具体指脚时或英尺时的复数,就用feet 如 How many feet do you have? I have two. He is 6 feet tall. foot:用在短语中或构成一些词: 如 on foot步行,也可用with feet(但不是步行,而是用脚的意思),但不用with foot的 football; footprint脚印 如 I often go home on foot. Punching with fists and kicking with feet are allowed in taekwondo. 跆拳道允许用拳击和用脚踢.