In traditional sentence analysis, the complete predicate is everything a clause states about its complete subject. It contains the full verb phrase and any objects, complements, or modifiers that belong to the predicate. Recognizing this boundary helps students distinguish the verb core from the details that complete or modify it, analyze clauses accurately, and identify fragments. This guide explains the components, identification steps, common challenges, and differences among simple, complete, and compound predicates.
What is a Complete Predicate?
A complete predicate contains the complete verb phrase plus every object, subject complement, and modifier attached to it. In a standard declarative clause, it is the portion remaining after the complete subject has been separated.
Example: “The cat slept peacefully on the warm windowsill.”
In this sentence, “The cat” is the subject, and “slept peacefully on the warm windowsill” is the complete predicate. The complete predicate tells us not only that the cat slept but also how and where it slept.
The complete predicate expresses the clause’s full assertion about the subject. It can describe an action, occurrence, state, identity, characteristic, or relationship—not only what the subject actively does.
Components of a Complete Predicate
A complete predicate begins with a verb or verb phrase and extends to the words that complete or modify it. These elements state something about the subject. The exact combination depends on the verb and sentence pattern:
The Main Verb
The main verb is the lexical core of the predicate. It can express an action, event, state, or relationship. When auxiliaries are present, the main verb combines with them to form the complete verb phrase.
Examples:
- “He runs every morning.”
- “She is eating lunch.”
- “They had been waiting for an hour.”
In the first example, the bold text is a one-word verb. In the next two, it is the full verb phrase; the lexical main verbs are eating and waiting.
Helping Verbs
Helping verbs, or auxiliaries, combine with the main verb to express tense, aspect, voice, mood, or emphasis. Forms of be, have, and do serve as primary auxiliaries, while modal auxiliaries include can, will, might, and must. Every auxiliary in the clause’s verb chain belongs to the complete predicate.
Examples:
- “She was singing beautifully.”
- “We have completed the project.”
- “They will be arriving soon.”
Here, “was,” “have,” and “will be” combine with their main verbs to form verb phrases that locate or characterize the event more precisely.
Modifiers and Objects
Objects receive or complete the action of certain verbs, while subject complements identify or describe the subject after a linking verb. Predicate modifiers can describe manner, time, place, frequency, degree, or other circumstances. All of these elements belong to the complete predicate when they are attached to its verb phrase.
Examples:
- “They quickly wrote a letter.”
- Modifier: “quickly”
- Object: “a letter”
- “The boy threw the ball across the field.”
- Object: “the ball”
- Modifier: “across the field”
- “She enjoyed the concert thoroughly.”
- Object: “the concert”
- Modifier: “thoroughly”
In each case, the complete predicate includes the verb together with its object and modifiers. A linking-verb example such as “The soup tastes surprisingly sweet” would also include the subject complement “surprisingly sweet.”
Recognizing verbs, objects, complements, and modifiers helps reveal the full grammatical statement made about the subject instead of reducing the predicate to an action word alone.
How to Find the Complete Predicate in a Sentence
Identify complete predicates one clause at a time. In a sentence with independent and dependent clauses, each clause has its own subject-predicate structure.
Step-by-step Guide
1. Identify the Subject
Identify the complete subject of the clause, including its modifiers. The subject identifies who or what the predicate concerns; in a command, the subject “you” is understood rather than written.
Example:
- In the sentence, “The girl danced gracefully,” the subject is “The girl”.
2. Locate the Verb or Verb Phrase
Locate the main verb and scan for every auxiliary that belongs to its verb chain. The verb phrase may express an action, occurrence, state, identity, or relationship.
Example:
- In the same sentence, “danced” is the main verb.
3. Include All Modifiers and Complements
Include the entire verb phrase and every object, complement, and modifier attached to it. Do not include words that modify the subject, even when they appear close to the verb.
Example:
- In “The girl danced gracefully”, “danced gracefully” is the complete predicate, as “gracefully” describes how she danced.
Finally, confirm that the selected words express the full assertion about the complete subject. In ordinary statements the predicate is often continuous, but questions, inversions, and fronted modifiers may split or reposition its elements.
Common Challenges
1. Misidentifying Modifiers or Objects
Modifiers can belong either to the subject or predicate. Determine what each word modifies instead of assuming that every descriptive word belongs to the predicate.
Example:
- In “The playful puppy barked happily,” “playful” modifies puppy and belongs to the complete subject, while “barked happily” is the complete predicate.
2. Differentiating Between Subject and Predicate
Long subject modifiers, embedded clauses, questions, and inversions can obscure the boundary. Find the finite verb, ask who or what it makes a statement about, and restore ordinary subject-before-verb order when useful.
