ظَلَّ and بَاتَ both express continuation, but their time setting differs.
During the day: ظَلَّ الْوَلَدُ لَاعِبًا
The boy kept playing during the day. لَاعِبًا is the mansub khabar.
During the night: بَاتَ الْمَرِيضُ نَائِمًا
The patient remained asleep during the night. نَائِمًا is the mansub khabar.
Two clear cases are easier to compare directly than in a table.