All About Declarative Sentences: Definition, Transformations & Examples

Tips, Writing

2nd July 2024

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Declarative sentences are a fundamental part of communication, providing information, stating facts, or expressing ideas clearly and directly. Understanding their structure and usage is crucial for effective writing and speaking. This article explores what declarative sentences are, presents 5 declarative sentence examples, discusses the kinds of declarative sentences, and explains how to transform them into other sentence types, such as interrogative and exclamatory forms.

What are Declarative Sentences?

Declarative sentences are statements that relay information or express an idea. They are the most common type of sentence used in both spoken and written language. Declarative sentences end with a period and are used to make declarations, provide facts, and convey straightforward information.


  • The sun rises in the east.

Characteristics of Declarative Sentences

  1. Subject-Predicate Structure: Every declarative sentence has a subject (who or what the sentence is about) and a predicate (what is being said about the subject).
  2. Ends with a Period: Declarative sentences always end with a period.
  3. Statement of Fact or Opinion: These sentences provide factual information or state an opinion.

5 Declarative Sentence Examples

To illustrate what are declarative sentences, here are 5 declarative sentence examples:

  1. The cat is sleeping on the sofa.
  2. She loves reading historical novels.
  3. The conference starts at 9 AM tomorrow.
  4. Water boils at 100 degrees Celsius.
  5. They decided to move to a new city.

Kinds of Declarative Sentence

Declarative sentences can be categorised into two main types: simple declarative sentences and compound declarative sentences.

Simple Declarative Sentences

A simple declarative sentence consists of a single independent clause. It has a subject and a predicate, and it conveys one complete thought.


  • The sky is blue.

Compound Declarative Sentences

A compound declarative sentence contains two or more independent clauses joined by a coordinating conjunction (e.g., and, but, or) or a semicolon. It conveys multiple related ideas within a single sentence.


  • I wanted to go for a walk, but it started to rain.

Transformations of Declarative Sentences

Declarative sentences can be transformed into other types of sentences, such as interrogative, exclamatory, and imperative sentences. These transformations change the way information is conveyed and can add variety and emphasis to writing and speech.

Declarative to Interrogative

Transforming a declarative to an interrogative sentence involves changing a statement into a question. This can be done by rearranging the word order and adding an auxiliary verb or a question word.


  • Declarative: She is coming to the party.
  • Interrogative: Is she coming to the party?
  • Declarative: They have finished their homework.
  • Interrogative: Have they finished their homework?

Declarative to Exclamatory

Transforming a declarative to exclamatory sentence involves expressing strong emotion or surprise. This is achieved by adding an exclamation mark and sometimes rephrasing the sentence to emphasise the emotion.


  • Declarative: It is a beautiful day.
  • Exclamatory: What a beautiful day it is!
  • Declarative: She won the competition.
  • Exclamatory: She won the competition!

Assertive and Declarative Sentence: Is There Any Difference?

An assertive sentence is another term used to describe declarative sentences. Both terms refer to sentences that make a statement, provide information, or express an opinion. The terms are often used interchangeably in grammar.

Example of Assertive (or Declarative) Sentence:

  • The library is open until 8 PM.

Practical Applications of Declarative Sentences

Understanding how to effectively use declarative sentences can improve both writing and speaking skills. Here are some practical applications:

  1. Academic Writing: Declarative sentences are essential for presenting facts, stating research findings, and forming arguments in essays and reports.
  2. Professional Communication: In emails, reports, and presentations, declarative sentences clearly convey information and instructions.
  3. Everyday Conversations: Declarative sentences are used in everyday conversations to share information, describe events, and express opinions.

Enhancing Writing with Declarative Sentences

To enhance your writing with declarative sentences, consider the following tips:

  • Clarity and Conciseness: Use declarative sentences to present information clearly and concisely. Avoid unnecessary complexity.
  • Vary Sentence Structure: While declarative sentences are fundamental, varying sentence structure by including questions, exclamations, and commands can make your writing more engaging.
  • Use of Compound Sentences: Combine related ideas using compound declarative sentences to show connections between thoughts and add depth to your writing.

Common Mistakes to Avoid

When using declarative sentences, be mindful of common mistakes that can undermine clarity and effectiveness:

Run-On Sentences: Ensure that each declarative sentence is complete and properly punctuated. Avoid run-on sentences by using appropriate conjunctions or punctuation marks.

Fragment Sentences: A declarative sentence must have both a subject and a predicate. Avoid fragments by ensuring each sentence expresses a complete thought.

Redundancy: Avoid unnecessary repetition of ideas or information. Be concise and to the point.

To Conclude

Declarative sentences are the backbone of effective communication, providing a clear and direct way to convey information. By understanding what are declarative sentences, examining 5 declarative sentence examples, exploring the kinds of declarative sentences, and learning how to transform declarative sentences into other forms, you can enhance both your writing and speaking skills. Remember, mastering declarative sentences involves not only knowing how to construct them but also knowing how to use them effectively to communicate your ideas clearly and persuasively.

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