The basic concept behind parallelism is pretty simple: ideas with the same importance
and function—nouns, verbs, phrases, or whatever—should be expressed in the same grammatical
form. There are two types of constructions that test parallel structure on the GMAT:
Lists of items or a series of events
Two-part constructions such as from X to Y, both X and Y, either X or Y, prefer X to Y, not only X but also Y, and as much X as Y
Parallel Construction
Prepositions, articles, and auxiliaries can begin a list without needing to be repeated
throughout. But if they are repeated, they must be in every element of the list.
Correct: “Will you travel by plane, car, or boat?”
Also correct: “Will you travel by plane, by car, or by boat?”
Incorrect: “Will you travel by plane, car, or by boat?”
Analogies, similes, and other comparisons all require parallel structure.
He was as brazen as his brother was diffident.
Seeing her smile was like feeling the warmth of the sun.
Parallelism Exercise
Answers follow this exercise.
For each of the following sentences, put parallel items into the same form.
The city’s decay stems from governmental mismanagement, increasing unemployment, and many businesses are relocating.
Tourists’ images of France range from cosmopolitan to the pastoral.
Excited about visiting New York, Jasmine minded neither riding the subways nor to cope with the crowded sidewalks.
To visualize success is not the same as achieving it.
I remember my aunt making her own dandelion wine and that she played the fiddle.
In my favorite Armenian restaurant, the menu is fascinating and the entrées exquisite.
Parallelism Exercise: Answers
“[M]any businesses are relocating” should be written as business relocation to parallel “governmental mismanagement” and “increasing unemployment.”
If you say “the pastoral,” you have to say thecosmopolitan. Or you could say . . . from cosmopolitan to pastoral.
To parallel “riding,” you need coping—not “to cope.”
“To visualize” should be visualizing to parallel “achieving.” Alternately, “achieving” could be written as toachieve to be in parallel with “[t]o visualize.”
Change “my aunt making” to that my aunt made to be parallel with “that she played.” Another possibility is to change “that she played” to playing to match “making.”
“[T]he menu” is singular, but “entrées” is plural, so you must say are exquisite to parallel the phrase “is fascinating.”
Applying the Kaplan Method: Parallelism
Now let’s use the Kaplan Method on a Sentence Correction question dealing with parallelism:
Pablo Picasso’s genius is only fully revealed when one considers the various facets
of his work as they developed through many artistic phases, beginning with his Red
period, continuing through his Blue period, and finishing with his period of Cubism.
period, continuing through his Blue period, and finishing with his period of Cubism
period, continuing through his Blue period, and finishing with his Cubist period
period, and continuing through his Blue period and his Cubist period
period phase, his Blue period phase, and his phase of Cubism
period, his Blue period, and his period of Cubism
Step 1: Read the Original Sentence Carefully, Looking for Errors
The original sentence contains a list, so your Pattern Recognition skills should tell
you to check for parallel structure. Because the first two items in the list contain
“Red period” and “Blue period,” you should expect the third item in the list to follow
the adjective-noun pattern and contain “Cubist period.” Instead, this sentence ends
with “period of Cubism,” breaking the pattern and making choice (A) incorrect.
Step 2: Scan and Group the Answer Choices
Choices (B) and (C) end with “his Cubist period,” while (A) and (E) reference “his period of Cubism” and (D) ends with the similar construction “his phase of Cubism.” You have a 3-2 split.
Step 3: Eliminate Choices Until Only One Remains
You’ve established that (A) is incorrect, so eliminate (D) and (E) as well. This leaves only (B) and (C) with the correct parallel construction “Cubist period.” The list should also contain
the parallel phrases “beginning . . . continuing . . . and finishing.” (C) is wrong because it drops “finishing,” which alters the meaning and also destroys
the parallel structure. Only (B) exhibits parallel structure throughout the list and is the correct answer. Read it back into the sentence to confirm there are no errors:
Pablo Picasso’s genius is only fully revealed when one considers the various facets
of his work as they developed through many artistic phases, beginning with his Red
period, continuing through his Blue period, and finishing with his Cubist period.
Practice Set: Parallelism
Although carotene and xanthophyll are present in leaves throughout the year, these pigments are not usually visible until the days shorten, temperature drops, and the breaking down of the chlorophyll in the leaves reveals the yellow and orange colors.
the days shorten, temperature drops, and the breaking down of the chlorophyll in the leaves reveals
the days
shorten, the temperature drops, and the chlorophyll breakdown in the leaves is to reveal
the days shorten, the temperature drops, and the chlorophyll in the leaves
breaks down, revealing
the days are shorter, the temperature is lower, and less chlorophyll in the leaves due to breakdown reveals
the days shorten, the temperature drops, and chlorophyll breaks down, revealing in the leaves
By conducting a national study of opioid abuse on college campuses, researchers hope to determine where students purchase opioids, how frequently students abuse opioids on average, and which college stressors most commonly contribute to opioid abuse among students.
which college stressors most commonly contribute to opioid abuse among students
which are the college stressors common to students who are likely to be turning to opioid abuse
the common stressors of college that are likely to contribute to opioid abuse among students
the stressors of college common among students who turn to opioid abuse
the types of college stressors that are common to students who are likely to turn to opioid abuse
Although deciding the outcome of an election by chance may seem antiquated, a toss of a coin, playing a round of poker, and drawing straws are all methods that have been used within the span of 15 years to determine the winner of a deadlocked election somewhere in the United States.
a toss of a coin, playing a round of poker, and drawing straws are all methods that have been used
the tossing of a coin, playing a round of poker, and drawing straws are all methods that have been used
tossing a coin, playing a round of poker, and drawing straws are all methods that would have been used
a toss of a coin, playing a round of poker, and drawing straws are all methods that had been used
tossing a coin, playing a round of poker, and drawing straws are all methods that have been used
Advanced Practice Set: Parallelism
According to one nutrition consultant, healthy adults should not hesitate to consume eggs, since this food contains six grams of high-quality protein, all nine essential amino acids, vitamins B12 and D, and is a source of various other nutrients as well.
vitamins B12 and D, and is a source of various other nutrients
vitamins B12 and D, and including various other nutrients
vitamins B12 and D, and various other nutrients are included
and vitamins B12 and D, and it is a source of various other nutrients
the vitamins B12 and D, and provides various other nutrients
In Cold Bloodis not only often considered Truman Capote’s most popular novel but also the first “nonfiction novel,” a literary genre that uses techniques of fictional storytelling to depict actual people and events.
is not only often considered
is as often not only considered
is often considered not only
not only is often considered to be
not only is considered as often
The self-portraits of Frida Kahlo can be considered both introspective explorations of a psyche that ranged free, unbounded by historical notions of cultural identity and feminine, as well as subverting traditional European portraiture.