La Tomatina: singular present -ar, affirmative imperative (-a)

Present tense -ar verbs in 1st, 2nd, 3rd person singular (-o, -as, -a). Use the affirmative imperative (also known as a positive command) to tell somebody to do something or give instructions. When talking to somebody familiar to you (tú) with the affirmative imperative with -ar verbs, use the ending -a. [s] sounds like 'siempre', [z] sounds like 'empezar' and [ce] sounds like 'entonces'. La Tomatina is a Spanish festival in Buñol, where participants throw tomatoes at each other.