Hi Mariya, In English we usually use the words 'around' 'about' 'mid' 'early' 'late' and '...something' when we talk about age colloquially. This is not for formal writing. 1. Around - this implies that we are guessing or approximating a person's age. Ex. "She´s around 20 years old 2. About - is the same as 'around' but we don't use this as often. 3. Mid - this implies that we think the person's age is the middle of that range. We usually use this with the preposition 'in' and a possessive pronoun 'his' or 'her'. Ex. "He's in his mid thirties" means we think he's between 34 - 36 years old. You can also sometimes hear English speakers say "He's mid thirties" but the other form with the preposition is more common (same with Early and Late). 4. Early - this implies that we think the person's age is in the early portion of that range. Again, we usually use this with the preposition 'in' and a possessive pronoun. Ex. "She's in her early thirties" OR "She's early thirties" (less common). This means 30-34. 5. Late - this implies that we think the person's age is in the later portion of that range. Again with 'in' and a possessive pronoun. Ex. "He's in his late thirties" OR "He's late thirties" (less common). This means 36-39. 6. When we are not sure of the range sometimes we can say thirtysomething, fourtysomething, fiftysomething, etc. OR use the preposition 'in' and a possessive pronoun with thirties, fourties, fifties, etc. This implies the full range of that age group. Ex 1. "She's thirtysomething" which implies 30-39. OR Ex. 2 "She's in her thirties". Hope this helped.