The English language is a rich tapestry of grammatical structures, and understanding these nuances can significantly enhance clarity and impact in communication. Among these, the infinitive form of a verb, typically preceded by “to,” plays a crucial role in expressing purpose, intention, or action. However, a less commonly discussed but equally vital variation is the bare infinitive, which omits the “to” and carries its own set of distinct uses and grammatical implications.
Mastering the bare infinitive allows for more sophisticated and natural-sounding English, especially in specific contexts. It’s a feature that, once recognized, unlocks a deeper appreciation for the flexibility and expressiveness of the language.
The Core Concept: What is a Bare Infinitive?
A bare infinitive is the base form of a verb without the particle “to.” For instance, in the sentence “I want to go,” “to go” is the full or traditional infinitive. Conversely, in a sentence like “Let me go,” the verb “go” stands alone, functioning as a bare infinitive.
This omission of “to” is not arbitrary; it follows specific grammatical rules tied to certain verbs and sentence structures. Recognizing these triggers is key to correctly employing the bare infinitive.
The bare infinitive is essentially the root of the verb, stripped of its infinitive marker. It’s a fundamental building block that appears in conjunction with particular auxiliary verbs and in certain idiomatic expressions.
Key Verbs Governing the Bare Infinitive
Certain verbs in English consistently require the bare infinitive to follow them. These verbs often express permission, causation, or sensory perception. Understanding this category of verbs is foundational to using bare infinitives correctly.
Verbs of Permission and Prohibition
Verbs like “let” and “allow” are often confused, but they have distinct grammatical requirements. “Let” takes a bare infinitive, while “allow” takes the full infinitive.
For example, “Let him speak” is correct, using the bare infinitive “speak.” The sentence “Allow him to speak” is also correct, but it uses the full infinitive “to speak.” This distinction is crucial for accurate sentence construction.
Similarly, “permit” behaves like “allow,” requiring the full infinitive. “They permitted her to leave” is grammatically sound. The contrasting structure with “let” would be “They let her leave.”
Verbs of Causation
Verbs that indicate causing someone to do something also frequently trigger the bare infinitive. The most common examples are “make” and “have” when used in this causative sense.
Consider the sentence, “The teacher made the students finish their homework.” Here, “finish” is the bare infinitive, directly following the causative verb “made.” This structure implies an obligation or compulsion.
The verb “have,” when used to mean “to cause someone to do something,” also takes a bare infinitive. “I had my brother wash the car” is an example where “wash” is the bare infinitive, indicating that the speaker caused their brother to perform the action.
It’s important to differentiate this causative “have” from “have” in other contexts, such as possession (“I have a car”) or obligation (“I have to go”), where it does not govern a bare infinitive.
Verbs of Sensory Perception
Verbs related to seeing, hearing, feeling, and noticing often take a bare infinitive to describe the action that was perceived. These verbs allow us to report direct observations.
For instance, “I saw her leave the building” uses “leave” as a bare infinitive. This suggests the speaker witnessed the entire action of her departing.
If the speaker witnessed only part of the action, the present participle (verb-ing) is often used instead. “I saw her leaving the building” implies the speaker saw her in the process of departing, perhaps not from the very beginning.
Other verbs in this category include “hear,” “feel,” “watch,” and “notice.” “We heard them sing” uses the bare infinitive “sing.” “She felt the wind blow” uses the bare infinitive “blow.”
The Role of “Do” as an Auxiliary Verb
The auxiliary verb “do” (and its forms “does” and “did”) is a critical element in English grammar, particularly in forming questions, negations, and for emphasis. When “do” is used as an auxiliary, the main verb following it is always in the bare infinitive form.
In questions, “do” introduces the interrogative structure, and the subsequent verb reverts to its base form. “Do you understand?” uses “understand” as a bare infinitive. “Did she finish the report?” employs “finish” in its bare infinitive form.
Negations also rely on “do” to carry the negative aspect, again leaving the main verb as a bare infinitive. “I do not know the answer” uses “know” in its bare infinitive. “They didn’t see the accident” uses “see” as a bare infinitive.
Emphasis is another key function where “do” is used with a bare infinitive. “I do believe you are right” adds force to the statement of belief, with “believe” being the bare infinitive.
Special Cases and Idiomatic Expressions
Beyond the general rules, several idiomatic expressions and specific constructions feature the bare infinitive. These are often fixed phrases or common collocations that learners need to memorize.
“Why” Questions Implying Suggestion
When “why” is used to propose an action or suggest an idea, it is followed by the bare infinitive. This construction is common in informal conversation.
“Why go now?” is a suggestion to not leave at this moment. The verb “go” is in its bare infinitive form.
Similarly, “Why worry about it?” uses “worry” as a bare infinitive to question the need for concern. These are rhetorical questions often implying a contrary action.
“Had Better” and “Would Rather”
Phrasal expressions like “had better” and “would rather” inherently involve a degree of obligation, advice, or preference, and they are followed by the bare infinitive.
“You had better study for the exam” uses “study” as a bare infinitive to convey strong advice. The implication is that not studying would lead to negative consequences.
