happppylee
你可能是指 wash one's pants 洗某人的裤子虽然洗裤子英语是 wash pants，习惯的表达方式是wash one's pants, wash my pants, ...one's 是限定词 (determiner)英语在名词前面很常加限定词。限定词包括：冠词：a(n), the指示代词：this, that, these, those形容词性物主代词：my, your, his, her, our, etc名词属格：Jim’s, my mother’s例：ride a bikemeet the manwash one's stepeat his dinner等等。限定词的作用是精确化语言，减少语言的歧义。我是加拿大人，前英语老师
