Well, uncountable nouns in English are always treated as singular, aren't they?
Water is a liquid.
Information is power.
Are there examples of uncountable nouns (more accurately, nouns used in an
uncountable context for which we would use 'are'?
(hmm i just thought of the weird example 'trousers'/'pants' but it doesn't really fit I think..)
Of course it goes without saying that 'uncountable' is not language-independent. I remember being most amused when I found out that raisins are uncountable in Russian
I have a vague idea that, in Russian, the plural is sometimes used with uncountable nouns...?