sürdürdün

Sürdürdün is a Turkish verb form. It is the second-person singular simple past tense of the verb sürdürmek, which means to sustain, maintain, or keep up something over time. The form indicates that the addressed person continued an action or kept something going in the past.

In use, sürdürdün typically appears with an explicit object or clause specifying what was continued. Examples include: Projeyi sürdürdün (You continued the project) and Çalışmayı sürdürdün (You kept working). Turkish predicates are often used without an explicit subject, so the subject you is understood from context.

Morphology and construction: the past tense for the second person singular is formed with the suffix -dün, attached to the verb stem. For sürdürmek, the stem is sürdür-, so the resulting form is sürdürdün. Like other Turkish verb forms, this does not carry gender information, and the subject pronoun is commonly omitted when it is clear from context.

Relation to other forms: sürdürmek is the infinitive form. Other persons and tenses are built on related stems and endings, such as different person endings in past or present tenses, but sürdürdün specifically marks you in the past.

Usage notes: The verb conveys continuity or persistence in a past timeframe and is commonly used in narrative or conversational Turkish. It emphasizes that the action was carried on up to a point in the past, rather than beginning anew.