以上来源于: WordNet
Ancient Chinese was extremely succinct, having no verb tense or other complex grammatical construction.
古代汉语是尤其简洁的，没有动词语态和其他的复杂语法结构。
At the early stage of the study of EST, people mainly focus on superficial language phenomena such as word formation, grammatical structure, tense, voice, etc.
科技英语的研究初期，人们主要注意的是诸如词汇构成、语法结构、时态、语态等表层语言现象。
The second part is a review of the studies on tense as a grammatical category.
第二部分是概述时态作为语法范畴的研究。
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