◆ fall off；fal l down；fall onto；fall into
◇ fall off用作及物动词，表示“从……上落下，掉下，摔下”。如：
The house moved and a few pictures fell off the wall，but that was all．
房子动了动，几幅画从墙上掉了下来，就这些。
He had fallen off a ladder and hurt his leg． 他从梯子上摔下来，伤了腿。
有时，它也可用作不及物动词，表示“落下，掉下，脱落”；也可表示“减少，越来越少”。如：
I watched all the glasses that were on the table fall off． 我看着桌子上的杯子全掉下来。
His supporters were falling off． 支持他的人越来越少了。
◇ fall down通常用作不及物动词，表示“（人）跌倒，摔倒，绊倒”或“（房屋等） 倒塌”。如：
