Learn on PengiElements of Language, 2nd CourseChapter 7: Sentence Structure: The Four Basic Sentence Structures

Lesson 1: Simple Sentences and Compound Sentences

In this Grade 5 grammar lesson from Elements of Language, 2nd Course, students learn to identify and distinguish between simple sentences and compound sentences. They practice recognizing independent clauses, compound subjects, and compound verbs within simple sentences, then explore how coordinating conjunctions and semicolons join two or more independent clauses to form compound sentences. The lesson includes exercises in which students underline subjects and verbs and classify sentence structures using examples from everyday language.

Section 1

Simple Sentences

Definition

A simple sentence contains one independent clause and no subordinate clauses.

Explanation

Think of a simple sentence as one complete thought! It needs a subject (who or what) and a verb (the action). Don't be fooled if you see more than one subject or verb; if they are all part of one main idea, it's still a simple sentence. It’s a single, standalone statement.

Examples

  • Tiny, colorful kites flew in the wind. [The subject is kites and the verb is flew.]
  • My brother and his friend built a fort. [This sentence has a compound subject: brother and friend.]
  • The puppy tumbled and rolled in the grass. [This sentence has a compound verb: tumbled and rolled.]

Section 2

Compound Sentences

Definition

A compound sentence contains two or more independent clauses and no subordinate clauses.

Explanation

A compound sentence joins two or more complete thoughts together into one sentence. Each of these clauses could be a sentence on its own! You can connect them using a comma with a joining word (like and, but, or) or you can use a semicolon (;) to link them.

Examples

  • Jessica planned the party, and Leo brought the music. [This sentence has two independent clauses joined by a comma and the conjunction and.]
  • The game was exciting; our team won in the final seconds. [This sentence has two independent clauses joined by a semicolon.]

Section 3

Simple vs. Compound Sentences

Definition

A simple sentence contains one independent clause and no subordinate clauses. A compound sentence contains two or more independent clauses and no subordinate clauses.

Explanation

How can you tell the difference? Count the complete thoughts! A simple sentence has just one subject-verb pair that forms a complete idea, even if the subject or verb is compound. A compound sentence has two or more separate subject-verb pairs, creating at least two complete ideas.

Examples

  • Simple: Maria opened her book and began to read. [This is a simple sentence. It has one subject (Maria) and a compound verb (opened and began).]
  • Compound: The lightning flashed brightly, and the thunder rumbled loudly. [This is a compound sentence. It has two independent clauses: 'The lightning flashed brightly' and 'the thunder rumbled loudly'.]

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Chapter 7: Sentence Structure: The Four Basic Sentence Structures

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    Lesson 1: Simple Sentences and Compound Sentences

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  2. Lesson 2

    Lesson 2: Complex Sentences and Compound-Complex Sentences

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Section 1

Simple Sentences

Definition

A simple sentence contains one independent clause and no subordinate clauses.

Explanation

Think of a simple sentence as one complete thought! It needs a subject (who or what) and a verb (the action). Don't be fooled if you see more than one subject or verb; if they are all part of one main idea, it's still a simple sentence. It’s a single, standalone statement.

Examples

  • Tiny, colorful kites flew in the wind. [The subject is kites and the verb is flew.]
  • My brother and his friend built a fort. [This sentence has a compound subject: brother and friend.]
  • The puppy tumbled and rolled in the grass. [This sentence has a compound verb: tumbled and rolled.]

Section 2

Compound Sentences

Definition

A compound sentence contains two or more independent clauses and no subordinate clauses.

Explanation

A compound sentence joins two or more complete thoughts together into one sentence. Each of these clauses could be a sentence on its own! You can connect them using a comma with a joining word (like and, but, or) or you can use a semicolon (;) to link them.

Examples

  • Jessica planned the party, and Leo brought the music. [This sentence has two independent clauses joined by a comma and the conjunction and.]
  • The game was exciting; our team won in the final seconds. [This sentence has two independent clauses joined by a semicolon.]

Section 3

Simple vs. Compound Sentences

Definition

A simple sentence contains one independent clause and no subordinate clauses. A compound sentence contains two or more independent clauses and no subordinate clauses.

Explanation

How can you tell the difference? Count the complete thoughts! A simple sentence has just one subject-verb pair that forms a complete idea, even if the subject or verb is compound. A compound sentence has two or more separate subject-verb pairs, creating at least two complete ideas.

Examples

  • Simple: Maria opened her book and began to read. [This is a simple sentence. It has one subject (Maria) and a compound verb (opened and began).]
  • Compound: The lightning flashed brightly, and the thunder rumbled loudly. [This is a compound sentence. It has two independent clauses: 'The lightning flashed brightly' and 'the thunder rumbled loudly'.]

Book overview

Jump across lessons in the current chapter without opening the full course modal.

Continue this chapter

Chapter 7: Sentence Structure: The Four Basic Sentence Structures

  1. Lesson 1Current

    Lesson 1: Simple Sentences and Compound Sentences

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  2. Lesson 2

    Lesson 2: Complex Sentences and Compound-Complex Sentences

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