Conditional extent (-dığı sürece)

To express that a situation will continue under certain conditions—meaning "as long as" or "provided that"—Turkish uses the word sürece paired with a special verb form.

as long as
sürece

Forming the Condition

To build this structure, attach the suffix -dık / -dik (or its vowel harmony variants) to the verb stem, followed by a possessive suffix to indicate who is performing the action. Finally, add the word sürece.

Because possessive suffixes usually start with a vowel, the k in -dık softens to ğ. For a third-person subject ("as long as it does"), the ending becomes -dığı or -diği.

As long as the submarine advances slowly, there is no danger.
Denizaltı yavaş ilerlediği sürece bir tehlike yok.
As long as the hull withstands the pressure, we do not sink.
Gövde basınca dayandığı sürece batmayız.

Changing the Subject

The subject of the condition is controlled entirely by the possessive suffix on the verb. For example, "as long as you look" uses the second-person singular suffix (-ın / -in), creating baktığın sürece.

As long as you look at the gauge, we do not have a problem.
Göstergeye baktığın sürece problemimiz yok.

Negative Conditions

To state that something holds true "as long as a subject does not do something", insert the negative suffix -ma or -me directly after the verb stem, before the -dık suffix.

As long as the submarine does not dive, we do not have a pressure problem.
Denizaltı dalmadığı sürece basınç problemimiz yok.
As long as we do not go down to that depth, the hull might not be damaged.
O derinliğe inmediğimiz sürece gövde hasar görmeyebilir.

States and Adjectives

When your condition describes a state or a quality rather than an action—such as being closed, open, or critical—use the helper verb olmak (to be). It takes the exact same suffixes, most frequently appearing as olduğu sürece (as long as it is).

As long as the valves are closed, water does not enter the hull.
Vanalar kapalı olduğu sürece gövdeye su girmez.
As long as the situation is critical, we take strict measures.
Durum kritik olduğu sürece sıkı önlemler alırız.