I have learnt many phrases with the same formation rule such as 4 - age child, 70 - storey building, 2 window house ... But I have recently found this sentence (written as a standard English sentence such as in an English test) "She gave me four euros change". I'm not sure if it should be "four euro" intead maybe for I'm not sure about the role of the word "change" in this case!
Could you please give me a clear confirmation?
Thank you so much!
In the UK, we would say, for example, ' a four euro debt', but 'change' is different. (As I said though, habits in Ireland are different. I don't think either could be said to be 'wrong'.)
PS *What's this? Your general understanding is right, but the expression is 'four-year-old child'