The subject is who or what the sentence is about.

The predicate tells what that subject is doing and includes a verb, an action word or a state of being.

Examples: (subject is in bold, predicate is in italics)
Mr. Vega, my neighbor, painted his house.
Eva likes to put strawberries in her cereal.

For other examples, watch the video below:

[youtube=http://www.youtube.com/watch?v=I7S_B9GcRI0&hl=en&fs=1&color1=0x234900&color2=0x4e9e00&border=1]