1. How beautiful is night!
Generally,The exclamatory sentence has 'How +adjective/adverb + subject+verb!' or 'What +noun with or without qualifier +subject +verb', but in the above sentence it not the same.
Is the above sentence correct?
2. How you have grown! (change in a assertive sentence)
Here in #2 , a sentence has been given in place an adverb or an adjective. I am not able to rewrite it.
Could you please help me?