ACT English: Verb Forms and Tense Shifts

Mastering verb tense consistency is a non-negotiable skill for a high ACT English score. The test systematically evaluates your ability to maintain a logical time frame, ensuring your writing is clear and professional.

Understanding Verb Tense and Time Frame

Every verb tells you not just what happens, but when it happens. The verb tense is the form of the verb that indicates this time. The core tenses you must know are the simple past, present, and future (e.g., walked, walks, will walk), along with their perfect forms (e.g., had walked, has walked, will have walked). Before you can assess if a tense is wrong, you must identify the passage's established time frame. Ask yourself: Is the author describing events that happened in the past, are happening in the general present, or are predicting the future? Most ACT passages are written in either the simple past or the simple present. Your first task on any verb question is to scan the surrounding sentences—not just the underlined portion—to lock in this primary timeframe.

For example, if a passage begins, "Last summer, I worked at a bakery," the primary timeframe is the past. Subsequent verbs should generally remain in the past tense unless there's a logical reason to shift. A logical shift might be a present-day commentary: "Last summer, I worked at a bakery. I learned so much, and I still use those skills today." The shift to "use" is justified because it describes an ongoing, general truth.

Identifying and Correcting Inappropriate Tense Shifts

An inappropriate tense shift occurs when the verb tense changes without a logical, rhetorical reason. These errors create confusion about the sequence of events. On the ACT, you will encounter two types of shifts: within a single sentence and between consecutive sentences.

Within a sentence: "Yesterday, I walk to the store and bought milk." The shift from present ("walk") to past ("bought") is illogical and jarring. Correct to: "Yesterday, I walked to the store and bought milk."

Between sentences: "We visited the museum. Then, we go to the park." The second sentence illogically shifts to the present tense. Correct to: "Then, we went to the park."

Your strategy is straightforward: 1) Identify the primary tense of the narrative or discussion. 2) Check the underlined verb and the verbs immediately before and after it. 3) Change only the verb that creates an unjustified shift. The correct answer will almost always maintain consistency with the surrounding, non-underlined verbs.

Selecting the Correct Irregular Verb Form

The ACT loves to test irregular verbs, which do not form their simple past and past participle by simply adding "-ed." Using an incorrect form (e.g., "I have went" instead of "I have gone") is always wrong. You must memorize the most common irregulars. Think in triads: present / simple past / past participle (e.g., begin / began / begun; swim / swam / swum; drink / drank / drunk).

A frequent trap involves confusing the simple past with the past participle. The past participle always needs a helping verb like has, have, had, is, was, or were.

• Incorrect: "She had ran home." (Ran is simple past).
• Correct: "She had run home." (Run is the past participle).
• Incorrect: "The letter was wrote by him."
• Correct: "The letter was written by him."

When you see an underlined verb that is irregular, quickly run through its three forms in your head to ensure the correct one is being used in context.

Ensuring Subject-Verb Agreement with Complex Subjects

Even with tense mastered, you must ensure the verb agrees in number with its subject. This becomes tricky with compound subjects and collective nouns.

For compound subjects joined by and, they are almost always plural and require a plural verb. "The book and the movie are exciting." However, if the compound subject refers to a single unit, it is singular. "Macaroni and cheese is my favorite dish."

For compound subjects joined by or or nor, the verb agrees with the subject closer to it. "Neither the teacher nor the students were aware." / "Neither the students nor the teacher was aware."

Collective nouns (like team, family, group, committee) are singular when acting as one unit. "The committee votes on the issue tomorrow." They are only plural if the sentence clearly emphasizes the individual members acting separately. This is rare on the ACT. The test usually treats collective nouns as singular.

The key is to ignore prepositional phrases that come between the subject and verb. Find the true subject. For example, "The collection of rare coins is valuable." The subject is the singular "collection," not "coins."

Common Pitfalls

1. Being Misled by an Intermediate Tense: A passage's primary timeframe is past, but a dependent clause may correctly use the past perfect ("had done") to indicate an earlier past. Don't mistake this necessary sequence-of-tenses for an error. For example, "She realized she had lost her keys." The past perfect "had lost" correctly indicates the losing happened before the realizing.

1. Overcorrecting to the Present Tense: Because we often speak in the present, test-takers sometimes incorrectly change a correctly past-tense verb to present. Trust the non-underlined text in the passage as your guide, not your conversational habits.

1. Misidentifying the Subject with "There" or "Here": In sentences beginning with "There is/are" or "Here is/are," the subject comes after the verb. Make the verb agree with this delayed subject. "There are many reasons for this." (Subject: "reasons").

1. Treating Indefinite Pronouns as Plural: Words like everyone, anyone, each, either, and neither are singular. "Each of the players is ready." This is a frequently tested rule.

Summary

• Lock in the primary time frame from the non-underlined portions of the passage. Your goal is consistent, logical tense, not arbitrarily changing every verb to present or past.
• An inappropriate tense shift is a change in verb tense without a justifiable reason, such as moving from describing a past event to stating a general present truth.
• Memorize the principal parts of common irregular verbs (present/past/past participle). The past participle always needs a helper verb.
• For subject-verb agreement, find the true subject, ignoring interrupting phrases. Remember: compound subjects with and are usually plural; collective nouns are usually singular; and indefinite pronouns like everyone are singular.
• On the ACT, use process of elimination. Identify obvious errors in tense, form, or agreement in the answer choices to narrow down your selection efficiently.