Hi! Could you please explain the difference in use of prepositions off, from and down after the verb "fall"? E.g. do you fall off/down/from the tree/chair/roof/bike/ladder/stairs/sky etc?
Top answer
g. bike, ladder. Lose your balance and fall from something towards the ground.
— Michael Chambers Teaching English
g.
bike, ladder.
Lose your balance and fall from something towards the ground.
g.
sky, tree, plane - accidentally or unexpectedly, fall from something very high up towards the ground
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"fell down" is not a phrasal verb when part of the phrase "fell down the stairs". You could say also "I am going / walking down the stairs". Here, "down" is an ordinary preposition. It's the same with mountain.