Subject Predicate Worksheet

Every complete sentence is built from two essential parts: a subject and a predicate. This subject predicate worksheet helps young writers see that division clearly by giving them real sentences to examine, one part at a time. The subject tells who or what the sentence is about, while the predicate tells what that subject is doing or what happened to it. Learning to spot both halves is one of the building blocks of strong sentence writing, and it sets kids up to write clear, complete thoughts instead of sentence fragments.

This 3rd grade sentences worksheet gives students eight original sentences about everyday moments — a puppy chasing a ball, a class planting a garden, grandparents baking cookies — and asks them to draw one line under the complete subject and two lines under the complete predicate in each one. A worked example at the top walks students through the process before they start, so the directions are never a mystery. Once they’ve practiced with the given sentences, kids write two sentences of their own and label the subject and predicate, turning the skill from a recognition task into something they can actually apply.

What’s Included

• 1 print-ready PDF worksheet
• Answer key
• 8 leveled example sentences plus a write-your-own extension activity

This subject predicate worksheet helps kids in three important ways. First, it builds sentence-level grammar awareness that carries over directly into their own writing, helping them avoid fragments and run-ons. Second, the mix of sentence types — including compound subjects like “Birds and butterflies” and compound predicates like “visited our classroom and showed us their truck” — stretches students past simple recognition into real analysis. Third, the write-your-own section gives kids a low-pressure way to apply what they’ve learned immediately, which helps the skill stick far better than underlining alone.

Teachers can extend this activity by having students swap papers and check each other’s underlining, turning it into a quick peer-review warm-up. At home, parents can turn any read-aloud into a mini grammar game by picking a sentence from a book and asking their child to point out the subject and the predicate out loud. For extra practice, try mixing in silly sentences the whole family makes up together — the sillier the sentence, the more kids want to find its subject and predicate.

Related Resources

• The Best English Worksheets for Kids
• Complete Sentences with Subject and Predicate Activity
• Subject Verb Agreement Worksheet
• Subject and Predicate Song (Original Music Video)