Chapter 18. Exercise S1-4

18.1 Section Title

true
true
You must read each slide, and complete any questions on the slide, in sequence.
Exercise S1-4
Parallelism
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The sentences in this exercise are all taken from one paragraph about tsunamis. The following is the first sentence in the paragraph, written in parallel structure: "Tsunamis, or tidal waves, not only can cause terrible property damage but also can destroy human life."

In each pair, click on the better version of the passage, the one that does not contain errors in parallelism.

Click Submit after each question to see feedback and to record your answer. After you have finished every question, your answers will be submitted to your instructor’s gradebook. You may review your answers by returning to the exercise at any time. (An exercise reports to the gradebook only if your instructor has assigned it.)

Example

Question 18.1

Correct. The -ing forms killing and displacing are parallel.
For more help, see section S1.
Sorry. For parallelism, killing should be paired with another -ing form: killing . . . and displacing. . . .
For more help, see section S1.
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Question 18.2

Correct. The two parts of the correlative conjunction either . . . or are followed by similar grammatical forms, the prepositional phrases under the coastal land and beneath the ocean floor.
For more help, see section S1.
Sorry. The two parts of the correlative conjunction either . . . or should be followed by similar grammatical forms. In this case, either is followed by a verb and a prepositional phrase, but or is followed only by a prepositional phrase. Moving the word either directly before the first prepositional phrase makes the two parts parallel.
For more help, see section S1.
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Question 18.3

Correct. The noun explosion is parallel to the noun eruption.
For more help, see section S1.
Sorry. The when clause is not parallel to the noun explosion. For parallelism, both elements should be nouns: explosion and eruption.
For more help, see section S1.
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Question 18.4

Correct. To happen in the ocean is parallel to to occur inland.
For more help, see section S1.
Sorry. Elements in a comparison with than should be in parallel grammatical form. One occurring inland is not parallel to to happen in the ocean.
For more help, see section S1.
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Question 18.5

Correct. And joins parallel noun phrases: deep water and a vast surface.
For more help, see section S1.
Sorry. The participial phrase having a vast surface is not parallel to the noun phrase deep water.
For more help, see section S1.
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Question 18.6

Correct. The items in the series are parallel: reaches, stretches, and covers.
For more help, see section S1.
Sorry. The third item in the series is not parallel to the first two: reaching . . . , stretching . . . , and which covers. . . .
For more help, see section S1.
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Question 18.7

Correct. The two parts of the correlative conjunction both . . . and are followed by nouns: earthquakes and tsunamis.
For more help, see section S1.
Sorry. The two parts of the correlative conjunction both. . . and should be followed by similar grammatical forms. In this case, placing both before the two nouns earthquakes and tsunamis fixes the problem.
For more help, see section S1.
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Question 18.8

Correct. Evacuating is parallel to staying.
For more help, see section S1.
Sorry. Elements being compared with than should be in parallel grammatical form. Evacuating is not parallel to to stay.
For more help, see section S1.
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Question 18.9

Correct. The two parts of the correlative conjunction not only . . . but also are followed by prepositional phrases: about the possibility . . . and about actions. . . .
For more help, see section S1.
Sorry. The two parts of the correlative conjunction not only . . . but also should be followed by similar grammatical forms. In this case, not only is followed by the verb be informed, and but also is followed by a prepositional phrase, about actions. . . . Placing not only before the prepositional phrase about the possibility . . . corrects the problem.
For more help, see section S1.
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Question 18.10

Correct. Lying beneath the ocean floor is parallel to running parallel to the coast.
For more help, see section S1.
Sorry. That are under the ocean floor is not parallel to running parallel to the coast. In the correct version, the paired items are both -ing phrases.
For more help, see section S1.
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