The grammar game gets ramped up in second grade, with the introduction of such concepts as plurals, adjectives, adverbs, subject and object pronouns, and present and past tense. Our second grade grammar worksheets cover all of this material, and a whole lot more. And with dozens of crossword puzzles, word searches, matching games, and sentence scrambles, our second grade grammar worksheets entertain young students while improving their writing, reading, and speaking abilities.