The Parts of the Sentence

The Parts of the Sentence 

The parts of the sentence are a set of terms for describing how people construct sentences from smaller pieces. There is not a direct correspondence between the parts of the sentence and the parts of speech -- the subject of a sentence, for example, could be a noun, a pronoun, or even an entire phrase or clause. Like the parts of speech, however, the parts of the sentence form part of the basic vocabulary of grammar, and it is important that you take some time to learn and understand them.

Subject and Predicate

Every complete sentence contains two parts: a subject and a predicate. The subject is what (or whom) the sentence is about, while the predicate tells something about the subject. In the following sentences, the predicate is enclosed in braces ({}), while the subject is highlighted.

Judy {runs}.

Judy and her dog {run on the beach every morning}.

To determine the subject of a sentence, first isolate the verb and then make a question by placing "who?" or "what?" before it -- the answer is the subject.

The audience littered the theatre floor with torn wrappings and spilled popcorn.

The verb in the above sentence is "littered." Who or what littered? The audience did. "The audience" is the subject of the sentence. The predicate (which always includes the verb) goes on to relate something about the subject: what about the audience? It "littered the theatre floor with torn wrappings and spilled popcorn."

Unusual Sentences

Imperative sentences (sentences that give a command or an order) differ from conventional sentences in that their subject, which is always "you," is understood rather than expressed.

Stand on your head. ("You" is understood before "stand.")

Be careful with sentences that begin with "there" plus a form of the verb "to be." In such sentences, "there" is not the subject; it merely signals that the true subject will soon follow.

There were three stray kittens cowering under our porch steps this morning.

If you ask who? or what? before the verb ("were cowering"), the answer is "three stray kittens," the correct subject.

Simple Subject and Simple Predicate

Every subject is built around one noun or pronoun (or more) that, when stripped of all the words that modify it, is known as the simple subject. Consider the following example:

A piece of pepperoni pizza would satisfy his hunger.

The subject is built around the noun "piece," with the other words of the subject -- "a" and "of pepperoni pizza" -- modifying the noun. "Piece" is the simple subject.
Likewise, a predicate has at its centre a simple predicate, which is always the verb or verbs that link up with the subject. In the example we just considered, the simple predicate is "would satisfy" -- in other words, the verb of the sentence.
A sentence may have a compound subject -- a simple subject consisting of more than one noun or pronoun -- as in these examples:

Team pennants, rock posters and family photographs covered the boy's bedroom walls.

Her uncle and she walked slowly through the Inuit art gallery and admired the powerful sculptures exhibited there.

The second sentence above features a compound predicate, a predicate that includes more than one verb pertaining to the same subject (in this case, "walked" and "admired").

Objects and Complements

Objects

A verb may be followed by an object that completes the verb's meaning. Two kinds of objects follow verbs: direct objects and indirect objects. To determine if a verb has a direct object, isolate the verb and make it into a question by placing "whom?" or "what?" after it. The answer, if there is one, is the direct object:

Direct Object

The advertising executive drove a flashy red Porsche.

Direct Object

Her secret admirer gave her a bouquet of flowers.

The second sentence above also contains an indirect object. An indirect object (which, like a direct object, is always a noun or pronoun) is, in a sense, the recipient of the direct object. To determine if a verb has an indirect object, isolate the verb and ask to whom?, to what?, for whom?, or for what? after it. The answer is the indirect object.
Not all verbs are followed by objects. Consider the verbs in the following sentences:

The guest speaker rose from her chair to protest.

After work, Randy usually jogs around the canal.

Transitive and Intransitive Verbs

Verbs that take objects are known as transitive verbs. Verbs not followed by objects are called intransitive verbs.
Some verbs can be either transitive verbs or intransitive verbs, depending on the context:

Direct Object

I hope the Senators win the next game.

No Direct Object

Did we win?

Subject Complements

In addition to the transitive verb and the intransitive verb, there is a third kind of verb called a linking verb. The word (or phrase) which follows a linking verb is called not an object, but a subject complement.
The most common linking verb is "be." Other linking verbs are "become," "seem," "appear," "feel," "grow," "look," "smell," "taste," and "sound," among others. Note that some of these are sometimes linking verbs, sometimes transitive verbs, or sometimes intransitive verbs, depending on how you use them:

Linking verb with subject complement

He was a radiologist before he became a full-time yoga instructor.

