what are consonants and how are they used.

Answer 1

Consonants are those letters that are NOT vowels: a, e, i, o, u. Sometimes y is used as a consonant and sometimes it's used as a vowel.

This site has more information about consonants.

http://www.wisegeek.com/what-is-a-consonant.htm

Answer 2

consonants are the letters of the alphabet except for a,e,i,o,u.

Answer 3

Correct! absolutely!