"My uncle is my aunt's husband."
Translation:Paman saya adalah suami tante saya.
Halo teman! The word "adalah" is a predicate marker. So, when the subject is known, it can be dropped, but the speaker would use a stop, a pause in the place of "adalah".
This sentence would be:
Paman saya (pause) suami tante saya.
I hope it it helps.
Selamat belajar! :)
I like your explanation. I usually tell people to use adalah for emphasis the subject. I like you explanation better.