Se forma aadiendo la terminacin "-s"

- One book Two books

La palabra termina en "sh", "ch", "s", "x", "z", "o" AADE "es"

- One church Two churches / - One bus Two buses

La palabra termina en "y"
Si es consonante + "y" cambia la "y" por "i" + "es"
Si es vocal + "y" aade "s"

- One baby Two babies / - One boy Two boys