How to Use Non-Finite Verbs in English Grammar – Easy Rules, Examples & Practice Exercises

Non-finite verbs are one of the most important topics in English grammar. Whether you are preparing for school exams, competitive tests, or simply improving your English writing and speaking skills, understanding non-finite verbs can make a significant difference. Unlike finite verbs, non-finite verbs do not show tense, person, or number. Instead, they function as nouns, adjectives, or adverbs while supporting the main verb in a sentence.

Many students become confused when deciding whether to use an infinitive, a gerund, or a participle. Fortunately, learning a few simple rules can help you choose the correct form with confidence. This guide explains each type of non-finite verb in clear American English with easy examples, comparison tables, and practical grammar tips.

What Are Non-Finite Verbs?

A non-finite verb is a verb that does not change according to the subject or tense of a sentence. It cannot act as the main verb by itself. Instead, it works with another verb or functions as a noun, adjective, or adverb.

Examples:

• I want to learn English.
• Reading books improves vocabulary.
• The broken window needs repair.

In each sentence, the highlighted words are non-finite verbs because they do not express the tense of the sentence.

Finite Verbs vs. Non-Finite Verbs

Finite Verbs	Non-Finite Verbs
Show tense	Do not show tense
Change with the subject	Never change with the subject
Can be the main verb	Cannot be the main verb alone
Express complete action	Support or describe the action
Examples: runs, wrote, is eating	Examples: to run, running, written

Example Comparison

Sentence	Finite Verb	Non-Finite Verb
She wants to travel.	wants	to travel
Reading helps everyone.	helps	Reading
The broken chair was repaired.	was repaired	broken
They enjoy playing soccer.	enjoy	playing

Types of Non-Finite Verbs

There are three main types of non-finite verbs in English grammar.

1. Infinitives
2. Gerunds
3. Participles

Type	Form	Function	Example
Infinitive	to + base verb	Noun, adjective, or adverb	to read
Gerund	verb + ing	Noun	reading
Participle	verb + ing / verb³	Adjective	broken, smiling

How to Use Infinitives Correctly

An infinitive is usually formed by placing to before the base form of a verb. Infinitives are commonly used after certain verbs, adjectives, and nouns. They often express purpose, intention, or future action.

Rule 1: Use an Infinitive After Certain Verbs

Many common verbs are followed by an infinitive.

Verb	Example
want	I want to learn.
hope	She hopes to win.
plan	They plan to travel.
decide	We decided to stay.
agree	He agreed to help.

Rule 2: Use an Infinitive to Express Purpose

An infinitive often explains why someone does something.

• She went to the store to buy milk.
• He studies every day to improve his grades.
• We exercise to stay healthy.
• They saved money to purchase a new house.

Rule 3: Use an Infinitive After Adjectives

Infinitives commonly follow adjectives that describe feelings or opinions.

• It is easy to understand.
• She is happy to help.
• The test was difficult to complete.
• It is important to practice every day.

How to Use Gerunds Correctly

A gerund is the -ing form of a verb used as a noun. It can act as the subject, object, or object of a preposition.

Rule 1: Use a Gerund as the Subject

• Reading improves vocabulary.
• Swimming is excellent exercise.
• Learning takes patience.

Rule 2: Use a Gerund After Certain Verbs

Verb	Example
enjoy	I enjoy reading.
avoid	She avoided answering.
finish	He finished writing.
keep	Keep practicing.
consider	They considered moving.

Rule 3: Use a Gerund After Prepositions

Whenever a verb follows a preposition, use the gerund form.

Preposition	Example
after	After finishing dinner, we watched a movie.
before	Wash your hands before eating.
without	He left without saying goodbye.
by	You can improve by practicing daily.
instead of	Instead of driving, we walked.

How to Use Participles Correctly

A participle is a verb form that functions as an adjective. Participles describe nouns and provide additional information about them.

Types of Participles

Type	Form	Example
Present Participle	Verb + ing	The crying baby needs attention.
Past Participle	Verb³	The broken chair was replaced.
Perfect Participle	Having + Verb³	Having completed the assignment, she relaxed.

Participles make writing more descriptive and concise. They are widely used in academic writing, newspapers, books, and professional communication.

• The smiling child waved happily.
• The damaged bridge was closed.
• Having finished the meeting, the manager left the office.
• The glowing stars filled the night sky.
• The frightened puppy hid under the table.

In Part 2, you will learn How to Fill in the Blank with Non-Finite Verbs, understand exam-focused grammar rules, compare infinitives and gerunds, avoid common mistakes, and practice with solved exercises and an answer key.

How to Fill in the Blank with Non-Finite Verbs

Many English grammar exams include fill-in-the-blank questions that test your understanding of non-finite verbs. Instead of guessing, you should learn how to recognize sentence patterns. Once you identify the grammar clue in a sentence, choosing the correct non-finite verb becomes much easier.

