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INGLÉS TÉCNICO 1 NUTRICIÓN
Plural forms of nouns
The plural form of most nouns is created simply by adding the letter s.
more than one snake = snakes
more than one ski = skis
more than oneBarrymore = Barrymores

Words that end in -ch, x, s or s-like sounds, however, will require an -es for the plural:
more than one witch = witches
more than one box = boxes
more than one gas =gases
more than one bus = buses
more than one kiss = kisses
more than one Jones = Joneses
Note that some dictionaries list "busses" as an acceptable plural for "bus." Presumably, this is becausethe plural "buses" looks like it ought to rhyme with the plural of "fuse," which is "fuses." "Buses" is still listed as the preferable plural form. "Busses" is the plural, of course, for "buss," aseldom used word for "kiss."
There are several nouns that have irregular plural forms. Plurals formed in this way are sometimes called mutated (or mutating) plurals.
* more than one child = children* more than one woman = women
* more than one man = men
* more than one person = people
* more than one goose = geese
* more than one mouse = mice
* more than one barracks= barracks
* more than one deer = deer
And, finally, there are nouns that maintain their Latin or Greek form in the plural. (See media and data and alumni, below.)
* more than one nucleus= nuclei
* more than one syllabus = syllabi
* more than one focus = foci
* more than one fungus = fungi
* more than one cactus = cacti (cactuses is acceptable)
* more than onethesis = theses
* more than one crisis = crises*
* more than one phenomenon = phenomena
* more than one index = indices (indexes is acceptable)
* more than one appendix =appendices (appendixes is acceptable)
* more than one criterion = criteria
A handful of nouns appear to be plural in form but take a singular verb:
* The news is bad.
* Gymnastics is fun to...