名词
中文翻译：Unknown
同义词：
['grammar', 'grammar rules']
例句：
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1. Grammar is the study of language structure.
语法是研究语言结构。
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2. The teacher explained the grammar rules for the lesson.
老师解释了这节课的语法规则。
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3. Grammar plays a crucial role in writing and speaking.
语法在写作和口语中起着至关重要的作用。