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Remember this!

The present tense form of 'buy' is buy or buys. Example: He buys groceries every Sunday. (He buys groceries every Sunday.)

Definition of “buy”

to acquire possession, ownership, or rights to something by paying for it
to obtain in exchange for money or its equivalent

Tense sentence structure and examples:

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Notes from a Native English Speaker

Here are the general structures of a present and past participle. Remember, some verbs have an irregular form and may not follow this structure: Present Participle: [Verb] -ing Past Participle: [Verb] -ed

Present Simple	buy
Present Continuous	buying
Present Perfect	bought

Present Simple

The simple present tense is used to describe habitual, regular, or general facts.

Subject + Verb + (Object)

Example

She buys flowers for her mother.

Example

They buy clothes online.

Present Continuous

The present continuous tense is used to describe actions happening at the moment of speaking or future plans.

Subject + am/is/are + Present Participle + (Object)

Example

I am buying a gift for my sister.

Example

They are buying a new car.

Present Perfect

The present perfect tense is used to indicate actions completed at some point in the past but relevant to the present.

Subject + have/has + Past Participle + (Object)

Example

She has bought a new house.

Example

They have bought tickets for the concert.

buy Subject-Verb Agreement

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Notes from a Native English Speaker

Subject-verb agreement means that a subject and its verb match. They’re either both plural or both singular. A singular subject takes a singular verb. - Example: The cat is sleeping. A plural subject takes a plural verb. - Example: The cats are sleeping.

In the present tense, 'buy' follows the typical rule of adding 's' when the subject is third person singular (he, she, it), but it remains the same for all other subjects (first person, second person, and plural subjects).