How do you make a word plural that ends in o preceded by a consonant?
Some nouns ending in o preceded by a consonant are pluralized by simply adding es; these words must be memorized, because there is no simple rule to explain the differences. Examples:echo, echoeshero, heroespotato, potatoestomato, tomatoestornado, tornadoestorpedo, torpedoesThere are also some nouns ending in o preceded by a consonant that simply add s; for example:auto, autoskilo, kilosmemo, memosphoto, photospiano, pianossoprano, sopraos