You can make me happier by guiading me in correct way.

What is infinitive?
Please write me the diffenation plus functions.
Secod.. what is vowel
how many vowels are there in english?

Infinitive: http://www.usingenglish.com/glossary/infinitive.html

Vowel: http://www.usingenglish.com/glossary/vowel.html

I hope that helps. ;-)

AEIOU are always vowels, while Y can behave as a vowel (fly) or a consonant (yesterday). ;-)