I've found following sentence from one of books.
He clearly has a good understanding of the issues.
Nevertheless, what confuses me was the article "a" before "good understanding", despite the fact that "understanding" is a uncountable noun.
You can sometimes use the indefinite article ( a/an ) with an uncountable noun when an adjective intervenes. I can't promise that it works 100% of the time, but it definitely works in your example here. CJ
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You can sometimes use the indefinite article (a/an) with an uncountable noun when an adjective intervenes. I can't promise that it works 100% of the time, but it definitely works in your example here.
CJ