In Turkish one can use the trigger words “eğer” or “şayet” meaning if, lest or unless to show when a sentence is conditional but they are not required.
The “if” suffix in Turkish is “sa/se” which is an e-type suffix. One simple example would be “If there is/are” - “Varsa” and the negative equivalent “If there isn’t/aren’t” - “Yoksa”. This conditional tense is formed by adding (y)se or (y)sa to the end of the tense marker plus the personal ending.
The endings for each pronoun are:
*The two past tense forms written below always take a “y” also regardless of two vowels being next to each other.
Gelsem - If I were to come (If I came). Gel - come + sem - If I
Gelirsen - If you (usually) come. Gelir - usually come + sen - If you
Geliyorsanız - If you all are coming. Geliyor - coming + sanız - If you all
Geldiysek - If we came. Geldi - came + sek - If we
Gelseydiler* - If only they had come.
Gelecekse - If he, she, it (will) come. Gelecek - will come + se - If he, she, it
*This one switches its position.
To make the expression negative you simply add me or ma after the verb stem.
Gelmesem - If I were not to come
Gelmeyeceksen - If you will not come
Gelmezse - If he, she, it doesn’t come
Gelmiyorlar - If they aren’t coming
Gelmeseydik - If only we had not come
Gelmediyseniz - If you all didn’t come.