How do I ask questions about someone's intention like "do you plan on coming back?" In Japanese?
closed as off topic by Darius Jahandarie, dainichi, oldergod, istrasci, snailboat♦ Jun 9 '13 at 1:25
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There are couple of forms to express intentions at least. I guess this three does not cover all story, but they are quite common.
Volitional form creation rules. (See http://tangorin.com/ dictionary for verbs conjugation table.)
If you'd like to ask someone about his intentions you just add か at the end as in any other sentence.
The relevant vocabulary you need is つもり. It expresses intention.
Then change the sentence to a question, either by dropping だ and adding a questioning tone, or by using ですか