Example:
- In “The students who were late to class apologized to the teacher,” the complete predicate is “apologized to the teacher.” Words like “who were late to class” modify the subject (“The students”) but do not belong to the predicate.
These checks are more reliable than selecting every word after the subject, especially when predicate elements are fronted or an embedded clause appears inside the complete subject.
Complete Predicate Examples
The following examples separate each complete subject from everything asserted about it in the complete predicate:
1. “The dog barked loudly at the passing cars.”
- Subject: “The dog”
- Complete predicate: “barked loudly at the passing cars”
2. “She is reading a fascinating book about space exploration.”
- Subject: “She”
- Complete predicate: “is reading a fascinating book about space exploration”
3. “The students have been studying diligently for their exams.”
- Subject: “The students”
- Complete predicate: “have been studying diligently for their exams”
4. “The ancient oak tree swayed gently in the autumn breeze.”
- Subject: “The ancient oak tree”
- Complete predicate: “swayed gently in the autumn breeze”
5. “The dedicated scientist conducted groundbreaking research in her laboratory.”
- Subject: “The dedicated scientist”
- Complete predicate: “conducted groundbreaking research in her laboratory”
Each complete predicate contains the verb core and the details that complete or modify it, while the adjectives before the subject noun remain in the complete subject.
Simple vs. Complete Predicate
The simple predicate is contained within the complete predicate. The distinction concerns how much of the predicate is being identified.
- Simple Predicate: The main verb or full auxiliary-plus-main-verb chain, excluding objects, complements, and modifiers.
- Example: In “The cat sleeps,” “sleeps” is the simple predicate.
- Complete Predicate: The simple predicate plus all objects, complements, and modifiers belonging to the predicate.
- Example: In “The cat sleeps peacefully in the warm sunlight,” the complete predicate includes the verb and additional details.
This distinction helps learners:
- Separate the verb core from the details that extend it.
- Recognize objects, complements, and predicate modifiers.
- Detect missing verbs and incomplete clause structures.
- Revise sentences with greater grammatical precision.
Compound vs. Complete Predicate
A compound predicate contains two or more coordinated verbs or verb phrases that share one subject. Compound describes the predicate’s internal coordination, while complete describes its full scope; therefore, a complete predicate can also be compound:
- Compound Predicate Example: In “The chef chopped the vegetables and seasoned the meat,” “chopped the vegetables and seasoned the meat” is both the compound predicate and the complete predicate.
- Noncompound Complete Predicate Example: In “The chef carefully chopped the vegetables into uniform pieces,” “carefully chopped the vegetables into uniform pieces” is a complete predicate containing one main verb.
Key differences:
- Compound predicates coordinate two or more verbs or verb phrases, commonly with and, or, or but.
- Complete predicates may contain one verb or a compound series of verbs together with all attached objects, complements, and modifiers.
- A clause has one complete predicate, and that complete predicate may have a compound structure.
Frequently Asked Questions
1. What’s the main difference between a complete predicate and a simple predicate?
The simple predicate is the main verb or complete verb chain, including auxiliaries. The complete predicate contains that simple predicate plus every object, complement, and modifier that belongs to it. In “The students have finished the project early,” “have finished” is simple, while “have finished the project early” is complete.
2. Can a complete predicate contain multiple verbs?
Yes. A complete predicate may contain a multiword verb chain, as in “has been waiting,” or coordinated verbs that form a compound predicate, as in “waited and watched.” A multiword simple predicate has one main verb with auxiliaries; a compound predicate has two or more coordinated main verbs or verb phrases.
3. Why is understanding complete predicates important?
Identifying the complete predicate helps readers see everything a clause asserts about its subject. It supports analysis of verb phrases, objects, complements, modifiers, subject-verb relationships, and sentence fragments, giving writers a clearer basis for revising sentence structure.
4. Is the complete predicate always at the end of a sentence?
No. It usually follows the subject in a standard statement, but its elements may be repositioned or separated. In “Quietly, the students entered the room,” the fronted adverb quietly belongs with the complete predicate “quietly entered the room.” Questions and inverted constructions can also place part of the verb phrase before the subject.
Wrapping Up: The Importance of Understanding Complete Predicates
A complete predicate is the full grammatical statement made about a clause’s subject. It includes the complete verb phrase and every object, complement, and modifier belonging to that predicate, whether those elements describe an action, state, identity, or relationship.
To find it reliably, analyze one clause at a time, identify the complete subject and verb chain, and determine which remaining words complete or modify the verb. Remember that complete describes scope, while compound describes coordination; one predicate can be both.
Practice with Worksheetzone’s sentence structure worksheets to compare simple, complete, and compound predicates in statements, questions, commands, and sentences with fronted modifiers.
