The boy runs fast in the race.
Meaning: This sentence depicts a young male child participating in a footrace and moving at a high velocity.
Choice of Words: Boy is a noun referring to a young male child. Runs is a verb describing the act of moving quickly on foot. Fast is an adjective describing something with high speed. In is a preposition indicating the context or environment in which something occurs. Race is a noun referring to a competition of speed, especially on foot.
Alternative Expressions
Related Expressions