'A year' can be any year without any specification. But 'the year' means a particular/specified year or the one which is already mentioned and thereby known. E.g: In a year there are twelve months.

Context Explanation

(means any year or all years) I was born in the year 2000. (in that particular year) Grammatically 'a/an' is known as indefinite article and 'the' is definite article. The indefinite article (a/an ... The second and final year gives the impression that you mean one specific year, which was at the same time your second, as well as your final year.

Insight Material

For example: In the fifth and last year of the war, the motivation was dwindling. Of course, in your sentence, this interpretation is impossible because you use between, but I did get confused at first. 1 I would use a suspended en-dash: I was an advisor to the 14– and 15–year-olds. The choice of open (year old), closed (yearold) or hyphenated (year-old) compounds is often a difficult one. The first guide is to see what others do and whether the compound exists in a dictionary.

Final Conclusion

Unless you're talking about Chinese (or Persian) New Year, the name of the celebration isn't New Year but New Year's Eve, and it happens on the last day of the old year. The New Year or New Year - English Language & Usage Stack Exchange From WordWeb: Annual: Occurring or payable every year What is the corresponding single word for occurring every two year, three year, four year etc. I understand that it's surely not exhaustively If annual means one year, is there any word for two,three, four.. year Ten year old may be used as an adjective, but only attributively ("a ten year old boy"). And your last sentence is back to front: ten years old is an adjectival phrase like brainy, while ten year olds is a noun phrase like a boy.