the language to reflect on the Role language students $control or the languag

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Swain believes that learners when you perform certain tasks will not only demonstrate their assumptions, and using the target language to reflect on their own output. Such thinking in words in the meta-language role allows students control of the language or languages of knowledge (Swain,1995:132).

Swain believed, the learner when carries out some kind of task, not only can indicate their supposition, moreover can use the goal language to ponder own output.This kind with the language pondered the language the meta-language function causes the student to control or to internalize the language k