Hi,

I'm not good in grammar, but I found this pages there more clear if you read them.

Plural Noun Forms
http://webster.commnet.edu/grammar/plurals.htm


Possessive 's:
's to a singular noun
(') to a plural noun

http://grammar.englishclub.com/nouns-possessive.htm


Determiners: Some and Any
http://grammar.englishclub.com/adjectives-determiners-some-any.htm


Uncountable Nouns:
http://grammar.englishclub.com/nouns-un-countable_2.htm

Index Guide to Grammar and Writing and Principles of Composition.
http://webster.commnet.edu/grammar/index2.htm

MAF huh
Good luck!

Maria D. Ferdez.
---
Don't like Luthor, unfinished, untitled and crossover story, and people that promises and don't deliver. I'm getting choosy with age.
MAF