名词
中文翻译：语法正确性
同义词：
['grammar', 'correctness', 'accuracy', 'precision', 'formality']
例句：
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1. The teacher asked us to pay attention to the grammatical structure of the sentences.
老师要求我们注意句子的语法结构。
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2. She was very concerned about her daughter's grammar.
她非常担心女儿的语法。
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3. Grammar is essential for effective communication.
语法对于有效沟通至关重要。