应该是: He awoke in the middle of the night to see him softly (going) out of the room. see sb doing sth 看到某人正在做某事 see sb do sth 看到某人经常做某事. 根据你的语境,应该是他醒来的时候看到他正在轻轻地走出房间.应该用see sb doing
一、1. see sb do sth 看见某人做过某事, I often see him draw a picture. 2. see sb doing sth 看见某人正在做某事。 When I pass the window I see him drawing a picture. 3. be seen to do ,用于被动语态还原to He is ...