Sufficient research on the case study on modal verbs will help discovery the inner principle of the usage of this verb category.

对情态动词进行充分的个案研究，有助于该类词的内在规律的揭示。

youdao

Therefore, it is not only possible to query for individual categories (noun, verb), but also category groups (word, phrase).

因此，不仅可以查询单个的类别(noun, verb)，还可以查询类别组(word, phrase)。

youdao

Verb is a linguistic category which indicates various act and activity. Verb from semantic perspective in practice represents a proposition or a event.

动词是反映客观世界各种各样动作、行为等的语言范畴，就语义性质而言，它在语言中实际代表的是一个命题、事件。

youdao