What Are Non-finite Verbs?

Non-finite Verbs

A non-finite verb (also known as a verbal) is the term used to describe a verb that is not showing tense. In other words, it a verb form that does not act like a verb (or, at least, the type of verb you need to form a sentence). Therefore, a non-finite verb is never the main verb in a sentence. (That's a finite verb.)

There are three types of non-finite verbs:

Easy Examples of Non-finite Verbs

In each example, the non-finite verb is shaded and the finite verb (the main verb) is in bold.
TypeTelltale SignExample (Function)
GerundThe -ing endingLee likes playing rugby. (noun)
InfinitiveUsually preceded by toHe wants to play rugby. (noun)
He wants a game to play. (adjective)
He begged to play. (adverb)
ParticiplePresent Participle:
The -ing ending

Past Participle:
Usually ends -ed, -d, -t, -en, or -n
Lee was the playing reserve. (adjective)
We watched Lee playing rugby. (adjective)
He is playing badly. (verb tense)

The set-piece played failed. (adjective)
He has played two games. (verb tense)
The set-piece was played by Lee. (verb tense)

More Examples of Non-finite Verbs (Gerunds)

A gerund is a noun formed from a verb. All gerunds end -ing.
  • Discovery consists of seeing what everybody has seen and thinking what nobody has thought. (Biochemist Albert Szent-Gyorgyi)
  • I have never taken any exercise except sleeping and resting. (Writer Mark Twain)
Gerunds maintain some verb-like properties (e.g., they can take objects and be modified by adverbs). Therefore, a gerund will often appear in a gerund phrase, which consists of the gerund and any objects and modifiers. (In these examples, the gerund phrases are underlined.)
  • Art is making something out of nothing and selling it. (Musician Frank Zappa)
  • I started by photographing birds in my garden.
Read more about gerunds.

More Examples of Non-finite Verbs (Infinitives)

An infinitive is a verb form (often preceded by to) which can function as a noun, an adjective or an adverb.
  • To win was everything.
  • (Here, the infinitive is functioning as a noun. Compare this with "The victory was everything.")
  • It is the competition to win.
  • (Here, the infinitive is functioning as an adjective. Compare this with "It is the top competition.")
  • The man paid to win.
  • (Here, the infinitive is functioning as an adverb. It is modifying the verb paid. Compare this with "The man paid so he could win." The clause "so he could win" is an adverbial clause of reason.)
An infinitive often appears in an infinitive phrase. An infinitive phrase consists of the infinitive and any objects and modifiers. (The infinitive phrases are underlined.)
  • She needed to find a lot of money quickly.
  • (The infinitive phrase is being used as a noun.)
  • I showed her the best way to make a Yorkshire pudding.
  • (The infinitive phrase is being used as an adjective.)
  • He set the camera to film whatever was eating his chickens.
  • (The infinitive phrase is being used as an adverb.)
Not all infinitives are preceded by to. Infinitives also feature in verb chains after verbs like could, may, should, and would (i.e., auxiliary verbs) and verbs like to make and to let.
  • If the highest aim of a captain were to preserve his ship, he would keep it in port forever. (Saint Thomas Aquinas)
  • Let them eat cake. (Queen of France Marie Antoinette)
Read more about infinitives.

More Examples of Non-finite Verbs (Participles)

A participle is a verb form that can function as an adjective. There are two types of participles: the present participle (ending -ing) and the past participle (usually ending ed, -d, -t, -en, or -n). Here are some participles being used as adjectives:
The VerbThe Present ParticipleThe Past Participle
To bakethe baking breadthe baked bread
To printthe printing documentthe printed document
To lowerthe lowering pricesthe lowered prices
Here are some real-life examples:
  • A stirring dwarf we do allowance give before a sleeping giant. (Playwright William Shakespeare)
  • (Here, there are two present participles functioning as adjectives.)
  • Food is an important part of a balanced diet. (Author Fran Lebowitz)
  • (Here, the past participle is functioning as an adjective.)
Often, a participle heads up a participle phrase functioning as an adjective. (The participle phrases are underlined.)
  • Drawing on my fine command of the English language, I said nothing. (Writer Robert Benchley)
  • Connected entirely by canals and footbridges, the Dutch village of Giethoorn has no roads.
Participles are also used to form verb tenses.
  • I was eating beans by candle light for a decade. (Actor Eric Andre)
  • (Here, a present participle helps to form the past progressive tense.)
  • I have taken more out of alcohol than alcohol has taken out of me. (Prime Minister Winston Churchill)
  • (Here, a past participle helps to form two examples of the present perfect tense.)
Read more about participles and tenses.