Step-by-Step Method

Grammar Clue	Use	Example
After a preposition	Gerund (Verb + ing)	She left without saying goodbye.
After "want", "hope", "plan", "decide"	Infinitive (to + verb)	They hope to win.
Purpose of an action	Infinitive	He studies to succeed.
Verb acts as the subject	Gerund	Reading is enjoyable.
Describes a noun	Participle	The broken window.
Earlier completed action	Perfect Participle	Having finished the work, she left.
After see, hear, make, let	Bare Infinitive	I saw him cross the street.

Infinitive vs. Gerund

Infinitive	Gerund
to read	reading
Often expresses purpose.	Often functions as a noun.
Used after many verbs.	Used after prepositions.
I want to study.	I enjoy studying.
She plans to travel.	He avoided answering.

Gerund vs. Present Participle

Gerund	Present Participle
Acts as a noun.	Acts as an adjective.
Swimming is fun.	The swimming child smiled.
Reading improves knowledge.	The reading student was quiet.
Functions like a thing or activity.	Describes a person or object.

Common Verbs Followed by Gerunds

enjoy	avoid	finish	keep	mind
practice	consider	admit	suggest	delay
risk	recommend	quit	deny	postpone

Common Verbs Followed by Infinitives

want	hope	plan	agree	promise
decide	learn	attempt	expect	need
offer	choose	refuse	manage	wish

Solved Fill-in-the-Blank Examples

No.	Sentence	Answer	Reason
1	I enjoy ______ every evening. (read)	reading	After "enjoy" use a gerund.
2	She wants ______ a doctor. (become)	to become	After "want" use an infinitive.
3	He left without ______ goodbye. (say)	saying	After a preposition use a gerund.
4	They decided ______ home early. (go)	to go	After "decide" use an infinitive.
5	The ______ glass was replaced. (break)	broken	Past participle describes the noun.
6	______ the assignment, she relaxed. (finish)	Having finished	Perfect participle shows earlier action.
7	I saw him ______ the gate. (open)	open	After "see" use the bare infinitive.
8	______ every day improves your English. (practice)	Practicing	Subject of the sentence = gerund.
9	It is important ______ carefully. (listen)	to listen	After an adjective use an infinitive.
10	She kept ______ until midnight. (work)	working	After "keep" use a gerund.

Common Mistakes Students Make

Incorrect	Correct	Explanation
I enjoy to swim.	I enjoy swimming.	"Enjoy" takes a gerund.
He decided going.	He decided to go.	"Decide" takes an infinitive.
She left without say.	She left without saying.	Use a gerund after a preposition.
I made him to wait.	I made him wait.	"Make" takes the bare infinitive.
The break chair.	The broken chair.	Past participle describes the noun.

Quick Grammar Tips

• Use a gerund after every preposition.
• Use an infinitive after verbs like want, hope, decide, plan, agree, and promise.
• Use a gerund after verbs such as enjoy, avoid, finish, keep, and consider.
• Use a participle to describe a noun.
• Use a perfect participle to show that one action happened before another.
• After see, hear, make, let, and watch, use the bare infinitive.
• Always identify the grammar clue before filling in the blank.

Practice Exercise

1. I hope ______ the competition. (win)
2. He avoided ______ the question. (answer)
3. She came here ______ English. (learn)
4. The ______ leaves covered the ground. (fall)
5. ______ breakfast, they left for school. (finish)
6. We are interested in ______ French. (study)
7. I heard the baby ______ loudly. (cry)
8. My brother enjoys ______ novels. (read)
9. They promised ______ on time. (arrive)
10. The ______ student received an award. (smile)

Answer Key

1. to win
2. answering
3. to learn
4. fallen
5. Having finished
6. studying
7. cry
8. reading
9. to arrive
10. smiling

Frequently Asked Questions (FAQs)

1. What is a non-finite verb?

A non-finite verb is a verb that does not show tense, person, or number and cannot serve as the main verb of a sentence by itself.

2. What are the three types of non-finite verbs?

The three types are infinitives, gerunds, and participles.

3. How can I identify a gerund?

A gerund ends in -ing and functions as a noun.

4. When should I use an infinitive?

Use an infinitive after many verbs, adjectives, and whenever you express purpose or intention.

5. Why are non-finite verbs important?

They help you write clear, natural, and grammatically correct English. They are also a common topic in school exams and competitive tests.

Summary

Non-finite verbs are essential for writing and speaking accurate English. Understanding when to use an infinitive, a gerund, or a participle allows you to build grammatically correct sentences with confidence. Instead of memorizing isolated rules, learn to recognize sentence patterns and grammar clues. With regular practice, identifying the correct non-finite verb in fill-in-the-blank questions becomes simple and accurate. Continue practicing with different sentence structures, and you will quickly master one of the most important topics in English grammar.