Smarthinking Writer's Handbook

Chapter 5, Lesson 6

Incomplete Sentences: Fragments


Objective

In this lesson, you'll learn what a sentence fragment is, the three most common causes for sentence fragments, and how to eliminate sentence fragments in your writing.

What Is a Fragment?

A sentence fragment is an incomplete sentence. A fragment occurs when a sentence is missing either a subject or a predicate, or when a dependent phrase or clause is mistaken for a sentence.

A writer sometimes uses a sentence fragment to create a particular effect. The purposefully written fragment can be especially powerful when the writer usually writes in complete sentences and rarely uses the fragment. However, student writers should always try to compose complete sentences when writing essays for their classes, unless their instructor specifically tells them that the occasional fragment-for-effect is acceptable.

Fragments Due To Missing Subjects

A complete sentence needs to contain a subject, which is the word or words that tells who or what the sentence is about. A subject consists of a noun or a pronoun.

If a "sentence" is missing its subject, the main "who" or "what" the sentence is about will be unknown:

Swam in the pool.

Because there's no subject in this "sentence," readers don't know who or what swam in the pool. To eliminate this sentence fragment and to create a complete sentence, the subject needs to be supplied:

Her niece swam in the pool.

Fragments Due To Missing Predicates

A complete sentence also needs to contain a predicate, which is the word or words in a sentence that express the action or state of being of the subject. A predicate consists of a verb.

If a "sentence" is missing its predicate, the main action or being of the subject will be unknown:

Her niece in the pool.

Because there's no predicate in this "sentence," readers don't know what the niece is doing or being in the pool. To eliminate this sentence fragment and to create a complete sentence, the predicate needs to be supplied:

Her niece swam in the pool. (verb of action)

Her niece was in the pool. (verb of being)

Fragments Due to Dependent Phrases or Clauses

A complete sentence needs to contain at least one independent clause, which consists of a subject, a predicate, and an appropriate mark of punctuation. If a sentence consists solely of a dependent phrase or clause, it will be incomplete.

A dependent phrase is a group of words that's missing either a subject or a predicate:

Skipped down the street. (no subject)

Her toothy grin. (no predicate)

Because a dependent phrase is missing one of the essential parts of a sentence, it will always be a fragment.

A dependent clause, however, has both a subject and a predicate. And yet, because it begins with a subordinating element, it is dependent upon a separate independent clause to be complete.

Because she skipped down the street.

Although her toothy grin was wide.

Even though each clause contains a subject ("she" and "grin") and a predicate ("skipped" and "was"), the subordinating words "because" and "although" make both examples fragments. To make these fragments into complete sentences, a separate independent clause must be connected:

Because she skipped down the street, her shoes became scuffed.
Her shoes became scuffed because she skipped down the street.

Although her toothy grin was wide, it was crooked.
Her toothy grin was crooked although it was wide.

The first sentence now is complete because the fragment has been connected to an independent clause (her shoes became scuffed) that explains the result of the action. The second sentence also is complete because the fragment has been connected to an independent clause (it was crooked) that explains the other side of the contrast.

Note: When the dependent phrase/clause comes before the independent clause, a comma must follow the dependent clause. When the dependent phrase/clause comes after the independent clause, no comma is needed.

Eliminating Sentence Fragments

There are four basic ways to eliminate a sentence fragment:

  • Add the missing subject
  • Add the missing predicate
  • Connect the dependent phrase or clause to an existing independent clause
  • Rewrite the fragment as a complete sentence

(1) Adding the Missing Subject
When a fragment exists because the subject of the sentence is missing, supply the necessary subject — the noun or pronoun that tells who or what the sentence is about:

Jumped on the trampoline.
(fragment: no subject)

The young girls next door jumped on the trampoline.
(complete sentence created by adding "who" did the jumping)

(2) Adding the Missing Predicate
When a fragment exists because the predicate of the sentence is missing, supply the necessary predicate—the verb that tells the action or state of being of the subject:

The young girls next door on the trampoline.
(fragment: no predicate)

The young girls next door jumped on the trampoline.
(complete sentence created by adding the action of the girls)

(3) Connecting the Dependent Phrase or Clause to an Existing Independent Clause

When a fragment is a dependent phrase or clause, connect it to an existing independent clause (if connecting the two makes reasonable sense):

At the beginning. All went well for the business.
(fragment: "at the beginning" is a dependent phrase)

At the beginning, all went well for the business. (complete sentence created by connecting the fragment to an existing independent clause)

Because it happened at the beginning. All went well for the business.
(fragment: "because it happened at the beginning" is a dependent clause)

Because it happened at the beginning, all went well for the business.
(complete sentence created by connecting the fragment to an existing independent clause)

(4) Rewriting the Fragment as a Complete Sentence
When a fragment exists, regardless of the reason, it can be set aside, or "scrapped," and the idea can be rewritten as an entirely new yet complete sentence:

At the beginning went well for the business.
(fragment)

The business experienced its most profitable period during its first few weeks.
(complete sentence)

Therefore, if the first three methods don't seem to be useful in helping you eliminate fragments in your writing, try this last one: Keep in mind that your new, complete sentence needs to contain a subject, a predicate, and an appropriate mark of punctuation.

Exercise 1: Identify the following as either complete sentences or fragments.

1. Having a dental appointment used to be a terrible experience for Susie.

Complete
Fragment

2. Either the dentist would try to fill a cavity.

Complete
Fragment

3. Without numbing the tooth.

Complete
Fragment

4. Or would poke and prod her gums until they bled for hours.

Complete
Fragment

5. However, the dental office she found in her college's local community was just the opposite.

Complete
Fragment

6. The dentist gentle.

Complete
Fragment

7. Always asking whether he was causing her any pain.

Complete
Fragment

8. And the hygienist explained every step of the cleaning process.

Complete
Fragment

9. Even allowing her to examine the tools used.

Complete
Fragment

10. Now, a dental appointment was an experience Susie didn't dread.

Complete
Fragment

Exercise 2: Using the examples from Exercise 1, identify the reason for each fragment — missing subject, missing predicate, dependent phrase, dependent clause.

2. Either the dentist would try to fill a cavity.

Missing Subject
Missing Predicate
Dependent Phrase
Dependent Clause

3. Without numbing the tooth.

Missing Subject
Missing Predicate
Dependent Phrase
Dependent Clause

4. Or would poke and prod her gums until they bled for hours.

Missing Subject
Missing Predicate
Dependent Phrase
Dependent Clause

6. The dentist gentle.

Missing Subject
Missing Predicate
Dependent Phrase
Dependent Clause

7. Always asking whether he was causing her any pain.

Missing Subject
Missing Predicate
Dependent Phrase
Dependent Clause

9. Even allowing her to examine the tools used.

Missing Subject
Missing Predicate
Dependent Phrase
Dependent Clause

Summary
Sentence fragments are incomplete sentences caused by a missing subject or a missing predicate, or by mistaking a dependent phrase or clause for a complete sentence. Supplying the missing subject or predicate, connecting the dependent phrase or clause to an existing independent clause, or rewriting the sentence entirely can eliminate these fragments. As writers, it's important to be able to identify and eliminate fragments because they cause readers confusion. In fact, being able to eliminate fragments will help you to present your ideas in complete sentences that are easy for readers to comprehend.