ACT English • Conventions of Standard English

Verb Tense

Master the twelve English verb tenses to boost your ACT English score and write with precision.

ACT preparation illustration with a sectioned test book, timer, and target
Inside this lesson 9 sections 5 questions 6 figures

SECTION 1

Historical Context & Motivation

Every language needs a way to tell listeners when something happens. In English, we accomplish this primarily through verb tense — the form a verb takes to indicate whether an action occurred in the past, is happening now, or will take place in the future. The English tense system didn't appear overnight; it evolved over centuries as the language absorbed influences from Latin, French, and Germanic roots. Understanding this evolution helps you see why certain tense rules feel intuitive while others seem frustratingly arbitrary.

~450 CE • Old English Emerges

Anglo-Saxon settlers bring Germanic verb forms to Britain. Old English relies mainly on two tenses — present and past — with no auxiliary-verb constructions for future or perfect aspects.

~1100 • Norman Influence & Middle English

After the Norman Conquest, French and Latin vocabulary floods English. Writers begin using 'have' + past participle to form perfect tenses, and 'shall/will' starts marking the future.

~1500 • Early Modern English Codifies Tenses

Shakespeare's era sees the progressive ('be' + -ing) forms gain popularity. Grammarians begin categorizing tenses more formally, influenced by Latin grammar textbooks.

1762 • Lowth's Grammar

Bishop Robert Lowth publishes A Short Introduction to English Grammar, one of the first prescriptive grammars that lays out explicit rules for tense usage and consistency — many of which still shape standardized testing today.

Present • Standardized Testing Era

The ACT English section tests your ability to maintain tense consistency and choose the correct tense based on context clues within a passage.

The central question that verb tense addresses on the ACT is straightforward: Does the verb form in this sentence accurately reflect when the action occurs, and is it consistent with the tenses used throughout the passage? To answer that question confidently, you need to know the twelve tenses, recognize context clues that signal which tense is correct, and spot shifts that break consistency.

SECTION 2

Core Principles of Verb Tense

Before diving into individual tenses, it helps to understand the framework. English verbs operate along two dimensions: time (past, present, future) and aspect (simple, progressive, perfect, perfect progressive). Combining these two dimensions gives us the twelve verb tenses of English. The ACT doesn't expect you to label each tense by name, but it absolutely expects you to use them correctly.

1

Time Frame

Every verb is anchored to a time frame: past, present, or future. Context clues like dates, signal words ('yesterday,' 'now,' 'tomorrow'), and the tenses of surrounding verbs establish this frame.
2

Aspect

Aspect describes how the action unfolds. Simple = completed or habitual; progressive = ongoing; perfect = completed before another time; perfect progressive = ongoing up to another time.
3

Tense Consistency

Within a passage or paragraph, verbs should remain in a consistent tense unless there is a logical reason to shift — for example, narrating a past event that still has present-day relevance.
4

Context Clues

The ACT embeds signal words and phrases in the passage — 'since 1990,' 'by the time,' 'currently' — that point you to the correct tense. Train yourself to spot these before evaluating the answer choices.
5

Sequence of Tenses

When a sentence describes two events at different times, the sequence of tenses rule dictates that the earlier event uses a 'further back' tense. For example, past perfect signals an event completed before another past event.

SECTION 3

The Twelve Tenses at a Glance

The diagram below maps all twelve English verb tenses across the two dimensions of time (horizontal axis) and aspect (vertical axis). Each cell shows the tense name and an example using the verb 'write.' Study this grid — it is the single most important reference for verb tense questions on the ACT.

PASTPRESENTFUTURESimpleProgressivePerfectPerfectProgressiveSimple PastShe wroteSimple PresentShe writesSimple FutureShe will writePast ProgressiveShe was writingPresent ProgressiveShe is writingFuture ProgressiveShe will be writingPast PerfectShe had writtenPresent PerfectShe has writtenFuture PerfectShe will have writtenPast Perf. ProgressiveShe had been writingPres. Perf. ProgressiveShe has been writingFut. Perf. ProgressiveShe will have been writing
The twelve English verb tenses arranged by time (columns) and aspect (rows). Purple borders indicate past, cyan indicates present, and amber indicates future.

Notice that the top row — the simple tenses — are the most commonly tested on the ACT. The perfect tenses (third row) appear whenever the passage describes events that happened before other events. The progressive and perfect progressive forms show up less frequently, but when they do, they are often the trap that catches students off guard. Familiarize yourself with the helper verbs in each cell: had signals past perfect, has/have signals present perfect, and will have signals future perfect.

