具體指腳時或英尺時的復(fù)數(shù)，就用feet如How many feet do you have I have two.He is 6 feet tall.foot：用在短語中或構(gòu)成一些詞：如on foot步行，也可用with feet（但不是步行，而是用腳的意思），但不用with foot的football；footprint腳印如I often go home on foot.Punching with fists and kicking with feet are allowed in taekwondo.跆拳道允許用拳擊和用腳踢。