把 from 換成off 會(huì)更好．
如果A原來(lái)是on B的,那么摔/掉下來(lái)就要用 fall off
例如：
fall off the chair (椅子) 對(duì)應(yīng) on the chair
fall off the roof (屋頂) 對(duì)應(yīng) on the roof
但是如果描寫(xiě)摔下來(lái)之前的情況,如果用的介詞不是on而是at,in,之類的,就要用A falls from B
例如：
falls from a height of 500 meters (500米的高度) 對(duì)應(yīng) at a height of 500 meters
falls from the sky (天空) 對(duì)應(yīng) in the sky
falls from power (權(quán)力) 對(duì)應(yīng) in power
falls from heaven (天堂) 對(duì)應(yīng) in heaven