“What is a Sentence? Learn Its Parts with Examples and common Mistakes to Avoid in Writing Sentences”

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 1. Introduction

In English, the sentence is the foundation of clear communication. Whether you’re writing an essay, answering exam questions, or simply talking to someone, correct sentence construction plays a key role in expressing your ideas effectively. A sentence gives your thoughts structure and meaning.

In this blog post, you’ll learn what a sentence is, the parts that make up a sentence—including the subject, predicate, object, and extension of predicate—and the 10 most common mistakes you should avoid while writing sentences. Let’s get started!

 2. What is a Sentence?

A sentence is a group of words that expresses a complete thought and follows the rules of grammar. Every proper sentence must have a subject and a predicate. It should make sense on its own.

Key Rule:
A complete thought + correct grammar = a sentence

Examples:

• She reads books.

• They are playing in the garden.

Each of these sentences has a subject (who is doing the action) and a predicate (what they are doing), and they make complete sense.

 3. Parts of a Sentence

a. Subject

The subject is the part of the sentence that tells us who or what the sentence is about. It usually appears at the beginning and performs the action or is described in the sentence.

How to find it: Ask “Who?” or “What?” before the verb.
Example:

• Ali is eating mangoes.
  ("Who is eating?" → Ali is the subject.)

  
  
  
  
  
  
  

b. Predicate

The predicate tells us something about the subject. It usually contains the verb and shows the action or state of the subject.

Example:

• Ali is eating mangoes.
  (The part "is eating mangoes" is the predicate—it tells what Ali is doing.)

  
  
  
  
  
  
  

c. Object

The object is the word or group of words that receives the action of the verb. It answers the question “What?” or “Whom?”

Types of Objects:

• Direct Object: Receives the action directly.
  Example: She reads books.

• Indirect Object: Receives the benefit of the action.
  Example: He gave his friend a gift.

  
  
  
  
  
  
  

d. Extension of Predicate

An extension of the predicate includes extra information that makes the sentence more detailed. These could be adverbs, prepositional phrases, or modifiers that give us more context.

Example:

• She runs every morning in the park.
  ("Every morning in the park" extends the predicate and gives more detail about when and where she runs.)

Why it matters:
Using extensions helps make your sentences richer and more meaningful.

 4. Examples of Complete Sentences

Here are a few examples where each part of the sentence is clearly shown:

1. Sara (subject) writes poems (predicate) in her notebook (extension).

2. The children (subject) are playing (predicate) outside the house (extension).

3. My brother (subject) gave me (predicate) a gift (object) on my birthday (extension).

4. They (subject) watch movies (predicate) every Friday (extension).

5. The teacher (subject) is explaining the lesson (predicate).

These examples show how different parts come together to form a complete, meaningful sentence.

 5. Top 10 Common Mistakes While Writing a Sentence

Below are ten common sentence mistakes that learners should avoid, along with examples and corrections:

1. Missing Subject or Verb

   • ❌ Went to the market.

   • ✅ She went to the market.

2. Incomplete Sentence (Fragment)

   • ❌ When he arrived.

   • ✅ He was tired when he arrived.

3. Run-on Sentences

   • ❌ I love pizza I eat it every day.

   • ✅ I love pizza, and I eat it every day.

4. Wrong Tense Usage

   • ❌ She go to school yesterday.

   • ✅ She went to school yesterday.

5. Subject-Verb Disagreement

   • ❌ They goes to the park.

   • ✅ They go to the park.

6. Wrong Word Order

   • ❌ Quickly he runs.

   • ✅ He runs quickly.

7. Incorrect Punctuation

   • ❌ I like apples oranges bananas.

   • ✅ I like apples, oranges, and bananas.

8. Misuse of Connectors

   • ❌ He is tired but he slept early.

   • ✅ He is tired, so he slept early.

9. Repetition of Ideas

   • ❌ She was very happy and joyful and glad.

   • ✅ She was very happy.

10. Over-complicating Simple Sentences

    • ❌ It is my personal opinion that I think that she might perhaps be right.

    • ✅ I think she might be right.

      
      
      

"Mastering sentence structure is the first step to improving your English grammar. If you found this guide useful, share it with others and explore more grammar tips on EnglishGrammatica. Keep learning, keep growing — one sentence at a time!"

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