PSAT Writing : Correcting Sentence Fragment and Sentence Combination Errors

Study concepts, example questions & explanations for PSAT Writing

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Example Questions

Example Question #171 : Other Phrase, Clause, And Sentence Errors

The entire class had to conduct a debate between historical figures, acted out each part based on extensive research.

Possible Answers:

acting out each part based on extensive research.

acted out each part basing it on extensive research.

acted out each part basing on extensive research.

acted out every part based on extensive research.

acted out each part based on extensive research.

Correct answer:

acting out each part based on extensive research.

Explanation:

The use of the verb form "acted" makes the final part of the sentence an incomplete thought not connected to the first part of the sentence. The secondary clause must be joined with the main body of the sentence, either with a conjunction or a verb form that can connect the two. "Acting out each part based on extensive research," using the past participle, is the correct answer choice.

Example Question #21 : Correcting Sentence Fragment And Sentence Combination Errors

Choose the best way to rephrase the underlined portion of the sentence. One of the answer choices repeats the original phrasing.

The man who waved goodbye and headed back into the cold, wintry night.

Possible Answers:

The man who waved goodbye and headed

 

The man who waved goodbye, heading

 

Waving goodbye, the man who headed

The man waved goodbye and headed

The man waving goodbye, headed

Correct answer:

The man waved goodbye and headed

Explanation:

The relative pronoun “who” makes this sentence into a fragment, because there is no longer a predicate. The best answer simply removes “who.”

Example Question #181 : Correcting Phrase, Clause, And Sentence Errors

Replace the underlined portion with the answer choice that results in a sentence that is clear, precise, and meets the requirements of standard written English.

The boy always gave his schoolwork his best shot but he never could make himself into a good student.

Possible Answers:

The boy always gave his schoolwork his best shot but he never could making himself into a good student.

The boy always gives his schoolwork his best shot but he never could make himself into a good student.

The boy always gave his schoolwork his best shot, but he never could make himself into a good student.

The boy always gave his schoolwork his best shot, he never could make himself into a good student.

The boy always gave his schoolwork his best shot but he never could make himself into a good student.

Correct answer:

The boy always gave his schoolwork his best shot, but he never could make himself into a good student.

Explanation:

The sentence is written as a run-on sentence, as it is two complete thoughts not properly combined into a compound sentence. A compound sentence needs to have its two independent clauses joined by either a conjunction and a comma, or a semicolon. The only answer choice to employ either of these options is "The boy always gave his schoolwork his best shot, but he never could make himself into a good student."

Example Question #111 : Correcting Other Phrase, Clause, And Sentence Errors

Replace the underlined portion with the answer choice that results in a sentence that is clear, precise, and meets the requirements of standard written English. One of the answer choices reproduces the underlined portion as it is written in the sentence.

The researchers found that humans can detect millions of different odors, dogs, in contrast, can detect only a few thousand.

Possible Answers:

detect millions of different odors; whereas dogs, in contrast, can detect only a few thousand

detect millions of different odors; dogs, in contrast, can detect only a few thousand

detect millions of different odors; and dogs, in contrast, can detect only a few thousand

detect millions of different odors, dogs, in contrast, can detect only a few thousand

detect millions of different odors,  dogs can detect only a few thousand in contrast

Correct answer:

detect millions of different odors; dogs, in contrast, can detect only a few thousand

Explanation:

The original text contains a run-on sentence. That means that the original text places two complete sentences side by side, separated only by a comma. Answer choice "detect millions of different odors, dogs can detect only a few thousand in contrast" also results in a run-on sentence.

To fix a run-on sentence, you can either change the comma to a semicolon, as in answer choice "detect millions of different odors; dogs, in contrast, can detect only a few thousand," or you can insert a conjunction after the comma.

Answer choices "detect millions of different odors; whereas dogs, in contrast, can detect only a few thousand" and "detect millions of different odors; and dogs, in contrast, can detect only a few thousand" are incorrect because they make both of these changes—changing the comma to a semicolon and inserting a conjunction— instead of just one or the other.

Example Question #171 : Phrase, Clause, And Sentence Errors

Replace the underlined portion with the answer choice that results in a sentence that is clear, precise, and meets the requirements of standard written English. One of the answer choices reproduces the underlined portion as it is written in the sentence.

