1 [U] the rules of a language, for example for forming words or joining words together in sentences 语法: Russian grammar can be difficult for foreign learners. 对外国人来说，俄语语法也许很难学。

2 [U] the way in which sb uses the rules of a language 使用语法的方式: You have a good vocabulary, but your grammar needs improvement. 你懂得的词汇不少，可是语法须要改进。

3 [C] a book that describes and explains the rules of a language 语法书: a French grammar 法语语法书