My colleague and I were talking and he said "it should have came down", which to me, does not sound correct. Which sentence is correct?
I also have a question about 'took' and 'taken'. With the same individual, he said "he could have took the cookie" to which I corrected him and said that, yes, you can say that and the meaning will come across and will be understandable, but "he could have taken the cookie" is correct English. In retrospect, after much debate, I am now doubting myself.
By my knowledge of the English language, 'took' and 'taken' are not interchangeable if you are utilising the English language correctly.