在英语中，老人坐在路边可以用以下几种表达方式来描述：
An elderly person sits on the side of the road.
An old man/woman sits by the side of the road.
An elderly man/woman sits on the sidewalk.
An old person sits on the pavement.
这些表达方式均来自于英语的日常用语，可以用来描述一个老年人坐在路边或人行道上。
下面是一些例句及其中文翻译：
I saw an elderly person sitting on the side of the road when I was driving home. 我开车回家时看到有个老人坐在路边。
An old man was sitting by the side of the road, begging for money. 有个老人坐在路边，乞讨钱。
I stopped to help an elderly woman who was sitting on the sidewalk and needed assistance. 我停下来帮助一个坐在人行道上需要帮助的老女人。
I saw an old person sitting on the pavement, looking lost. 我看到有个老人坐在人行道上，看起来很迷茫。
An elderly person sits on the side of the road.
An old man/woman sits by the side of the road.
An elderly man/woman sits on the sidewalk.
An old person sits on the pavement.
这些表达方式均来自于英语的日常用语，可以用来描述一个老年人坐在路边或人行道上。
下面是一些例句及其中文翻译：
I saw an elderly person sitting on the side of the road when I was driving home. 我开车回家时看到有个老人坐在路边。
An old man was sitting by the side of the road, begging for money. 有个老人坐在路边，乞讨钱。
I stopped to help an elderly woman who was sitting on the sidewalk and needed assistance. 我停下来帮助一个坐在人行道上需要帮助的老女人。
I saw an old person sitting on the pavement, looking lost. 我看到有个老人坐在人行道上，看起来很迷茫。