Have you ever verbed before?
Put a verb into base TA then add koto ga arimasu ka?
To ask the question, have you ever verbed before?
VTA + ことがありますか? Have you ever verb'ed' before?
ex.1. Disneyland に行った ことがありますか? (Disneyland ni itta koto ga
arimasu ka?) Have you ever been to Disneyland before?
Occasionally the が in the above example is omitted or exchanged for a ha
as may be expedient. In plain form or less polite language you might hear
VTA + こと ある(koto aru.)
ex. 2. 納豆 を食べた ことが あります か?( natto o tabeta koto ga arimasu
ka?) Have you ever eaten natto before.
Bonus Word - (before eating at the table in Japan you always say)
itadakimasu - いただきます ー to humbly partake