The simple predicate is the word or words that tell us what specific action the subject is taking. The simple predicate is always a verb, or in other words, it's always a word that shows action. In the above example, 'walks' is the verb, or action word, that the boy does.
Dear God I want to thank you for everything you have been providing with. The only miracle I want is my talent to bring out more can you please help me with that,