To Run vs Running Infinitives & Gerunds

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Notes from a Native English Speaker

Infinitives: An infinitive is the base form of a verb, usually preceded by the word "to" (e.g., to swim, to eat, to learn). It can function as a noun, adjective, or adverb in a sentence. Infinitives are often used to express intentions, purposes, desires, or potential actions. Gerunds: A gerund is the -ing form of a verb (e.g., swimming, eating, learning). It’s different from a “present participle” which functions as a verb tense. A gerund can be the subject, object, or complement of a sentence.

When and How to Use Each Expression?

Get a sense of when and how each expression can be used through the following examples!

To run (Infinitive)

Purpose or Intention: Use the infinitive "to run" when you want to express a purpose, intention, desire, or potential action

Example

I want to run in the marathon to challenge myself.

Running (Gerund)

Activity or Experience: Use the gerund "running" when you want to refer to the activity itself or the experience as a noun.

Example

Running helps to reduce stress and improve mental health.

Where can infinitives/gerunds be placed in a sentence?

To run (Infinitive)

  • 1Subject

    To run is a great way to improve cardiovascular fitness.

    To run is a great way to improve cardiovascular fitness.

    • "*To run*" serves as the subject of the sentence.
    • Infinitive phrase (subject) + verb (is) + noun phrase (a great way to improve cardiovascular fitness).
  • 2Object

    She wants me to run with her in the park.

    She wants me to run with her in the park.

    • "Me *to run* with her in the park" is the object of the verb "wants."
    • Noun (She) + verb (wants) + noun phrase (me *to run* with her in the park).
  • 3Adjective Modifier

    I need good shoes to run long distances.

    I need good shoes to run long distances.

    • "Good shoes *to run* long distances" modifies the noun "shoes."
    • Noun (I) + verb (need) + noun phrase (good shoes *to run* long distances).

Running (Gerund)

  • 1Subject

    Running is my favorite form of exercise.

    Running is my favorite form of exercise.

    • "*Running*" is the subject of the sentence.
    • Gerund (subject) + verb (is) + noun phrase (my favorite form of exercise).
  • 2Object

    I enjoy running in the park every morning.

    I enjoy running in the park every morning.

    • "*Running* in the park" is the object of the verb "enjoy."
    • Noun (I) + verb (enjoy) + gerund (*running* in the park).
  • 3Object of Preposition

    He has a passion for running marathons.

    He has a passion for running marathons.

    • "For *running* marathons" is the object of the preposition "for."
    • Noun phrase (He) + verb (has) + noun phrase (a passion for *running* marathons).

Verbs Taking Infinitives/Gerunds as Objects

The following are verbs that can take only the base form of the verb (infinitive), only the -ing form (gerund), or both.

Verbs Taking Infinitives as Objects

Example

He plans to run a marathon next year.

They hope to run a race together someday.

She wants to run a 5K race for charity.

We decided to run in the morning for better energy.

They agreed to run a half marathon together.

Verbs Taking Gerunds as Objects

Example

She enjoys running on the beach during sunset.

They recommend regular running for a healthy lifestyle.

I dislike the idea of running in the rain.

He avoids running on hard surfaces to prevent injuries.

Can you imagine yourself running a marathon?

Verbs Taking Both Infinitives and Gerunds as Objects

Example

I like to run in the morning. I like running in the morning.

They started to run as a form of exercise. They started running as a form of exercise.

She began to run competitively. She began running competitively.

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