ACT English : Correcting Grammatical Errors

Study concepts, example questions & explanations for ACT English

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Example Questions

Example Question #34 : Correcting Verb Tense 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 spokesperson noted that over the past year, a new wave of technological advances have increased the company’s profitability.

Possible Answers:

will have increased the company’s profitability.

increased the company’s profitability.

have increased the company’s profitability.

had increased the company’s profitability.

has increased the company’s profitability.

Correct answer:

has increased the company’s profitability.

Explanation:

We know that the proper tense to describe an event that happened "over the course of past year" is the present perfect, which narrows down potentially correct answer choices to either "have increased the company's profitability" or "has increased the company's profitability." 

Since the subject of the increasing event is "wave," not "advances," we should go with the answer choice that uses the singular verb—"has increased the company's profitability."

Example Question #422 : Word Usage 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.

Previously, the candidates refuse to run any negative ads against their opponents.

Possible Answers:

refusal to run

refuse to be running

refuse to run

refused to run

refusing to run

Correct answer:

refused to run

Explanation:

The underlined portion describes what happened "Previously," which indicates the verb has to be in a tense showing what happened before. The correct answer must be in the past tense, and only "refused to run" has the correct tense among the answers.

Example Question #1 : Correcting Verb Tense 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.

After Miguel left the store, he had gone to the gas station.

Possible Answers:

After Miguel was leaving the store, he had gone to the gas station.

After Miguel left the store, he will have gone to the gas station.

After Miguel left the store, he had gone to the gas station.

After Miguel left the store, he went to the gas station.

After Miguel were to have left the store, he had gone to the gas station.

Correct answer:

After Miguel left the store, he went to the gas station.

Explanation:

The original sentence uses the pluperfect verb form ("had gone to the gas station") erroneously because the event of going to the gas station happened after Miguel left the store.

Example Question #62 : Correcting Verb 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.

If I would have used the coupon, I could have saved forty dollars.

Possible Answers:

If I would have used the coupon, I could have saved forty dollars.

Forty dollars could have been saved had the coupon I had used.

If I had used the coupon, I could have saved forty dollars.

If I would have used the coupon, forty dollars could have been saved by me.

If I will have used the coupon, I could have saved forty dollars.

Correct answer:

If I had used the coupon, I could have saved forty dollars.

Explanation:

One can never say “If I would have done”. One can only say “If I had done”, which is called the past perfect verb form.

Example Question #423 : Word Usage 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.

Many parents mistakenly thinking babies should be on low-fat diets; however, fat is crucial to infants’ brain and nerve development.

Possible Answers:

Many parents mistake and think babies should be on low-fat diets; however, fat is crucial to infants’ brain and nerve development. 

Many parents mistakenly think babies should be on low-fat diets; however, fat is crucial to infants’ brain and nerve development. 

Many parents mistakenly thinking babies should be on low-fat diets; on the other hand, fat is crucial to infants’ brain and nerve development. 

Many parents mistakenly thinking babies should be on low-fat diets; however, fat is crucial to infants’ brain and nerve development.

Many parents mistakenly had thought babies should be on low-fat diets; however, fat is crucial to infants’ brain and nerve development. 

Correct answer:

Many parents mistakenly think babies should be on low-fat diets; however, fat is crucial to infants’ brain and nerve development. 

Explanation:

The word "thinking" is acting like a participle in the original sentence, making the first clause lack a verb. Changing "Many parents mistakenly thinking" to "Many parents mistakenly think" corrects the sentence's error.

Example Question #1 : Correcting Verb Tense 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.

When I discovered that my mom hid chocolate bars in her top drawer, I take them all and ate them.

Possible Answers:

When I discovered that my mom hid chocolate bars in her top drawer, I had taken them all and eaten them. 

When I discovered that my mom hid chocolate bars in her top drawer, I take them all and ate them.

When I discovered that my mom hid chocolate bars in her top drawer, I took and ate them all.  

When I made the discovery that my mom hid chocolate bars in her top drawer, I was taking them all and ate them. 

When I was discovering that my mom hid in her top drawer chocolate bars, I took them all and ate them all. 

Correct answer:

When I discovered that my mom hid chocolate bars in her top drawer, I took and ate them all.  

Explanation:

The original statement uses the wrong verb tense for the verb "take"; it should be "took". The correct answer is also more concise than the original.

Example Question #281 : Correcting Word Usage 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.

Until recently, scientists were believing that squids of giant size were only a myth of the creation of sailors.

Possible Answers:

Until recently, scientists believed that giant squids were only a myth created by sailors. 

Until recently, scientists were believing that squids of giant size were only a myth of the creation of sailors.

Until most recently, scientists were of the belief that giants squids, a myth, created by sailors.

Until recently, sailors were creating a myth of giants squids, of which scientists believed. 

Until recent times, it was believed by scientists that sailors created giants squids in their myths that they told. 

Correct answer:

Until recently, scientists believed that giant squids were only a myth created by sailors. 

Explanation:

The original statement erroneously uses the past progressive verb tense "were believing" instead of "believed." The correct answer is also less awkward and more concise than the original.

Example Question #425 : Word Usage 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 students were shocked learning of their teacher's past life as a rock musician.

Possible Answers:

were shocked to learn

were shocked learning

were shocking to learn

were shocking to learn

were shocking learning

Correct answer:

were shocked to learn

Explanation:

The use of the verb "learn" is essentially as a modifier of the students "shock." This means that "learning" must be turned into a form that will describe why the students were "shocked." "Were shocked to learn," using an infinitive form, is the best choice among the answers.

Example Question #281 : Correcting Word Usage 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.

If she arrives empty handed, I was angry with her.

Possible Answers:

I had been angry

I am angry

I anger

I was angry

I will be angry

Correct answer:

I will be angry

Explanation:

The sentence features a conditional statement, "If she arrives empty handed," that explains the underlined portion of the sentence. This means the verb tense in the underlined portion should be in the future, as it will only occur once another action has taken place. "I will be angry," is the correct answer choice.

Example Question #282 : Correcting Word Usage 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.

"Victoria" is a name that sounds throughout history since the nineteenth century.

Possible Answers:

sounding throughout history

has sounded throughout history

sounds through history

sounding through history

sounds throughout history

Correct answer:

has sounded throughout history

Explanation:

The use of the phrase "since the nineteenth century" indicates that the appropriate verb form of "sound" must be the past tense, as it describes things taking place previously. The correct answer choice is "has sounded throughout history," as it is the only choice in the past tense.

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