Question

Four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in liberty, and dedicated to the proposition that all men are created equal. In this sentence i need to know what part of speech these words or phrases are: four, and seven, ago, fathers brought, on, continent, new, liberty, and, that, are created. these are all.

Answer 1

This is one of the best sites online to help you learn to recognize the different parts of speech:
http://www.chompchomp.com/terms.htm

You can also look up each word:
http://www.dictionary.com

I'll do the first three for you; you do the rest and then re-post if you want someone here to check them for you.

four = adjective
and = conjunction
seven = adjective

Answer 2

"four" and "seven" describe nouns

"fathers" = noun

"brought" = verb

"on" = preposition

You can look the other words up in a dictionary to find their part of speech.

http://www.merriam-webster.com/

We'll be glad to check your answers.

Answer 3

this is all wrong