To Buy vs Buying 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 buy (Infinitive)

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

Example

I want to buy a new car.

Buying (Gerund)

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

Example

Buying clothes online is convenient.

Where can infinitives/gerunds be placed in a sentence?

To buy (Infinitive)

  • 1Subject

    To buy a house requires careful planning.

    To buy a house requires careful planning.

    • "*To buy* a house" serves as the subject of the sentence.
    • Infinitive phrase (subject) + verb (requires) + noun phrase (careful planning).
  • 2Object

    She wants me to buy groceries.

    She wants me to buy groceries.

    • "Me *to buy* groceries" is the object of the verb "wants."
    • Noun (She) + verb (wants) + noun phrase (me *to buy* groceries).
  • 3Adjective Modifier

    I need a shopping list to buy all the items.

    I need a shopping list to buy all the items.

    • "*To buy* all the items" modifies the noun "shopping list."
    • Noun (I) + verb (need) + noun phrase (a shopping list *to buy* all the items).

Buying (Gerund)

  • 1Subject

    Buying a car can be a complex process.

    Buying a car can be a complex process.

    • "*Buying* a car" is the subject of the sentence.
    • Gerund (subject) + verb (can be) + noun phrase (a complex process).
  • 2Object

    I enjoy buying books at the bookstore.

    I enjoy buying books at the bookstore.

    • "*Buying* books at the bookstore" is the object of the verb "enjoy."
    • Noun (I) + verb (enjoy) + gerund (*buying* books at the bookstore).
  • 3Object of Preposition

    She has a passion for buying antique furniture.

    She has a passion for buying antique furniture.

    • "For *buying* antique furniture" is the object of the preposition "for."
    • Noun phrase (She) + verb (has) + noun phrase (a passion for *buying* antique furniture).

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

She plans to buy a new laptop next month.

They hope to buy a beach house in the future.

He wants to buy a designer handbag.

We decided to buy a new TV for the living room.

They agreed to buy a gift for their friend's birthday.

Verbs Taking Gerunds as Objects

Example

She enjoys buying fresh produce at the farmer's market.

They recommend buying organic products for a healthier lifestyle.

I dislike the idea of buying used electronics.

He avoids buying products with excessive packaging.

Can you imagine yourself buying a luxury yacht?

Verbs Taking Both Infinitives and Gerunds as Objects

Example

She likes to buy new clothes every season. She likes buying new clothes every season.

We started to buy groceries online. We started buying groceries online.

He began to buy organic food. He began buying organic food.

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