“I would rather stay home” uses “stay” as a bare infinitive to express a preference. This construction is common for indicating a choice between alternatives.
Note that “would rather” can also be followed by “than” and another bare infinitive to compare preferences, such as “I would rather walk than take the bus.”
“Help” with and without “to”
The verb “help” presents a unique flexibility: it can be followed by either the bare infinitive or the full infinitive, with little change in meaning.
“She helped me move the furniture” is perfectly correct, using the bare infinitive “move.” This is a very common construction.
“She helped me to move the furniture” is also grammatically correct and conveys essentially the same meaning. The inclusion of “to” is optional in this specific case.
This dual usage makes “help” an exception to the general pattern observed with other verbs. It’s a point of potential confusion but also demonstrates linguistic flexibility.
Distinguishing Bare Infinitives from Other Verb Forms
It is crucial to differentiate bare infinitives from other verb forms, such as the simple present tense or participles, to avoid grammatical errors.
The simple present tense, for example, often looks identical to the bare infinitive but functions differently within a sentence. “They go to the park” uses “go” in the simple present tense, indicating a habitual action.
In contrast, “They let us go to the park” uses “go” as a bare infinitive, governed by the verb “let.” The meaning shifts from habit to permission or allowance.
Similarly, bare infinitives must be distinguished from gerunds (which end in -ing and function as nouns) and present participles (which also end in -ing and function as adjectives or part of continuous verb tenses). “Running is good exercise” uses “running” as a gerund. “I saw him running” uses “running” as a present participle.
The Nuance of “Make” and “Have”
While “make” and “have” are typically cited as causative verbs requiring a bare infinitive, their usage can sometimes be subtle. Understanding these nuances prevents misapplication.
When “make” means to force or compel, it takes a bare infinitive. “The rain made us stay inside” clearly shows compulsion. Here, “stay” is the bare infinitive.
However, if “make” is used in the sense of “to create” or “to cause to become,” it might be followed by an adjective or a noun phrase, not a bare infinitive. “He made me happy” uses “happy” (an adjective) after “made.”
Similarly, “have” as a causative takes a bare infinitive. “I’ll have the mechanic fix my car” uses “fix” as a bare infinitive. This implies arranging for the mechanic to perform the action.
The structure “have + noun + full infinitive” exists but carries a different meaning, often implying a different kind of arrangement or experience. “I had the opportunity to speak with the director” uses “to speak” as a full infinitive, indicating an experience rather than causation.
Sensory Verbs: Direct vs. Indirect Perception
The use of bare infinitives with sensory verbs like “see,” “hear,” and “feel” often indicates a direct perception of a complete action.
When we “see someone do something,” we are reporting that we witnessed the entire event from beginning to end. “I saw the bird build its nest” suggests witnessing the whole process.
As mentioned earlier, using the present participle instead of the bare infinitive signals a partial or ongoing action. “I saw the bird building its nest” implies seeing the bird in the act of construction, but not necessarily the entire duration.
This subtle difference in verb form allows for precise communication about the nature and completeness of observed events.
The Exception: “Would Rather” vs. “Would Rather Than”
The expression “would rather” is a common bearer of the bare infinitive. “I would rather sleep” uses “sleep” as the bare infinitive to state a preference.
When comparing two preferences using “would rather,” the structure is “would rather + bare infinitive + than + bare infinitive.” “She would rather read than watch TV” clearly illustrates this comparative use with two bare infinitives.
This parallel structure reinforces the grammatical rule for this specific idiomatic phrase.
Bare Infinitives in Subjunctive Mood Constructions
Although less common in modern English, bare infinitives can appear in certain archaic or formal subjunctive constructions, often following specific conjunctions or verbs.
Verbs like “insist,” “demand,” “suggest,” and “recommend” can trigger a subjunctive clause, often introduced by “that,” which uses the bare infinitive. For example, “The doctor insisted that he rest immediately.”
In this formal construction, “rest” is the bare infinitive, even though the subject is third-person singular. This reflects the subjunctive mood, which expresses hypothetical, wished-for, or essential conditions.
Modern usage often favors modal verbs like “should” in such cases: “The doctor insisted that he should rest immediately.” However, the bare infinitive subjunctive remains grammatically correct in formal contexts.
Common Pitfalls and How to Avoid Them
One common error is using “to” with verbs that require a bare infinitive. Forgetting that “let,” “make,” and sensory verbs take a bare infinitive is a frequent mistake.
Another pitfall is confusing the causative “have” with other uses of “have.” Remembering that “have” must imply causing someone else to do something for the bare infinitive rule to apply is key.
Finally, differentiating bare infinitives from simple present tense forms is essential. Pay close attention to the governing verb or structure to determine the correct form.
Conclusion: Embracing the Bare Infinitive’s Power
The bare infinitive, though seemingly simple, is a powerful grammatical tool that adds precision and fluency to English. Its correct application relies on recognizing the specific verbs and structures that govern its use.
By internalizing the rules surrounding verbs of permission, causation, perception, and auxiliary verbs like “do,” speakers and writers can significantly improve their accuracy.
Mastering these nuances allows for more natural and sophisticated expression, avoiding common errors and enhancing overall communicative effectiveness.