Meaning: Raindrops softly descended from the sky and landed on the rooftop.
Choice of Words: Fell describes the downward movement of the raindrops. Gently suggests a soft and delicate touch. Roof is the top covering of a building.
Alternative Expressions
Rain poured heavily on roof.
Meaning: This sentence means that water is falling very heavily from the sky onto the roof of a building.
Choice of Words: The word "poured" means that the rain is falling very heavily. "Heavily" means that the rain is falling in a large amount.
Rain trickled gently on roof.
Meaning: This sentence means that water is falling in a thin stream from the sky onto the roof of a building.
Choice of Words: The word "trickled" means that the rain is falling in a thin stream. "Gently" means that the rain is falling softly and not too hard.