A rule or set of rules that must be followed to form correct sentences; in linguistics, rules that describe a language's structure. Used in teaching to guide forms and usage.
日本語の敬語には複雑な文法規則がある。
Japanese honorifics have complex grammar rules.
この文法規則を覚えれば、受動態の文が作れるようになる。
If you learn this grammar rule, you'll be able to form passive sentences.
教師は具体例を使って文法規則を説明した。
The teacher explained the grammar rules using concrete examples.