It's such a nice day today!
I'm interested in the usage of the indefinite article. I know this sentence is correct. We use an indefinite article in exclamations with countable nouns.
But the question is: If it's NOT an exclamation, what do we use? Let's say:
Which variant is correct?
I went for a walk because it was such a wonderful day.
is correct.
The first is correct:
…it was such a wonderful day.
The others are not correct. Generally, when used with a singular countable noun, such should come before the indefinite article, like your example:
It was such a wonderful day.
When used with a plural noun, or an uncountable noun, then there’s no article, but it should still precede any adjectives (and there should usually be some adjective(s); without an adjective, this use is generally somewhat poetic/archaic):
He sings such beautiful songs! She listens to such horrible music. There was such merriment at the party last night…
It should never follow a, or be used with the; all the following are wrong:
*…a such wonderful day… *…the such wonderful day… *…such the wonderful day…
When using such with a singular noun, put such before 'a'. This is a general rule.
Examples:
She's such a lovely person (NOT a such lovely person).
I doubt if such a promise has any value.
