骑自行车摔倒用英语怎么说

"fall off a bike" 或 "fall from a bike" 是指骑自行车摔倒的意思。

来源：这个短语的来源可能源于人们在骑自行车时摔倒的情况。

英文例句：

I fell off my bike and scraped my knee. (我骑自行车摔倒了，擦伤了膝盖。)
He fell from his bike and broke his arm. (他骑自行车摔倒了，断了胳膊。)
She fell off her bike and twisted her ankle. (她骑自行车摔倒了，扭伤了脚踝。)