She fell off a ladder and broke her arm.
她从梯子上掉下来，摔断了胳膊。
She cycled round the corner, lost her balance and fell off.
她骑车拐弯时失去平衡，摔了下来。
I fell off the ladder.
我从梯子上跌了下来。
Two or three glasses fell off and smashed into pieces.
两三只杯子掉了下来，摔得粉碎。
Her cap fell off in the street and blew away
她的帽子掉在大街上，被风吹走了。