After working all day,I am dead to the world when I sleep. 工作了一整天，我睡得不省人事 Sleep well 睡个好觉，睡得好 Have a good sleep/night. 好好睡一觉 Sleep tight.美美睡上一觉，睡个好觉 Sweet dreams.好梦。 A sound sleep is what you need now ...