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DD.1 Identify complete subjects and complete predicates in sentences

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What are complete subjects and complete predicates?

Every sentence has two main parts: the complete subject and the complete predicate. The complete subject tells who or what the sentence is about. The complete predicate tells what the subject does or is.

Examples:
  • The tall oak tree (complete subject) provides shade in the park (complete predicate).
  • My best friend (complete subject) wrote me a letter (complete predicate).
Note

The complete subject includes all the words that tell who or what the sentence is about, while the complete predicate includes all the words that tell about the action or state of being.

How do you find the complete subject?

To find the complete subject, ask yourself: Who or what is the sentence about? Look for the main noun or pronoun and all the words that describe it.

Examples:
  • Sentence: The excited children ran to the playground.
  • Complete subject: The excited children
Note

The complete subject can include adjectives, articles, and phrases that give more detail about the main noun.

How do you find the complete predicate?

To find the complete predicate, ask: What is the subject doing? or What is happening to the subject? It begins with the verb and includes all the words that describe the action or condition.

Examples:
  • Sentence: The dog barked loudly at the stranger.
  • Complete predicate: barked loudly at the stranger
Note

The complete predicate always contains the verb. It may also include adverbs, objects, and prepositional phrases.

Putting it together in a sentence

When you put the complete subject and complete predicate together, you form a full sentence that expresses a complete thought.

Examples:
  • The colorful parrot (complete subject) squawked loudly in its cage (complete predicate).
  • My little brother (complete subject) is learning to ride a bike (complete predicate).
Note

Every complete sentence must have both a complete subject and a complete predicate. Without one, it is not a full sentence.

Why is this important?

Understanding complete subjects and complete predicates helps you write clear and complete sentences. It also improves your reading comprehension by showing you how ideas are organized in sentences.

Examples in writing:
  • Without a subject: Ran through the field. (Who ran?)
  • Without a predicate: The tall mountain. (What about the mountain?)
  • With both: The tall mountain (subject) rose high above the valley (predicate).
Note

Knowing how to identify subjects and predicates will help you avoid sentence fragments and write with confidence.