当我们在路上遇到一个老人摔倒，，用英语怎么说
当我们在路上遇到一个老人摔倒，，用英语怎么说 We are on the way when a old man is falling.现在时We were ...
当我们在路上遇到一个老人摔倒，，用英语怎么说 We are on the way when a old man is falling.现在时We were ...