My English teacher is a wolf in sheep's clothing.,clothing,为什麼用ing形式

My English teacher is a wolf in sheep's clothing.,clothing,为什麼用ing形式
My English teacher is a wolf in sheep's clothing.,clothing,为什麼用ing形式

My English teacher is a wolf in sheep's clothing.,clothing,为什麼用ing形式
clothing 强调的是（服装）总称,clothes 也是衣服,一般的名词使用比较具体点,而cloth更注重是材料（布料）

clothing为名词。衣服的意思

cloth布 clothes衣服 clothing衣服