look sb in the eye中eye为什么不加s

look sb in the eye中eye为什么不加s 英语：look sb in the eye 与 look sb in one's eye 区别 为什么是look sb in the eye而不是eyes? 英语问题 look sb in the eye look in one's eye的意思 这里eye要加s吗为什么 击中某人的眼睛 英文翻译hit sb. in the eye 为什么要用in? 英语翻译Americans look people in the eye,but they think it's rud hit与介词搭配用法为什么是hit sb on the headhit sb in the eye?如何区分 He smiled at the loving look in my eye why don't you look me in the eye? caught one's eye中eye为什么用单数而不是复数