It is a single (or uncountable) quantity of metal.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
TakaWhat I'm asking is, when you have a noun X in the plural as a subject and an uncountable noun Y as a complement, is it always 'X is Y' as the sentence in question? Or is it usually 'X are Y' but in some cases 'X is Y'? If the answer is the latter, what cases are they where it has to be 'X is Y'?Well I cannot think of
AlpheccaStarsa Y (mass noun) as the complement,I'm thinking about it more broadly, AS; not only mass nouns; non-count nouns in general.