PLURALS. To form a plural in Spanish, we add an S. One street is: una calle, Two streets are: dos calles. Here are some more: bicycle/bicycles - bicicleta/bicicletas, car/cars - carro/carros. If a word ends in a consonant, we add ES, for example: tren/trenes, bar/bares. Some words are always plural: trousers, scissors - pantalones, tijeras