SECTION 4

How Verb Tense Works on the ACT

ACT English verb tense questions follow predictable patterns. Understanding the mechanism behind these questions is like learning the playbook before the big game — once you see the plays, you can anticipate them. The test typically presents a passage written predominantly in one tense and then underlines a verb that may or may not match. Your job is to determine which tense is correct based on three types of evidence.

Evidence Type 1: Surrounding Verb Tense

The most common evidence is the tense used by other verbs in the same paragraph or passage. If the paragraph reads, 'The scientist examined the data, recorded her findings, and then ______ a conclusion,' the blank should be filled with a simple past verb like drew to maintain tense consistency.

Evidence Type 2: Time-Marker Words

Signal words embedded in the sentence point directly to the correct tense. Phrases like 'since 1985' or 'for the past decade' call for present perfect ('has studied') because the action started in the past and continues into the present. Words like 'yesterday' demand simple past, while 'by next year' signals future or future perfect.

Evidence Type 3: Logical Sequence of Events

When a sentence describes two events that happened at different times, you need the sequence of tenses to reflect chronological order. The event that occurred first typically takes the past perfect ('had + past participle'), and the later event takes the simple past. For example: 'By the time the ambulance arrived, the patient had already recovered.' The recovery happened first, so it gets past perfect.

Signal Word / PhraseTense It SignalsExample
yesterday, last year, in 1999Simple PastShe visited Rome last year.
now, currently, todaySimple PresentShe currently lives in Austin.
tomorrow, next week, soonSimple FutureShe will travel to Paris next week.
since, for (duration), so farPresent PerfectShe has studied French since 2018.
before (past event), by the time, alreadyPast PerfectShe had finished before I arrived.
by (future date), by the time (future)Future PerfectShe will have graduated by June.

Common ACT signal words and the tenses they trigger

SECTION 5

Detailed Tense Breakdown

Let's break the twelve tenses into the groups you'll encounter most often on the ACT, from highest to lowest frequency. The diagram below visualizes how the three most-tested tenses — simple past, simple present, and present perfect — relate to one another on a timeline. Understanding this visual relationship will help you quickly eliminate wrong answers.

TIMELINE OF MOST-TESTED TENSESPASTNOWFUTURESimple PastAction completedat a specific timeSimple PresentHabitual action orgeneral truthSimple FutureAction that willhappen laterPast Perfecthad + past participleEarlier of two past eventsPresent Perfect — has/have + past participleAction started in the past and continues to or is relevant in the presentFuture Perfectwill have + past participleCompleted before a future point
A timeline showing the most frequently tested verb tenses on the ACT. The top row shows the three simple tenses positioned along a time axis. Below, the past perfect and present perfect are shown with their relationship to the timeline.

The Six Tenses You Must Know Cold

TenseFormationWhen to UseACT Frequency
Simple Presentbase form (write/writes)General truths, habits, descriptions of current statesVery High
Simple Pastpast form (wrote)Completed actions at a definite past timeVery High
Simple Futurewill + base (will write)Predictions, plans, actions that haven't happened yetModerate
Present Perfecthas/have + past participle (has written)Actions that started in the past and continue to the present, or past actions with present relevanceHigh
Past Perfecthad + past participle (had written)An action completed before another past actionModerate
Future Perfectwill have + past participle (will have written)An action that will be completed before a specific future timeLow

The six tenses most frequently tested on the ACT English section

ℹ
ACT TIP

SECTION 6

Worked Example: ACT-Style Passage

Let's walk through a full ACT-style question from start to finish, just as you would on test day. Read the passage excerpt below and identify the correct verb tense for the underlined portion.

ℹ
PASSAGE EXCERPT

Worked example

  1. 1

    Step 1 — Read the Full Context

    The passage is about Georgia O'Keeffe. The first sentence uses simple past verbs ('moved,' 'painted') because those actions happened at a specific time (1949). The second sentence begins with the phrase 'Since that time', which is a critical signal word. Circle it or underline it mentally.
  2. 2

    Step 2 — Identify the Signal Word

    The word 'since' is one of the most reliable indicators of the present perfect tense. 'Since' means from a past point to the present moment. It tells you the action started in the past and is still relevant or ongoing now.
  3. 3

    Step 3 — Evaluate Each Answer Choice

    (A) 'inspired' — simple past. This would mean the inspiring stopped at some definite point. But 'since that time' implies it continues, so this doesn't fit. (B) 'has inspired' — present perfect. This matches the 'since' signal perfectly: started in the past, continues to now. (C) 'had inspired' — past perfect. This would mean the inspiring was completed before another past event, but no such earlier-past reference exists. (D) 'would inspire' — conditional. There's no conditional context here.
  4. 4

