If you have ever come across the term nonfinite verb in an English grammar lesson and wondered what it actually means, you are not alone. The name sounds complicated, but the concept is much easier than it first appears. A nonfinite verb is simply a verb form that does not show tense or agree with the subject in the way a finite verb does.
Understanding nonfinite verbs can make English grammar much clearer because they appear everywhere. Infinitives, gerunds, and participles are all important nonfinite verb forms. In this guide, we will explain what a nonfinite verb means, explore its different types, provide plenty of examples, discuss common mistakes, and compare nonfinite and finite verbs in simple language.
Quick Answer: What Is a Nonfinite Verb?
A nonfinite verb is a verb form that does not independently show tense or change according to the subject.
Common nonfinite verb forms include:
- Infinitives: to eat, to write, to study
- Gerunds: eating, writing, studying
- Present participles: eating, writing, studying
- Past participles: eaten, written, studied
Examples:
She wants to study.
Here, wants is the finite verb, while to study is a nonfinite verb.
I enjoy reading.
Here, enjoy is finite, while reading is a nonfinite verb.
The easiest way to remember it is:
Finite verb = shows tense or agrees with the subject
Nonfinite verb = does not independently show tense or subject agreement
What Does Nonfinite Verb Mean?
The word nonfinite basically means not limited by tense or subject agreement.
A finite verb can normally tell us something about when an action happens.
For example:
She works every day.
She worked yesterday.
She will work tomorrow.
The verbs works, worked, and will work help establish the time or grammatical structure.
A nonfinite verb does not work independently in this way.
For example:
She wants to work.
The word work does not change to show whether the action happens in the past, present, or future. The finite verb wants carries the grammatical information.
Finite Verb vs Nonfinite Verb
The easiest way to understand nonfinite verbs is to compare them with finite verbs.
| Feature | Finite Verb | Nonfinite Verb |
|---|---|---|
| Shows tense independently | Yes | No |
| Changes according to subject | Sometimes | No |
| Can normally be the main verb of a clause | Yes | No, not by itself |
| Examples | works, worked, is | to work, working, worked |
| Common forms | Present and past forms | Infinitives and participles |
| Example | She works. | She likes to work. |
Consider:
He plays football.
Here, plays is finite.
Now look at:
He likes playing football.
likes is finite, while playing is nonfinite.
Types of Nonfinite Verbs
There are three major types of nonfinite verb forms in English:
- Infinitives
- Gerunds
- Participles
Each has a different grammatical function.
Infinitives as Nonfinite Verbs
An infinitive is one of the most familiar types of nonfinite verb.
The basic form is often:
to + base verb
Examples include:
- to eat
- to sleep
- to read
- to write
- to learn
- to travel
- to understand
For example:
I want to learn English.
Here, want is the finite verb and to learn is a nonfinite infinitive.
Another example:
She decided to leave early.
decided is finite, while to leave is nonfinite.
Bare Infinitives
English also has bare infinitives, which are infinitives without to.
For example:
She can swim.
Let him go.
I saw him cross the road.
In these sentences, swim, go, and cross are nonfinite verb forms.
The modal verb or another finite verb provides the grammatical structure.
Gerunds as Nonfinite Verbs
A gerund is an -ing form of a verb that functions as a noun.
For example:
Swimming is good exercise.
Here, swimming is functioning as the subject of the sentence.
Another example:
I enjoy reading.
Here, reading functions as the object of enjoy.
More examples:
Cooking is one of her favorite activities.
He enjoys playing cricket.
Learning English takes practice.
Although gerunds come from verbs, they can perform grammatical roles normally associated with nouns.
Participles as Nonfinite Verbs
Participles are another major category of nonfinite verb forms.
There are two main types:
- Present participles
- Past participles
Present Participles
Present participles usually end in -ing.
Examples:
- running
- smiling
- crying
- working
- studying
For example:
The boy running down the street is my brother.
Here, running helps describe the boy.
Another example:
The woman standing near the door is my teacher.
The word standing is a nonfinite participle.
Past Participles
Past participles vary depending on the verb.
Examples:
- worked
- played
- written
- eaten
- broken
- seen
- taken
For example:
The book written by the author became popular.
Here, written is a nonfinite past participle.
Another example:
The window broken during the storm needs repair.
The word broken is a past participle functioning as part of a reduced structure.
Nonfinite Verbs in Sentences
Nonfinite verbs appear constantly in everyday English.
Consider:
She hopes to win the competition.
- hopes = finite verb
- to win = nonfinite verb
Another example:
They enjoy playing badminton.
