1.How old are you?
How old is your brother/sister?
2.I am 25 years old.
I am 25.
這些則是回答年齡的方式。另外，”I am 25 years of age.”則是非常正式的方式。
而”I am 25 years.”則是錯誤的表達方式。
3.My friend has two sons aged 8 and 10.
My friend has a daughter aged 5.
4.My neighbor has a four month old baby.
而非”four months old baby”。
My uncle has a twenty year old daughter.
而非”twenty years old daughter”。
My house is 40 years old.
而非”my house is 40”。
My twenty year old car still runs smoothly.
而非”twenty years old car”。
He is in his early/mid/late twenties.
She is in her teens.
Most students in my class are above/below the age of twenty.
Maria is nearly/almost 40.
John is about 50.
He must be under 18.
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