In order to talk about age, we need to use the counter 歳.
Please note that 歳 is only used for talking about the age of living things like animals and humans.
You would not, for example, say: あの車は何歳ですか？.
As with the previous counter words you have learned,
歳 has several irregularities in how it is read in combination with certain numbers,
as shown in the table below.
one year old
two years old
three years old
four years old
five years old
six years old
seven years old
eight years old
nine years old
ten years old
twenty years old
Below are several example sentences relating to age.