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Remember this!

The present tense form of 'dun' is dun or duns. Example: He duns his clients for overdue payments. (He duns his clients for overdue payments.)

Definition of “dun”

to demand payment from someone, especially persistently or forcefully
to make repeated demands or requests for payment

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	dun
Present Continuous	dunning
Present Perfect	dunned

Present Simple

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

Subject + Verb + (Object)

Example

He duns his clients regularly.

Example

They dun the debtor for the outstanding amount.

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 dunning the customer for payment.

Example

They are dunning the client for the overdue balance.

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 dunned him multiple times for the money he owes.

Example

They have dunned their customers for payment.

dun 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, 'dun' 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).