fell down

问题描述:

fell down

fall down 的过去式
跌倒,下落

fell down
倒下,跪拜

fell down 是fall down的过去式,义为跌到(证明是不会令人满意的,失败)
fall off = fall down from...:(从……)掉下
The sky fell down :天上掉下

跌到fall down的过去式