foot 是单数,feet 是复数。
但二者使用却有严格的区分:1,具体指脚时或英呎时的复数,就用feet。How many feet do you have 你有几只脚?I have two.两只。He is 6 feet tall.他是6英呎高。Punching with fists and kicking with feet are allowed in taekwondo.跆拳道允许用拳击和用脚踢。
2,foot是用在短语中或构成一些词中。如,on foot步行,I often go home on foot.我经常步行回家。football 足球,He plays football usually on Saturday afternoon.他通常在周六下午踢足球。footprint 脚印,Walking on the beach will leave footprints.在沙滩上走会留下脚印。