- enjoy = finite verb
- playing = nonfinite verb
Another:
The man sitting outside is my uncle.
- is = finite verb
- sitting = nonfinite verb
Another:
The documents signed yesterday are ready.
- are = finite verb
- signed = nonfinite verb
This is why recognizing nonfinite verbs is useful when analyzing sentence structure.
Why Are Nonfinite Verbs Important?
Nonfinite verbs allow English speakers and writers to combine ideas efficiently.
Compare:
She went to the library. She wanted to study.
This can become:
She went to the library to study.
The infinitive to study allows us to express purpose without creating another full clause.
Similarly:
The boy was sitting near the window. He was reading a book.
We can write:
The boy sitting near the window was reading a book.
The nonfinite form sitting helps create a more compact sentence.
Common Mistakes With Nonfinite Verbs
Mistake 1: Thinking Every Verb Ending in -ing Is a Gerund
An -ing form can function as a gerund or a present participle.
Compare:
Swimming is fun.
Here, swimming acts like a noun, so it is a gerund.
The boy swimming in the pool is my cousin.
Here, swimming describes the boy, so it is a present participle.
The form looks the same, but the grammatical function is different.
Mistake 2: Treating a Nonfinite Verb as the Main Finite Verb
Incorrect:
She to study every evening.
Correct:
She studies every evening.
Or:
She wants to study every evening.
The infinitive to study normally needs an appropriate grammatical structure around it.
Mistake 3: Using the Wrong Infinitive Form
Some verbs are followed by to + verb, while others are followed by a bare infinitive or an -ing form.
For example:
I want to go.
But:
I enjoy going.
Not:
I enjoy to go.
Learning common verb patterns is therefore important.
Mistake 4: Assuming Nonfinite Means Unimportant
Nonfinite verbs may not carry tense independently, but they can be essential to the meaning of a sentence.
For example:
She decided to leave.
Without to leave, the sentence would be incomplete in meaning.
How to Identify a Nonfinite Verb
When you see a possible verb, ask these questions:
Step 1: Does it show tense?
If the verb independently indicates present or past time, it may be finite.
Step 2: Does it agree with the subject?
For example:
He works.
They work.
The form changes according to the subject, which is a clue that the verb is finite.
Step 3: Is it an infinitive or participle?
Forms such as to work, working, and worked may be nonfinite depending on their grammatical role.
Step 4: Is another verb carrying the tense?
In:
She wants to leave.
wants carries the tense, while to leave is nonfinite.
American vs British English
The basic concept of the nonfinite verb is the same in American and British English.
Both varieties use:
- Infinitives
- Gerunds
- Present participles
- Past participles
There may be differences in particular vocabulary choices or verb patterns, but the grammatical concept itself does not change.
For example:
She wants to travel.
This structure is standard in both American and British English.
Similarly:
He enjoys reading.
is natural in both varieties.
FAQs
1. What is a nonfinite verb?
A nonfinite verb is a verb form that does not independently show tense or subject agreement. Infinitives, gerunds, and participles are common nonfinite forms.
2. What are examples of nonfinite verbs?
Examples include to eat, to write, eating, writing, eaten, and written.
3. What is the difference between finite and nonfinite verbs?
A finite verb can show tense or subject agreement, while a nonfinite verb does not independently do so.
4. Is an infinitive a nonfinite verb?
Yes. Both to-infinitives and bare infinitives are nonfinite verb forms.
5. Is a gerund a nonfinite verb?
Yes. A gerund is an -ing form that functions as a noun and is considered a nonfinite verb form.
6. Is a participle a nonfinite verb?
Yes. Present and past participles are nonfinite verb forms.
7. Can a nonfinite verb be the main verb?
A nonfinite verb cannot normally function as the finite main verb of an independent clause by itself. It generally depends on another verb or grammatical structure.
8. Are nonfinite verbs the same in American and British English?
The basic grammatical concept is the same in both varieties. Both use infinitives, gerunds, and participles as nonfinite forms.
Final Summary
A nonfinite verb is a verb form that does not independently express tense or change according to the subject. The most important nonfinite forms are infinitives, gerunds, and participles. They appear in sentences such as She wants to learn, I enjoy reading, and The man standing outside is my teacher.
The easiest way to understand nonfinite verbs is to compare them with finite verbs. In She wants to study, wants is finite because it carries the tense and agrees with the subject, while to study is nonfinite. Once you learn to identify which verb carries the grammatical information, recognizing nonfinite verbs becomes much easier.
