The boy is running.
Meaning: This means that the boy is moving quickly. It's like saying, The boy is racing across the field.
Choice of Words: The refers to a specific boy. Boy is a male child. Is running means that the boy is moving quickly by putting one foot in front of the other. When you put them together, "The boy is running" means that a specific boy is moving quickly by putting one foot in front of the other.
Alternative Expressions
Related Expressions