    Step 4 — Confirm and Select

    Choice (B) is the only tense that logically pairs with 'since that time.' The present perfect 'has inspired' captures an action that began in 1949 and continues to the present.
    Correct Answer: (B) has inspired

SECTION 7

Common ACT Traps & How to Avoid Them

The ACT English section doesn't just test whether you know verb tenses — it tests whether you can resist tempting wrong answers. The test writers design specific traps to catch students who rely on instinct rather than analysis. Below is a comparison of the most common traps alongside the strategies that defeat them.

TrapWhat It Looks LikeHow to Beat It
Unnecessary Tense ShiftA passage in past tense has one verb randomly switched to present tense. It 'sounds okay' when read quickly.Check the tenses of two or three nearby verbs. If they're all past, the underlined verb should be past too — unless a signal word justifies a shift.
Past Perfect Overuse'Had + past participle' appears in an answer choice for a sentence with only one past event. Students choose it because it sounds 'more formal.'Past perfect requires TWO past events — one before the other. If there's only one event, simple past is correct.
Progressive When Simple Works'Was studying' offered instead of 'studied.' The progressive version sounds descriptive and tempting.Ask: Is the sentence emphasizing the action's ongoing nature at a specific moment? If not, prefer the simpler form.
'Would' as Past Tense'Would write' offered where 'wrote' is correct. 'Would' implies habitual past or conditional mood.Only use 'would' for repeated past actions ('Every day, she would walk to school') or true conditionals ('If she had time, she would write').
Present Perfect vs. Simple Past'Has discovered' vs. 'discovered.' Both sound correct in isolation.Look for 'since' or 'for' (present perfect). Look for specific dates or 'ago' (simple past). The context decides.

The five most common ACT verb tense traps

SECTION 8

Verb Tense Beyond the ACT

The verb tense skills you build for the ACT carry directly into college writing and beyond. In academic essays, tense choice signals your relationship to sources, arguments, and evidence. Understanding these conventions now will give you an edge in college composition courses and professional writing.

ContextACT English ApproachCollege-Level Approach
Discussing LiteratureMatch surrounding tense in the passageUse the literary present: 'Hamlet struggles with indecision' (even though the play was written centuries ago)
Citing ResearchIdentify signal words to choose correct tenseAPA style: past tense for methods ('Smith studied'), present perfect for reviewing literature ('researchers have found')
Narrating EventsMaintain consistency; use past perfect for sequenceSame rules apply in personal statements and narrative essays; deliberate tense shifts can create stylistic effects
Subjunctive & ConditionalRarely tested; avoid 'would' unless clearly conditionalThe subjunctive mood ('If I were,' 'It is essential that she be') appears in formal academic and legal writing

How ACT verb tense rules extend into college-level writing

One concept you'll encounter in advanced English courses is the subjunctive mood, which uses verb forms that look like tense shifts but actually signal hypothetical or contrary-to-fact situations. While the ACT rarely tests this directly, recognizing it will prevent confusion if you encounter sentences like 'The committee recommended that she be appointed,' where 'be' replaces the expected 'is' or 'was.' Mastering the twelve standard tenses gives you a solid foundation to understand these advanced structures when you meet them in college.

SECTION 9

Practice Problems

Question 1: CONCEPTUAL

A passage is written entirely in the simple past tense. One sentence reads: 'The explorer charted the river and discovers a new species of fish.' Which of the following replacements for the underlined verb best maintains consistency with the rest of the passage?
  • A. discovers
  • B. discovered
  • C. had discovered
  • D. was discovering
Show answer
The correct answer is B) discovered. The passage is written entirely in the simple past tense, as shown by the verb 'charted' earlier in the same sentence. The underlined verb 'discovers' is in the simple present tense, which breaks the established past-tense pattern. Since no signal word or logical reason justifies a shift to present tense, the verb must match the surrounding past-tense verbs. 'Discovered' (simple past) is the correct form. Choice A ('discovers') is incorrect because it is simple present tense, inconsistent with the passage. Choice C ('had discovered') is incorrect because the past perfect implies an action completed before another past action, which is not signaled here. Choice D ('was discovering') is incorrect because the past progressive implies an ongoing action, which does not fit the context of a straightforward discovery.

