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。
Finally, other critical grammatical issues in translation such as the proper use of tenses, the passive voice and modal auxiliaries are analyzed in great detail.
另外，论文还详细研究翻译实践中诸如时态，被动语态，情态动词等重要的语法问题的处理。
Passive voice is one of the important grammatical items in English.
被动语态是一个重要的语法项目。
However, most scholars agree that their closest ancestors are the classic Greek and Roman grammatical signs that indicated important points of declamation by recording the rise and fall of the voice.
但是，大多数的学者都认为与他词义最接近的词源来自于古希腊和古罗马的语法标记，这些标记标识出演讲中需要提高或者降低说话声的位置。
The studies on the voice of the English verb have been one of the important tasks in the grammatical research.
英语动词语态的研究一直是语法研究的重要的课题之一。
We know that the English verb involves four grammatical categories, including tense, voice, mood and aspect. Aspect is the internal structure expressed by the contextualized verbs.
英语动词涉及四大语法范畴，包括时态，语态，式态，和体态。
In the light of cognition, voice is defined from the cognitive perspective as a grammatical category of the English verb which mirrors the language user's perspective on an event.
从认知的角度讲，语态是反映语言使用者观察某一事件不同视角的动词语法范畴。
In the light of cognition, voice is defined from the cognitive perspective as a grammatical category of the English verb which mirrors the language user's perspective on an event.
从认知的角度讲，语态是反映语言使用者观察某一事件不同视角的动词语法范畴。
应用推荐