The dog ran after the ball in the park.
Meaning: This sentence describes the dog's action of chasing the ball in the park.
Choice of Words: Ran is the past tense of the verb run, which means to move quickly on foot. After means following something or someone. Ball is a round object that you can play with by throwing or kicking it. Park is a public area with grass, trees, and often playgrounds. When you put them together, "The dog ran after the ball in the park" describes how the dog was chasing the ball in the park.
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