Linking verb with subject complement

Your homemade chili smells delicious.

Transitive verb with direct object

I can't smell anything with this terrible cold.

Intransitive verb with no object

The interior of the beautiful new Buick smells strongly of fish.

Note that a subject complement can be either a noun ("radiologist", "instructor") or an adjective ("delicious").

Object Complements

(by David Megginson)

An object complement is similar to a subject complement, except that (obviously) it modifies an object rather than a subject. Consider this example of a subject complement:

The driver seems tired.

In this case, as explained above, the adjective "tired" modifies the noun "driver," which is the subject of the sentence.
Sometimes, however, the noun will be the object, as in the following example:

I consider the driver tired.

In this case, the noun "driver" is the direct object of the verb "consider," but the adjective "tired" is still acting as its complement.
In general, verbs which have to do with perceiving, judging, or changing something can cause their direct objects to take an object complement:

Paint it black.

The judge ruled her out of order.

I saw the Prime Minister sleeping.

In every case, you could reconstruct the last part of the sentence into a sentence of its own using a subject complement: "it is black," "she is out of order," "the Prime Minister is sleeping."

Clauses and Phrases

To understand punctuation, it is helpful to understand the difference between a phrase and a clause.
I. A phrase is a collection of words that may have nouns or verbals, but it does not have a subject doing a verb. The following are examples of phrases:

• leaving behind the dog
• smashing into a fence
• before the first test
• after the devastation
• between ignorance and intelligence
• broken into thousands of pieces
• because of her glittering smile

In these examples above, you will find nouns (dog, fence, test, devastation, ignorance, intelligence, thousands, pieces). You also have some verbals (leaving, smashing), but in no case is the noun functioning as a subject doing a predicate verb. They are all phrases.
II. A clause is a collection of words that has a subject that is actively doing a verb. The following are examples of clauses:

• since she laughs at diffident men
• I despise individuals of low character
• when the saints go marching in
• Obediah Simpson is uglier than a rabid raccoon
• because she smiled at him.

In the examples above, we find either a noun or a pronoun that is a subject (bold-print and red) attached to a predicate verb (underlined and purple) in each case:

• since she laughs at diffident men
• I despise individuals of low character
• when the saints go marching in
• Obediah Simpson is uglier than a rabid raccoon
• because she smiled at him

III. If the clause could stand by itself, and form a complete sentence with punctuation, we call the clause an independent clause. The following are independent clauses:

• I despise individuals of low character
• Obediah Simpson is uglier than a rabid racoon

We could easily turn independent clauses into complete sentences by adding appropriate punctuation marks. We might say, "I despise individuals of low character." Or we might write, "Obediah Simpson is uglier than a rabid racoon!" We call them independent because these types of clauses can stand independently by themselves, without any extra words attached, and be complete sentences.
IV. Dependent clauses have a subject doing a verb, but they have a subordinate conjunction placed in front of the clause. That subordinate conjunction means that the clause can't stand independently by itself and become a complete sentence. Instead, the dependent clause is dependent upon another clause--it can't make a complete sentence by itself, even though it has a subject doing a verb. Here are some examples of dependent clauses:

• since she laughs at diffident men
• when the saints go marching in
• because she smiled at him

These clauses simply do not form complete thoughts or sentences by themselves. Those subordinate conjunctions--since, when, and because--cause the listener to expect some extra material. The thought is incomplete. If you walked up to a friend in the dorms and said, "since she laughs at diffident men," and then walked away without adding an independent clause, the friend would be completely baffled.
It's important to understand the difference between phrases, dependent clauses, and independent clauses because many punctuation marks--such as commas, semicolons, and colons, require one or the other. Click here to move to subordinate conjunctions to learn more.

The Phrase

Recognize a phrase when you see one.

A phrase is two or more words that do not contain the subject-verb pair necessary to form a clause. Phrases can be very short or quite long. Here are two examples:

After lunch

After slithering down the stairs and across the road to scare nearly to death Mrs. Philpot busy pruning her rose bushes

Certain phrases have specific names based on the type of word that begins or governs the word group: noun phrase, verb phrase, prepositional phrase, infinitive phrase, participle phrase, gerund phrase, and absolute phrase.

Noun Phrases

A noun phrase includes a noun—a person, place, or thing—and the modifiers—either before or after—which distinguish it. The pattern looks like this:

optional modifier(s) + noun + optional modifier(s)

Here are some examples:

The shoplifted pair of jeans

Pair = noun; the, shoplifted, of jeans = modifiers.

