Learn on PengiElements of Language, 2nd CourseChapter 1: The Parts of a Sentence: Subject and Predicate, Kinds of Sentences

Lesson 4: Classifying Sentences by Purpose

In this Grade 5 lesson from Elements of Language, 2nd Course, students learn to classify sentences by purpose into four types: declarative, imperative, interrogative, and exclamatory. The lesson covers how each sentence type functions — making statements, giving commands, asking questions, or expressing strong feeling — along with the correct end punctuation for each. Students practice identifying all four sentence types through two sets of guided exercises.

Section 1

Declarative and Imperative Sentences

Definition

A declarative sentence makes a statement and ends with a period. An imperative sentence gives a command or makes a request. Most imperative sentences end with a period. A strong command ends with an exclamation point.

Explanation

A declarative sentence simply declares a fact or an idea. Think of it as sharing information. An imperative sentence, on the other hand, gives an order or makes a request. A handy trick to remember is that in imperative sentences, the subject is always you, even when it's not written. We call this the 'understood subject' because it's implied!

Examples

Declarative Sentences

  • My dog loves to play fetch. [This sentence makes a statement.]
  • Our school is on the next street. [This sentence makes a statement.]

Section 2

Interrogative and Exclamatory Sentences

Definition

An interrogative sentence asks a question and ends with a question mark. An exclamatory sentence shows excitement or strong feeling and ends with an exclamation point.

Explanation

Think of an interrogative sentence as a detective looking for clues—it always asks a question and ends with a question mark. An exclamatory sentence is like a cheerleader! It's full of strong emotion or excitement and ends with an exclamation point to show that powerful feeling.

Examples

Interrogative Sentence

  • Did you finish your homework? [This sentence asks a question.]

Book overview

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Chapter 1: The Parts of a Sentence: Subject and Predicate, Kinds of Sentences

  1. Lesson 1

    Lesson 1: Sentence or Sentence Fragment?

  2. Lesson 2

    Lesson 2: The Subject

  3. Lesson 3

    Lesson 3: The Predicate

  4. Lesson 4Current

    Lesson 4: Classifying Sentences by Purpose

Lesson overview

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Section 1

Declarative and Imperative Sentences

Definition

A declarative sentence makes a statement and ends with a period. An imperative sentence gives a command or makes a request. Most imperative sentences end with a period. A strong command ends with an exclamation point.

Explanation

A declarative sentence simply declares a fact or an idea. Think of it as sharing information. An imperative sentence, on the other hand, gives an order or makes a request. A handy trick to remember is that in imperative sentences, the subject is always you, even when it's not written. We call this the 'understood subject' because it's implied!

Examples

Declarative Sentences

  • My dog loves to play fetch. [This sentence makes a statement.]
  • Our school is on the next street. [This sentence makes a statement.]

Section 2

Interrogative and Exclamatory Sentences

Definition

An interrogative sentence asks a question and ends with a question mark. An exclamatory sentence shows excitement or strong feeling and ends with an exclamation point.

Explanation

Think of an interrogative sentence as a detective looking for clues—it always asks a question and ends with a question mark. An exclamatory sentence is like a cheerleader! It's full of strong emotion or excitement and ends with an exclamation point to show that powerful feeling.

Examples

Interrogative Sentence

  • Did you finish your homework? [This sentence asks a question.]

Book overview

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

Continue this chapter

Chapter 1: The Parts of a Sentence: Subject and Predicate, Kinds of Sentences

  1. Lesson 1

    Lesson 1: Sentence or Sentence Fragment?

  2. Lesson 2

    Lesson 2: The Subject

  3. Lesson 3

    Lesson 3: The Predicate

  4. Lesson 4Current

    Lesson 4: Classifying Sentences by Purpose