在第二语言习得的研究领域里，语言学习中的四项基本技能常被论及。

In the area of second language acquisition (SLA), the four basic skills in second language learning and teaching have been discussed and explored by many linguists.

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二语习得领域进行的大量实证性研究表明策略培训在学习者有效获取各项语言技能方面起到了积极作用。

A vast number of empirical researches in SLA indicate that strategy training plays a positive role in the acquisition of language skills.

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