I came across a sentence in a text-book The Royal readers:"Every spider is born a weaver". I am not sure whether it is correct. I think it might be " Every spider is a born weaver". Please help me out of the puzzlement.Thanks.
I agree in essence with Exgerman's distinction between the two phrases.
To be born a weaver is not suggesting that the little fellow was weaving two seconds after birth. It suggests that he was born probably into a family of weavers and started weaving as soon as could be reasonably expected.
To be a born weaver doesn't necessarily mean that one is a weaver, just that something has suggested that one would be very good at it if one did it. The phrase means that one has a great natural aptitude for weaving.
You could say 'He was born a leader' using the past tense. You might then tell how he organised all the games at kindergarten.
'He's a born leader' refers to present leadership skills. I suppose that it does mean he was born with such abilities but the emphasis is on present achievements. Writing about the expressions makes me wonder what they really mean! It's not like spiders innate ability to weave webs.