Why is "he is at home" not correct?
It should be correct now.
Why can't this be He/She is in the house?
I think "ada di" means "at" rather than "in". "Di" alone would maybe be "in"
Would "Dia di rumah" be wrong?
Not necessarily, although this is more "she is in a/the house". "ada" is added to specify that s/he is currently at the house. You can always enter a house and say "Ada ?", and that would mean "Is _ here?"
So is 'ada' like the Spanish 'estar'?
this can be he or she is at the house or home
She is at the house should be accepted.
since Dia means both "She" and "He", how do you know which one is intended?
why is "she is in the house" wrong?
Why am i here
Baru sadar, ternyata bahasa Indonesia cukup rumit wkwk