Position preposition is a hard nut of English teaching.

方位介词是英语教学中常碰到的一个难题；

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This dissertation brought forth the new classification of modern Chinese preposition from the perspective of kazak-Chinese teaching practice.

因此，本文立足于对哈汉语教学的实际，提出现代汉语介词的新分类法。

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For a long time marginal preposition in English has been receiving little attention because of their marginal nature, but it is a difficult point in language teaching.

长期以来，英语中的边缘介词，由于其边缘性，未引起语言研究者的充分重视，但却是语言教学中的一个难点。

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