Sentence Structure Review Worksheet | Grade 3 Essential

This Grade 3 sentence structure worksheet provides comprehensive practice to help students identify subjects, predicates, and coordinating conjunctions. By working through 15 targeted multiple-choice questions, learners develop the ability to distinguish between complete sentences, fragments, and run-ons while mastering the FANBOYS acronym for compound sentence construction.

At a Glance

• Grade: 3 · Subject: ELA
• Standard: CCSS.ELA-LITERACY.L.3.1.I — Produce simple, compound, and complex sentences while correcting fragments and run-ons
• Skill Focus: Sentence Parts & Conjunctions
• Format: 2 pages · 15 problems · Answer key included · PDF
• Best For: Grammar review or formative assessment
• Time: 15–20 minutes

The resource consists of a two-page PDF featuring 15 multiple-choice questions. The first section focuses on identifying the core components of a sentence—the subject and predicate—and recognizing common errors like fragments and run-on sentences. The second half transitions into coordinating conjunctions, specifically testing the FANBOYS acronym and the correct usage of "but," "or," and "and" in context.

• Guided practice: Questions 1-4 define foundational terms like subject, predicate, fragment, and run-on to establish a baseline of knowledge.
• Supported practice: Questions 5-9 provide specific sentence examples where students must identify missing components or structural errors with clear options.
• Independent practice: Questions 10-15 require students to apply conjunction rules and recall the FANBOYS acronym to join clauses effectively.

This progression follows a gradual-release model, moving from conceptual definitions to applied grammatical analysis.

This worksheet is aligned with CCSS.ELA-LITERACY.L.3.1.I, which requires students to produce simple, compound, and complex sentences. It also supports CCSS.ELA-LITERACY.L.3.1.H by focusing on the use of coordinating conjunctions. Both standard codes can be copied directly into lesson plans, IEP goals, or district curriculum mapping tools.

Use this worksheet as a mid-unit review after teaching the components of a sentence and the role of conjunctions. It serves as an excellent formative assessment; teachers should observe if students struggle more with identifying fragments versus run-ons to guide small-group intervention. Expected completion time is 15 to 20 minutes.

This resource is designed for third-grade students but is also appropriate for second-grade enrichment or fourth-grade remediation. It pairs naturally with an anchor chart on FANBOYS or a direct instruction lesson on sentence types.

According to the Fisher & Frey (2014) framework for purposeful instruction, students require structured opportunities to analyze sentence architecture to improve overall writing fluency. This worksheet addresses the core requirements of CCSS.ELA-LITERACY.L.3.1.I by isolating the mechanics of sentence construction, including the identification of subjects, predicates, and the proper use of coordinating conjunctions. Research from the NAEP suggests that mastery of these foundational grammar skills is a significant predictor of later success in complex composition tasks. By providing 15 specific practice items, this resource allows educators to pinpoint exactly where a student's understanding of sentence boundaries may be failing. The inclusion of the FANBOYS acronym provides a mnemonic scaffold that supports long-term retention of conjunction rules, facilitating the transition from simple to compound sentence production in student writing.