Learn Italian: Questi sono i volontari che aiutano la comunità. - These are the volunteers who help the community.

Questi is the masculine plural form of the word for 'this/these'. It acts as a pronoun that agrees with i volontari (the volunteers), which is a masculine plural noun. If we were pointing out a single volunteer, we would say Questo è il volontario.

Can che mean 'who' as well as 'that'?

Yes! In Italian, the relative pronoun che is incredibly versatile. It is used for both people ('who') and things ('that' or 'which'). Here, it links the volunteers to the action they are doing, so it translates perfectly to 'who'.

Why is the verb aiutano conjugated in the 'they' form?

The word che stands in for i volontari (the volunteers) as the subject of the second half of the sentence. Since 'the volunteers' is a third-person plural subject ('they'), the verb aiutare (to help) must take the 'they' ending, becoming aiutano.

Why does comunità have an accent mark on the final letter?

Many Italian words that end in a stressed vowel, like comunità (community) or città (city), have a written accent mark. A handy trick to remember: these accented words don't change their endings in the plural. 'The communities' would simply be le comunità.