foot跟feet有什麼區別

具體指腳時或英尺時的複數，就用feet如How many feet do you have?I have is 6 feet ：用在短語中或構成一些詞：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footballfootprint腳印如I often go home on hing with fists and kicking with feet are allowed in taekwondo.跆拳道允許用拳擊和用腳踢。