wear是强调穿在身上的状态wear后可以用CLOTHES
dress in强调装扮,打扮dress sb in或sb be dressed in
dress 既可表示穿着衣服（状态）,也表示穿上衣服（动作）.
dress +sb.:She dressed her baby.
He dresses well.
人＋ Be dressed in +衣服.
Wear：只表示穿的状态.“穿着”
She is wearing a new coat.
Put on 表示穿的动作及过程.
He put on his coat and went out.
Have on 穿着,戴着（状态）