Usage of English exclamatory sentences what and how

Usage of exclamatory sentences what and how in English: When exclamatory sentences are introduced, how is used to modify adjectives, adverbs or verbs, but not nouns, while what is used to modify nouns.

Asking about the temporary phenomenon of someone or something usually uses how；; Asking about the lasting characteristics of someone or something usually uses what.

The exclamatory usage of what: 1, what+a/an+ adjective+countable noun singular+subject+predicate. 2. What+adjective+uncountable noun+subject+predicate. 3. What+adjective+countable noun plural+subject+predicate.

The exclamatory usage of how: 1, How+ adjective+subject+predicate. 2. How about+adverb+subject+predicate. 3.How+ subject+predicate.

The usage of the exclamation what:

1.What+a/an+ adjective+countable noun singular+subject+predicate, for example:

What a nice day! What fine weather!

What an interesting book that is! What an interesting book that is!

2.What+ adjective+countable noun plural form+subject+predicate, for example:

What beautiful flowers! What beautiful flowers!

What good teachers they are! What good teachers they are!

3.What+ adjective+uncountable noun+subject+predicate, for example:

What fine weather! What fine weather!

What delicious food this is! What delicious food this is!