Putting particle –kah on the object, subject or action in question;
- Kamu sudah makankah?
- Have you eaten? or Did you eat?
Using the word apa or ‘apakah’ in the beginning;
- Apakah kamu sudah makan?
- Have you eaten? or Did you eat?
In casual conversation you can drop the word ‘apakah’.
- Kamu sudah makan?
- Have you eaten? or Did you eat?
Sometime people shorten ‘apakah‘ to just ‘apa‘.
- Apa kamu sudah makan?
- Have you eaten? or Did you eat?