Form and rules
How it works
Use so + adjective/adverb: so useful, so quickly.
Use such + a/an + adjective + singular countable noun: such a useful tool.
Use such + adjective + plural/uncountable noun: such useful tools, such useful information.
So...that and such...that introduce a result.
So much/many/few/little combine with nouns; such does not replace these quantifier patterns.