Grammar is the broad term for the structure of a language. It includes how words are formed, the function of words, how a complete thought is expressed, and the rules on how words and thoughts are written correctly. Our grammar worksheets are assembled in groups: the parts of speech, mechanics, the parts of a sentence, word usage, punctuation, and sentence structure. Click on the category name to see additional information about the worksheets. They are free for use in the classroom or at home.