A cat that refused to meow

Cat = noun; a, that refused to meow = modifiers.

A great English teacher

Teacher = noun; a, great, English = modifiers.

Noun phrases function as subjects, objects, and complements:

The shoplifted pair of jeans caused Nathaniel so much guilt that he couldn't wear them.

The shoplifted pair of jeans = subject.

Jerome adopted a cat that refused to meow.

A cat that refused to meow = direct object.

With her love of Shakespeare and knowledge of grammar, Jasmine will someday be a great English teacher.

A great English teacher = subject complement.

Verb Phrases

Sometimes a sentence can communicate its meaning with a one-word verb. Other times, however, a sentence will use a verb phrase, a multi-word verb, to express more nuanced action or condition. A verb phrase can have up to four parts. The pattern looks like this:

auxiliary verb(s) + main verb + verb ending when necessary

Here are some examples:

Had cleaned

Had = auxiliary verb; clean = main verb; ed = verb ending.

Should have been writing

Should, have, been = auxiliary verbs; write = main verb; ing = verb ending.

Must wash

Must = auxiliary verb; wash = main verb.

Here are the verb phrases in action:

Mom had just cleaned the refrigerator shelves when Lawrence knocked over the pitcher of orange juice.

Sarah should have been writing her research essay, but she couldn't resist another short chapter in her Stephen King novel.

If guests are coming for dinner, we must wash our smelly dog!

Prepositional Phrases

At the minimum, a prepositional phrase will begin with a preposition and end with a noun, pronoun, gerund, or clause, the "object" of the preposition.
The object of the preposition will often have one or more modifiers to describe it. These are the patterns for a prepositional phrase:

preposition + noun, pronoun, gerund, or clause

preposition + modifier(s) + noun, pronoun, gerund, or clause

Here are some examples:

On time

On = preposition; time = noun.

Underneath the sagging yellow couch

Underneath = preposition; the, sagging, yellow = modifiers; couch = noun.

From eating too much

From = preposition; eating = gerund; too, much = modifiers.

A prepositional phrase will function as an adjective or adverb. As an adjective, the prepositional phrase will answer the question Which one?
Read these examples:

The spider above the kitchen sink has just caught a fat fly.

Which spider? The one above the kitchen sink!

The librarian at the check-out desk smiles whenever she collects a late fee.

Which librarian? The one at the check-out desk!

The vegetables on Noel's plate lay untouched the entire meal.

Which vegetables? The ones on Noel's plate!

As an adverb, a prepositional phrase will answer questions such as How? When? or Where?

While sitting in the cafeteria, Jack catapulted peas with a spoon.

How did Jack launch those peas? With a spoon!

After breakfast, we piled the dirty dishes in the sink.

When did we ignore the dirty dishes? After breakfast!

Amber finally found the umbrella wedged under the passenger's front seat.

Where did Amber locate the umbrella? Under the passenger's front seat!

Infinitive Phrases

An infinitive phrase will begin with an infinitive [to + simple form of the verb]. It will often include objects and/or modifiers that complete the thought. The pattern looks like this:

infinitive + object(s) and/or modifier(s)

Here are some examples:

To slurp spaghetti

To send the document before the deadline

To gulp the glass of water with such thirst that streams of liquid ran down his chin and wet the front of his already sweat-soaked shirt

Infinitive phrases can function as nouns, adjectives, or adverbs. Look at these examples:

To avoid another lecture from Michelle on the benefits of vegetarianism was Aaron's hope for their date at a nice restaurant.

To avoid another lecture from Michelle on the benefits of vegetarianism functions as a noun because it is the subject of the sentence.

Cheryl plans to take microbiology next semester when Professor Crum, a pushover, is teaching the course.

To take microbiology next semester functions as a noun because it is the direct object for the verb plans.

The worst thing to happen during the severe thunderstorm was a lightning strike that fried Clara's computer.

To happen during the severe thunderstorm functions as an adjective because it modifies thing.

Ryan decided to mow the long grass on the front lawn to keep his neighbors from complaining to the homeowners association.

To keep his neighbors from complaining to the homeowners association functions as an adverb because it explains why Ryan mowed the lawn.

Participle Phrases

A participle phrase will begin with a present or past

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