请起立用英语表达为“please stand up”，来自于英语动词“please”，意思是“请求”或“祈求”，和“stand up”，意思是“站起来”。例句：

Please stand up if you have any questions. (如果你有任何问题，请起立。)

The teacher asked the students to please stand up. (老师请求学生们起立。)

I asked my friend to please stand up so I could see him better. (我请求我的朋友起立，以便我能看得更清楚。)