should的一般疑问句和肯定否定回答是否是特殊情况?

问题描述:

should的一般疑问句和肯定否定回答是否是特殊情况?
He should stay at home and have a good sleep.
(改一般疑问句并作肯定否定回答).

Should he stay at home and have a good sleep?
No,he needn't.