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Compound Sentences Worksheet

Free printable worksheet with answer key. Practice joining two simple sentences into a compound sentence using and, but, or. Perfect for Grades 2–4.

📄 Free PDF✅ Answer Key🖨️ Print-Ready
HomeGrammarCompound Sentences Worksheet

Preview: Compound Sentences

2 pages
GrammarGrades 2–4Free Printable
Name: __________________    Date: __________

🔗 Compound Sentences — Joining Two Ideas

🔗 FANBOYS Conjunctions

for
reason
and
addition
nor
negative
but
contrast
or
choice
yet
contrast
so
result

📖 Grammar Guide

A compound sentence joins two complete sentences using a comma + conjunction. The 7 conjunctions spell FANBOYS: For, And, Nor, But, Or, Yet, So. Each side of the conjunction must be a complete sentence with its own subject and predicate.

✏️ Choose the Conjunction

1. I like cats I like dogs.  and / but
2. I love dogs I am allergic.  so / but

🔗 Build a Compound Sentence

3. The sun came out. We went outside. → The sun came out, we went outside.
4. She was tired. She finished her homework. → She was tired, she finished her homework.

🔍 Compound or Simple?

5. Tom likes pizza and ice cream. Compound / Simple
6. She ran, and he followed. Compound / Simple

✍️ Write Your Own

7. Use "but":
8. Use "so":
✅ Answers: 1.and 2.but 3.and/so 4.but/yet 5.Simple 6.Compound
🔗 FANBOYS cards 📖 Grammar guide ✏️ Choose conjunction 🔗 Build compound 🔍 Compound or Simple? ✍️ Write your own ✅ Answer key 🖨️ A4 print-ready

📌 Also try: Writing Sentences — put grammar into practice

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About This Compound Sentences Worksheet – Joining Sentences | Aurora

This free printable compound sentences worksheet – joining sentences is designed to help students in Grades K–5 build confidence and mastery through focused, structured practice. Print on US Letter or A4 paper — no special equipment or preparation needed. An answer key is included where applicable, making it easy for both teachers and parents to check student work quickly and accurately.

What Students Will Learn

By completing this worksheet, students will develop and reinforce grade-appropriate compound sentences worksheet – joining sentencesskills through exercises that move from simpler concepts to more challenging applications. Each problem or activity is designed to help students build understanding step by step. The worksheet can be used as a pre-assessment to gauge existing knowledge, as guided practice during a lesson, or as independent work to consolidate learning after instruction.

How Teachers Can Use This Worksheet

How Parents and Homeschoolers Can Use This Worksheet

Print the worksheet and sit down with your child to work through it together. For younger students, read each question aloud and discuss what it is asking before they write their answer. For older students, let them complete the worksheet independently, then review incorrect answers together — focus on understanding why the mistake happened rather than just marking it wrong. To make the activity more engaging, try setting a timer and turning it into a friendly challenge, or offer a small reward for completing a full page with focus and effort. After finishing, ask your child to explain one concept they learned in their own words — teaching back is one of the most effective ways to solidify understanding.

Skills Covered

parts of speech · sentence structure · punctuation · verb tenses · writing mechanics

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