Breakdown of Iscriviti al gruppo di volontari che lavora stasera.
di
of, from
il gruppo
group
lavorare
to work
a
to / at
Questions & Answers about Iscriviti al gruppo di volontari che lavora stasera.
How is iscriviti formed, and why is ti attached to the end?
Iscriviti comes from the reflexive verb iscriversi (to sign oneself up). Because this is an affirmative command directed at one person informally (the tu form), the reflexive pronoun ti must be attached directly to the end of the conjugated verb (iscrivi). This merges them into the single word iscriviti.
The English translation says "for the group", so why does the Italian use al instead of per il?
In English, we "sign up for" something, but the Italian verb iscriversi is followed by the preposition a (to). You are literally saying "enroll yourself to". Because gruppo requires the definite article il, the preposition a and the article il combine to form the articulated preposition al.
Since volontari is plural, why is the verb lavora in the singular form?
Is stasera considered a single word?