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

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 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 down和fall off的区别 fall down和fall of和fall from的区别 请问 fall down fall off fall away有什么区别? fall down into,fall down,fall down onto,fall into有什么区别 fall off fall from fall down fall fall off fall from fall down fall fall down fall down /drop down有什么区别? fall down 与 fall down 这两个短语存在吗? fall down fall off all over fall on falling 这几个词的区别.题目再清楚些fall down fall off fall over fall on falling