hour ago’, ‘a week ago’, ‘two weeks’ ago – or even ‘five years ago’ or ‘a century ago’. a century means one hundred years. so you can use ago to indicate the timing of something which happened in the past – and how much time has passed since. so you can also say things like ‘it was a long time ago’.
if you’re talking about the future, you may also hear someone say ‘in a week’s time’ or ‘in a week’. so this means a week into the future. you can also say ‘in five minute’s time’ or ‘in five minutes’. so my son might say ‘can i have an ice 