I have a question-I need to compare Spanish nouns in the singular versus plural to English. I know to make it plural in Spanish- I add s to a noun ending in a vowel and es if it is a consonant but I don't know how to actually put the comparison between the two languages into words to answer the question

4 answers

Aren't they very similar?
I'm suppose to tell at least one difference and one similarity-I have the similarity covered-what is the difference
In English there are many, many irregularly formed plurals. In Spanish, there are not.

child - children
man - men
woman - women
ox - oxen

fish - fish
elk - elk
deer - deer

xxx - scissors

alumnus - alumni
alumna - alumnae
cactus - cacti
fungus - fungi

... and many more:
http://www.english-zone.com/spelling/plurals.html
In Spanish there ARE some irregular plurals.

For example, the ending z changes to c in front of e or i
Examples: la cruz = las cruces
el lápiz = los lápices

An accented i or ú adds -es
Examples: el rubi = los rubies
el tabú = los trabúes

2 exceptions with accented last syllable:
el sofá = los sofás & el menú = los menús

An unaccented final syllable ending iin -s has the same plural
Examples: el lunes = los lunes
el viernes = los viernes

Actually the first one (z--->C) is an orthographical change. That means for pronuncation's sake, especially in castellano where "z" is pronounced "th" rather than the Latin American "s"

Sra