1.He is wearing a white coat.
2.He is in a white coat.
3.He is dressed in a white coat.
㈡ put on,dress,in,wear,with的區別
1)put on 和pull on 穿上；戴上。相當於及物動詞，以衣物作賓語，著重於穿、戴的動作。put on 為普通用語；pull on多用於穿襪子、戴手套或比較隨便地穿上。①It』s cold outside.You』d better put on your hat.外面很冷，你最好戴上帽子。②She put /pulled on her coat and went out of the room hurriedly.她穿上大衣，匆忙地走了。(2)wear 和have on 穿著；戴著。相當於及物動詞，有衣物作賓語，著重於穿、戴的狀態。have on不用於進行時態。①He always wears/has on black shoes.她一直穿著黑鞋。②She is wearing/has on a red coat她穿著紅大衣。(3)dress 穿；戴。可用作及物動詞，以人作賓語，即dress sb.（給某人穿衣）；也可用作不及物動詞。既可強調動作，又可表示狀態，表示狀態時常用be dressed in 結構。此外dress還可用作名詞。①Mary is dressing her daughter.瑪麗正給她女兒穿衣服。②She usually dresses well.她總是穿得很好。③He is dressed in a black jacket.他穿著黑上衣。(4)in 穿著；戴著。是介詞，以衣物或表示顏色的名詞作賓語，表示狀態。構成的介詞短詞可作表語或定語。①My brother is in a blue jacket.我弟弟穿著藍上衣。②The boy in a blue jacket is my brother.穿藍上衣的孩子是我弟弟。③My brother is in blue.我弟弟穿著藍衣服。wear 「穿著；戴著」，表示狀態，賓語可以是衣帽，也可以是飾物、獎章等。例如：
You』d better wear blue or black pants with blown shoes.
穿棕色鞋子的時候, 最好要穿藍色或黑色褲子。
Why does he often wear dark sunglasses? 他為什麼經常戴著深色的太陽鏡？
㈢ 他穿著一件藍外套He is dress/He is dressing / He is dressed /in a blue coat.那個對都是什麼意思
正確句子： he is dressed in a blue coat 意為：他穿著一件藍色的外套，其同意句為：he is wearing a blue coat. 而he is dress 和he is dressing都是錯誤用法，無意義。