形容词形式是foot，意思是和脚有关的，例如：
1.It was a very severe accident and he lost part of his foot.那是一场非常严重的事故，他有一只脚残废了。
2.There's some grit in the shoe, and it hurts my foot.鞋里有沙子，硌脚。
3.A man in a village had a sore on his foot which bled and oozed1 pus. He couldn't bear the pain and moaned without stop.村子里有一个人，脚上生疮，流血流脓，痛得难以忍受，不停地呻吟着。
