句子分三部分理解
the old women 这位年老的妇女
was badly injured in the leg from the fall因摔倒而严重伤到了腿
caused by me 由我造成
be injured in伤到哪里
be injured from 因何而伤
两者并列就成了be injured in。。。from。。。
the fall跌倒
be injured in the leg腿受伤
from the fall caused by me由我引起的摔倒/跌倒
the fall, 那次的摔倒
in the leg from 不是短语
我造成那个老妇人的跌倒, 使她的腿严重受伤