The planes were designed to last for decades but unfortunately they proved to have mechanical problems immediately.

Possible Answers:

The planes were designed to last for decades but unfortunately they proved to have mechanical problems immediately.

The planes were designed to last for decades so unfortunately they proved to have mechanical problems immediately.

The planes were designed to last for decades and unfortunately they proved to have mechanical problems immediately.

The planes were designing to last for decades but unfortunately they proving to have mechanical problems immediately.

The planes were designed to last for decades, but unfortunately they proved to have mechanical problems immediately.

Correct answer:

The planes were designed to last for decades, but unfortunately they proved to have mechanical problems immediately.

Explanation:

The sentence is written as a compound sentence, or a sentence composed of two complete thoughts joined together to show their relationship. All compound sentences must be joined by either a semicolon or a conjunction and a comma. The only answer choice that does this is "The planes were designed to last for decades, but unfortunately they proved to have mechanical problems immediately."

Example Question #22 : Sentence Fragment And Sentence Combination Errors

Replace the underlined portion with the answer choice that results in a sentence that is clear, precise, and meets the requirements of standard written English. One of the answer choices reproduces the underlined portion as it is written in the sentence.

Airplane travel is still a relatively recent phenomenon just a little more than a century has passed since the first flight.

Possible Answers:

recent phenomenon just a little

recent phenomenon as just a little

recent phenomenon a little

recent phenomenon, a little

recent phenomenon; just a little

Correct answer:

recent phenomenon; just a little

Explanation:

The sentence is a compound sentence, or two sentences put together to show their relationship to each other. All such sentences need to have their two parts separated by either a comma and a conjunction or a semi-colon. "Recent phenomenon; just a little" is the only answer choice that does either.

Example Question #451 : Improving Sentences

In the following question, please choose the best sentence improvement.

During the fireworks display, the colors that filled the sky like starbursts.

Possible Answers:

the colors filling the sky

the colors filled the sky

the colors will fill the sky

the colors, which filled the sky

the colors that filled the sky

Correct answer:

the colors filled the sky

Explanation:

As it is written, the sentence is a fragment because of the word that. The sentence is therefore corrected by removing that.

Example Question #182 : Other Phrase, Clause, And Sentence Errors

In the following question, please choose the best sentence improvement.

Going to college can lead to some fantastic careers, young adults who do not pursue additional education can find fulfilling and exciting jobs as well.

Possible Answers:

Going to college can lead to some fantastic careers

Since going to college can lead to some fantastic careers

Unless going to college can lead to some fantastic careers

If going to college can lead to some fantastic careers

Although going to college can lead to some fantastic careers

Correct answer:

Although going to college can lead to some fantastic careers

Explanation:

In its current state, this is a run-on sentence because it has two independent clauses that are not joined with a conjunction or semicolon. In this answer choice, the appropriate conjunction is added to the introductory clause, making the introductory clause dependent and the sentence grammatically correct.

Example Question #183 : Other Phrase, Clause, And Sentence Errors

Replace the underlined portion with the answer choice that results in a sentence that is clear, precise, and meets the requirements of standard written English.

Mary Shelley, English novelist and author of Frankenstein, and who died from a brain tumor when she was 53 years old.

Possible Answers:

she has died

she died

and who has died

and who died

died

Correct answer:

died

Explanation:

Only the verb in the past tense is necessary here. If “who” is used, the second part of the sentence becomes a relative clause modifying the subject, leaving us with a fragment—a subject, an appositive phrase, and a relative clause, but no predicate. The answers "and who died" and "and who has died" are both incorrect for the same reason; the answers "she died" and "she has died" introduce the pronoun "she," which is unnecessary (and grammatically incorrect) because the sentence already has a subject.

Example Question #141 : Correcting Other Phrase, Clause, And Sentence Errors

Some politicians believe that the role of government should be limited; others claiming that a strong government can improve economic growth and fairness.

Possible Answers:

limited, others with the claim that

limited; others claim that

limited and others claiming that

limited; others claiming that

limited; however, there are others who claim that

Correct answer:

limited; others claim that

Explanation:

The initial sentence contains a sentence fragment. The correct answer is the most concise and most complete.

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