Question 2: BASIC

Choose the correct verb form: 'Since the invention of the smartphone, communication ______ dramatically.' (A) changed (B) has changed (C) had changed (D) will change
Show answer
The correct answer is (B) has changed. The signal word 'since' indicates an action that started in the past (the invention of the smartphone) and continues to have relevance in the present. This scenario requires the present perfect tense. Choice (A) is simple past, which would require a specific past time marker like 'in 2007.' Choice (C) is past perfect, which requires two past events. Choice (D) is simple future, which contradicts the 'since' signal.

Question 3: INTERMEDIATE

'By the time the rescue team arrived at the mountain summit, the stranded hikers ______ there for nearly 48 hours.' Choose the best verb form: (A) waited (B) wait (C) had been waiting (D) have waited
Show answer
The correct answer is (C) had been waiting. Here is a step-by-step analysis of each choice: (A) waited — Simple past tense. This implies the waiting happened at a single point in the past with no connection to the arrival event. The conjunction 'by the time' signals a relationship between two past events requiring past perfect or past perfect progressive, so simple past is incorrect here. (B) wait — Simple present tense. The sentence is set entirely in the past ('the rescue team arrived'), so present tense is grammatically incompatible. Eliminated. (D) have waited — Present perfect tense. Present perfect connects a past action to the present moment ('now'), but this sentence is anchored entirely in the past. Present perfect cannot be used to describe an action completed before another past event. Eliminated. (A revisited as 'had waited') — Simple past perfect. 'Had waited' is grammatically acceptable and correctly places the hikers' waiting before the team's arrival. Many grammar authorities accept it in this context. However, simple past perfect treats the action as a completed block of time without emphasizing its ongoing, continuous nature. (C) had been waiting — Past perfect progressive. This form is also grammatically correct and, crucially, best captures the sentence's meaning. The phrase 'for nearly 48 hours' explicitly signals continuous, uninterrupted duration leading up to a past moment. When a duration phrase like this is present, the past perfect progressive is the preferred choice because it highlights that the action was actively ongoing across that entire span — not merely that it was completed before another event. 'By the time' reinforces this by marking the exact past moment at which that ongoing action was still in progress. Both 'had waited' and 'had been waiting' are grammatically defensible, but 'had been waiting' is the best answer because the explicit duration phrase 'for nearly 48 hours' calls for the progressive form to convey continuous, uninterrupted action up to a past reference point.

Question 4: APPLIED

Read the following passage and answer the question below. 'In 1969, Neil Armstrong [1] on the moon, becoming the first human to walk on the lunar surface.' Which of the following is the best version of the underlined portion [1]? (A) steps (B) stepped (C) has stepped (D) had stepped
Show answer
The correct answer is (B) stepped. Step-by-step verification: The underlined portion is the verb in the clause 'In 1969, Neil Armstrong [stepped] on the moon.' The phrase 'In 1969' is a specific point in the past, which requires simple past tense. (A) 'steps' is simple present — incorrect, because the event is not ongoing or habitual; Armstrong walking on the moon is a completed historical event. (B) 'stepped' is simple past — correct, because '1969' anchors the action at a completed moment in the past, and simple past is the appropriate tense for a finished action at a definite past time. (C) 'has stepped' is present perfect — incorrect, because present perfect cannot be used with a specific past time marker like 'In 1969'; present perfect describes actions with relevance to the present, not fixed historical moments. (D) 'had stepped' is past perfect — incorrect, because past perfect requires a second past event to establish a prior sequence, and no such second past event appears in this clause. Therefore, simple past 'stepped' is the only grammatically correct choice.

Question 5: CRITICAL THINKING

Read the following passage and answer the question. Marie Curie discovered radium in 1898. Today, radium [5] had been used in cancer treatment around the world. Which choice best completes the sentence while maintaining a grammatically correct and logically justified tense shift?
  • A. had been used
  • B. is used
  • C. was used
  • D. would have been used
Show answer
The correct answer is B) is used. Although the first sentence uses simple past tense ('discovered') to describe a completed historical event in 1898, the second sentence requires a shift to simple present tense. The word 'Today' signals that the time frame has changed from a specific past moment to a current, ongoing reality. Therefore, 'is used' correctly reflects what is happening now. Choice A ('had been used') is past perfect and incorrectly implies the use of radium ended before another past event. Choice C ('was used') is simple past and falsely implies radium is no longer used in cancer treatment. Choice D ('would have been used') is a conditional form with no logical basis here. On the ACT, tense shifts are acceptable — and sometimes required — when a clear contextual reason such as a time-marker word or a shift from historical narration to general present truth exists.

Varsity Tutors • ACT English • Verb Tense