举起手用英语可以说成"raise your hand"。其来源可能来自于在大多数学校里，学生举起手来提问或答问，老师可以轻松地辨认出谁在举手。

例句：

Raise your hand if you have any questions. (如果你有任何问题，请举起你的手。)

Please raise your hand before speaking. (请在发言前举起你的手。)

The teacher asked the students to raise their hands. (老师要求学生们举起手。)