Meaning: The grass was moving gently back and forth because of the wind.
Choice of Words: Swayed - to move or swing gently from side to side.
Meaning: This means that the grass was moving gracefully and rhythmically in the soft wind.
Choice of Words: Danced is a verb that means to move in a graceful and rhythmic way. Soft means not loud or harsh.
Meaning: This means that the thin, flat leaves of grass were moving back and forth in the gentle wind.
Choice of Words: Blades are the thin, flat leaves of grass. To and fro means back and forth.