... standing " at the door. (那時他「正」站在門口; standing 是受詞補語) There are hundreds... through the room, "picking" up all the trash.(分詞與主要動詞同時發生;表示主動:當時...
... standing " at the door. (那時他「正」站在門口; standing 是受詞補語) There are hundreds... through the room, "picking" up all the trash.(分詞與主要動詞同時發生;表示主動:當時...