grammatical
adj. 语法的，和语法有关的；语法正确的，符合语法的；语法词汇的，虚词的
例句
Native speakers can distinguish between grammatical and ungrammatical sentences even when they have never heard particular combinations before.
母语使用者可以分辨符合语法规则和不符合语法规则的句子，即使他们以前从没有听过这些特定的词语组合。
《柯林斯英汉双解大词典》
It contains many grammatical errors.
它包含许多语法错误。
Except for a few grammatical mistakes, this composition of yours is well written.
除了几处语法错误之外，你这篇作文写得不错。
