The pronoun '
se' has many uses, as you'll discover on your journey.
One of its many uses is that of 'reflexive pronoun' (which is used with both reflexive verbs and pronominal verbs).
I believe your example is asking, "Has she/he left yet?"
In that case, you'd be dealing with a pronominal verb. The infinitive is '
irse'. The affixed pronoun '
se' is a reflexive pronoun.
When 'irse' is conjugated, the suffixed '
se' is relocated, and assumes a form that agrees in person with the subject, as does the verb's ending.
This particular conjugation is the 'present perfect', so there is a conjugated auxiliary verb preceding the participle '
ido'.
IRSE - Present Perfect Tense
| Person | Singular | Plural |
|---|
| 1st | me he ido | nos hemos ido |
| 2nd | te has ido | os habéis ido |
| 3rd | se has ido | se han ido |