OK.
Subject=The noun that the sentence is talking about. For example, if I were writing a sentence about you, I would say Victor20 16 ran. The subject would be Victor 20 16.
Predicate=Verb, the "action" word. Examples: Run, eat, play, plying, sing, typing, writing-any of those and loads more.
Here's an example sentence:
The dog ran to the ball. You would circle dog and underline ran :)
Hope this helped :)