More about Non-finite Verbs

It can get complicated.
  • People want to win. Most people have the will to win, but few have the will to prepare to win. (Basketball coach Bobby Knight)
  • (Here, the first to win functions as a noun. The second to win functions as an adjective, and the third to win functions as an adverb that modifies to prepare, which functions as an adjective.)
  • The way to make money is to buy when blood is running in the streets. (Business magnate John Davison Rockefeller)
  • (Here, to make functions as an adjective, to buy functions as a noun, and running forms the present progressive tense.)

Why Should I Care about Non-finite Verbs?

With regard to the two quotation above, do you think Bobby Knight or Rockerfeller knew the grammar behind their quotations? Not a chance. Most of us use non-finite verbs without giving the grammar a second thought. But, if that's you, you might be missing a trick. Here are three good reasons to think about non-finite verbs a little more.

(Reason 1) Gerunds can reduce your wordcount and improve reading flow.

The overuse of normal nouns (i.e., not gerunds) and the prepositions needed to make those nouns work can make a sentence jolty and unnecessarily long.
  • The use of urine for the cleaning of teeth was a common practice in the time of the Romans.
  • (This sentence has way too many nouns. It's long and stuffy, and it doesn't flow naturally.)
As a rule, a well-placed verb is the best way to fix a jolty, nouny sentence, but gerunds (being a bit verby themselves) are also a useful tool for reducing your wordcount and creating a more flowing sentence.
  • Cleaning teeth with urine was common in Roman times.
  • (This 9-word version features one gerund phrase. It flows far better than the 19-word version above.)
Of course, a few other things have happened here to reduce from 19 to 9 words (e.g., in the time of the Romans became in Roman times), but the very act of looking to replace a rabble of nouns and prepositions with some sleek gerunds or verbs will drive those other changes too.

The overuse of nouns is particularly common in a business setting because writers feel that noun chains make their writing sound more corporate. See also verbal nouns and gerunds.

(Reason 2) Participles allow a sentence structure that lets you say two or more things tidily.

You will know that it's a good idea to mix up your sentence structures (e.g., short ones, long ones, active ones, passive ones) to keep your readers engaged. Participles can help with this. They can be used to create a great sentence structure that lets you to say two or more things about the subject, not only in an efficient way but also in a way which adds that variety to your sentence structures.
  • Imbued during my teens with a sense of doom, I wouldn't live those days again even if it were possible, but I can't pretend growing old is sweetness either. (paraphrase of author Ruth Rendell)
  • (The participle phrase describes the subject (I) before the reader gets to the subject. That's pretty cool. High fives.)
  • Always willing to entertain others' ideas, Jack is adept at building trust through regular, open and honest communication.
  • Demonstrating level headedness in all business dealings, Jill listens actively and engages appropriately when in disagreement.
Here are some possible alternatives.
  • I wouldn't live my teens again even if it were possible because I was imbued with a sense of doom during those days, but I can't pretend growing old is sweetness either.
  • Jack is always willing to entertain others’ ideas, and he is adept at building trust through regular, open and honest communication.
  • Jill demonstrates level headedness in all business dealings, listens actively and engages appropriately when in disagreement.
The alternative versions aren't hideous, but they don't flow quite as well, and – being structurally pretty standard – they don't do much for your sentence-structure variety. They're just not as swish.

The participle-phrase-upfront structure is particularly useful when writing personal appraisals. Clearly, you shouldn't write every sentence in this style, but the odd one will give that variety and help you to shoehorn in more observations.

(Reason 3) An infinitive can usually replace in order to.

To reduce your wordcount, you can usually replace "in order to" with "to" without any loss of meaning.
  • The doctors joined the A&E team in order to gain experience.
  • In 2008, scientists discovered bacteria that had adapted in order to live in hairspray.
Even though it might add two to your wordcount, "in order to" does have an advantage. It makes it clear that the text that follows is the reason for performing the action. (It's like using "so as to.")
  • Jack built a metal detector to find gold nuggets.
  • (Here, to find gold nuggets could be an adjective modifying detector. Jack's device might be a gold-nugget-only detector.)
  • Jack built a metal detector in order to find gold nuggets.
  • (With "in order to," it's clear that to find gold nuggets is an adverb modifying built. It tells readers why he built the metal detector, which readers will now take to be a standard metal detector.)
There's another advantage. Using "in order to" puts a little more emphasis on the reason for the action.

These two advantages are not normally why people use "in order to." Mostly, it's used because writers think it sounds more highbrow. It's not highbrow. It's inefficient.

That said though, "in order not to" (i.e., the negative version) flows far better than "not to."
  • In order not to offend anybody, in order not to seem to be partisan, the term "terrorist" is virtually outlawed in US-run news agencies. (Journalist Kevin Meyers)
  • (This reads far better than "Not to offend anybody, not to seem to be partisan....")
Interactive Test
 
 

See Also

What are finite verbs? What are verbs? What are adjectives? What is the subject of a sentence? What is verb tense? What are verbals? What are gerunds? What are infinitive verbs? What are participles?