Questions & Answers about Il mio cane è scomparso. Qualcuno lo ha visto?
Why does it use qualcuno when the English translation says "anyone"?
Why is the past tense formed with è (è scomparso) instead of ha?
The verb scomparire (to disappear) describes a change of state. In Italian, verbs that describe movement or a change of state use essere (to be) as their helping verb in the past tense. Because it uses essere, the ending of the past participle must match the masculine singular subject (il cane), making it scomparso.
Is scomparso an irregular verb?
Yes! It is the irregular past participle of the verb scomparire (to disappear).