前用介词on，例如：
1、Here it becomes very important to keep our head on shoulder.此时，保持头脑清醒时非常重要的。
2、He felt a tap on his shoulder and turned round.他觉得有人轻轻拍他的肩膀便转过身来。
3、The gentle touch of his hand on her shoulder made her jump.他的手轻轻地触了一下她肩膀便使她跳了起来。
前用介词on，例如：
1、Here it becomes very important to keep our head on shoulder.此时，保持头脑清醒时非常重要的。
2、He felt a tap on his shoulder and turned round.他觉得有人轻轻拍他的肩膀便转过身来。
3、The gentle touch of his hand on her shoulder made her jump.他的手轻轻地触了一下她肩膀便使她跳了起来。
