单音节重叠副词可分为三类。

Such reduplicated adverbs fall into three types.

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英语中形似介词的副词小品词是一类比较特殊的词。

Preposition - like adverbial particles are a special class of words in English.

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同时，断定类语气副词内部的语义和用法也是有差异的。

Meanwhile, there is also difference between semantic and its usage in the internal of alleged modal adverb.

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