Recognize and correct verb tense and verb form errors

The study of verb tense and verb form has been central to the grammatical tradition in English since the earliest attempts to codify the language's structure in the sixteenth and seventeenth centuries. Early English grammarians—borrowing heavily from Latin paradigms—sought to classify verbs according to their temporal reference and morphological behavior, thereby establishing frameworks that persist in modern standardized testing. The HESI A2 Grammar section draws on this long tradition, requiring candidates to demonstrate not merely passive recognition of tense categories but the ability to detect subtle errors in tense consistency and verb morphology within clinical and academic contexts. Understanding the historical development of tense description in English illuminates why certain error patterns recur and why standardized exams target them so reliably.

The persistent emphasis on verb tense and form in standardized assessments reflects a practical reality: errors in temporal reference and morphological accuracy are among the most common writing mistakes in academic and professional contexts. In health sciences particularly, imprecise tense usage in charting, research reporting, and clinical documentation can introduce ambiguity with real consequences. The question this lesson addresses is therefore both theoretical and practical: How can you systematically identify and correct verb tense and verb form errors?

Before examining specific error patterns, it is essential to establish the foundational principles that govern verb tense selection and verb form construction in Standard Written English. The HESI A2 tests these principles through sentences that contain one or more errors in tense consistency, irregular verb morphology, or aspect and mood usage. Mastery requires both categorical knowledge—knowing the twelve tense-aspect combinations—and contextual sensitivity—recognizing when a passage demands a particular tense for logical coherence.

The diagram above serves as a reference architecture for understanding verb form errors on the HESI A2. Most errors tested on the exam involve one of three mismatches: using the wrong row (confusing simple past with present perfect, for instance), using the wrong column (an unmotivated shift from past to present), or using an incorrect verb form within the correct cell (writing "had went" instead of "had gone," thereby using the simple past form where the past participle is required). When you encounter a verb tense question on the exam, mentally locate the verb in this matrix and verify that both the auxiliary structure and the main verb's morphological form are appropriate for the intended cell.

Error Category 1: Unmotivated Tense Shifts

An unmotivated tense shift occurs when a writer changes tense within a sentence or across sentences without any logical reason—such as a change in the time frame being discussed or an established convention (e.g., using present tense to discuss research findings). Consider the sentence: "The patient reported chest pain and says the pain began yesterday." Here, the shift from past tense ("reported") to present tense ("says") is unmotivated; consistency demands either "reported...said" or "reports...says." The HESI A2 frequently tests this pattern, particularly in clinical narrative contexts where maintaining a consistent temporal perspective is essential for clarity.

Error Category 2: Irregular Verb Form Confusion

English contains approximately 200 irregular verbs whose past tense and past participle forms do not follow the regular -ed pattern. Errors arise from three tendencies: applying regular morphology to irregular verbs ("*breaked" instead of "broke"), confusing the simple past with the past participle ("*I have went" instead of "I have gone" or "*She done it" instead of "She did it"), and hypercorrection—using a participle form as a simple past ("*I seen it" or "*He drunk the water" as finite forms). These errors are particularly common with high-frequency verbs such as lie/lay, rise/raise, sit/set, swim/swam/swum, and drink/drank/drunk.

Error Category 3: Auxiliary Verb Misuse

Perfect tenses require the auxiliary "have" (has, have, had) followed by a past participle, while progressive tenses require a form of "be" followed by the present participle (-ing form). A common HESI A2 error pattern involves mismatching the auxiliary with the wrong verb form: "*She has walking to the clinic" (auxiliary "has" paired with -ing instead of past participle) or "*The medication was took at noon" (auxiliary "was" paired with past tense instead of past participle for the passive voice). Recognizing which auxiliary demands which verb form is a mechanical skill that eliminates a significant category of test errors.

Error Category 4: Conditional and Subjunctive Mood

The subjunctive mood and conditional constructions present unique form requirements. In the subjunctive, the base form of the verb is used regardless of the subject: "The physician recommended that the patient take the medication" (not "*takes"). In contrary-to-fact conditionals, the past subjunctive employs "were" for all persons: "If the patient were allergic..." (not "*was"). These forms are tested less frequently than tense shifts but represent high-value knowledge for the exam's more challenging items.

The HESI A2 draws heavily from a finite pool of frequently confused irregular verbs. Mastery of the following high-frequency forms will eliminate most verb form errors you encounter on the exam. The table below organizes these verbs into groups based on their pattern of irregularity, which can serve as a mnemonic framework: some verbs change their internal vowel (ablaut), some have identical past tense and past participle forms, and some have three entirely distinct forms.

The following example replicates the format and difficulty level of a HESI A2 Grammar question involving verb tense and form errors. Work through the diagnostic steps from Section 4 to identify the error and select the correct revision.

Not every tense change within a sentence or passage constitutes an error. The HESI A2 occasionally includes answer choices that "correct" a legitimate tense shift, so distinguishing between motivated and unmotivated shifts is essential. The following table contrasts situations where tense shifts are errors with situations where they are logically required.

Beyond the core tense-aspect system, the HESI A2 occasionally tests verb form errors involving modal verbs and the passive voice. These constructions are particularly relevant for students entering health professions, where passive constructions are prevalent in clinical documentation and research literature. Understanding these advanced patterns prepares you not only for the exam but also for the professional writing you will encounter in graduate-level coursework.

As you progress into graduate-level health sciences writing, these patterns become second nature. Research articles consistently use the past tense for methods and results sections ("The sample was collected..."), the present tense for established findings and discussion ("These results suggest..."), and the present perfect for reviewing prior literature ("Several studies have demonstrated..."). Internalizing these conventions not only prepares you for the HESI A2 but also equips you for the genre-specific tense expectations of academic and clinical discourse.