fall down 与 fall down 这两个短语存在吗?

fall off 与 fall down 区别 fall off与fall down与fall into区别 请问fall off,fall to与fall down的区别 fall off fall from fall down fall fall off fall from fall down fall fall down fall down 与 fall down 这两个短语存在吗? fall off 、fall down、 fall over区别 fall off 与fall down有何区别? fall off 与fall down的区别?它们怎么用? fall off fall over fall behind fall down 区别的 fall down. fall through. fall over. fall on 区别 fall与fall down区别,字典上都有跌倒,摔倒的意思啊,我只知道常用fall down .短文改错中We were having our Chinese class when our teacher suddenly slipped and fell.”为什么是正确的?我觉得应该在fell后面加一个dow 用fall down造句 fall down into the fall down的意思 fall down的反义词 fall down 翻译,