Questions & Answers about Ben evde kalmakta ısrar ediyorum.
Because ısrar etmek selects a complement in the locative case (think “insist in/on something”). With a verb, the locative is formed on the infinitive: -mak + -ta/-te → -makta/-mekte.
Dative -a/-e (as in -maya/-meye) is used with other verbs like başlamak (to start), çalışmak (to try), etc., but not with ısrar etmek.
No. Israr etmek is intransitive and does not take a direct object in the accusative (-ı/-i/-u/-ü). You say:
- X’te/-ta ısrar etmek (insist on X), e.g., evde kalmakta ısrar etmek.
- With a plain noun: Bu fikirde ısrar ediyorum (I insist on this idea).