A boy was swimming in a river and went so far out that he was in danger of(有……危险) drowning(淹死).
He saw a man walking by and shouted loudly for the man to save him.
But instead of saving him, the man began to tell the boy how stupid he was to swim in deep water.
Finally, the boy shouted, “Please save me now, and save the teaching for later!”
MORAL: Help is more useful than advice.