"He is rich."

Translation: Dia kaya.

[anothernobody]

When do I use "ada" and "adalah"? Are there other forms of am/are? When are they used?

[JoeyLim2410]

This one I'm not sure sorry

[akucintaDani]

"ada" is "there is/there exists"
"Adalah" is "the state of being", like "I am rich"

[Audrey329869]

What is the difference between "dia" and "ia" ? Thank you.

[haqqiabdillah]

"dia" is unformal. "ia" is more formal and it usually used to older person (parents, teacher, etc).

[JoeyLim2410]

I don't think there is a difference

[akucintaDani]

The only difference is formal and informal, other no difference