My sister became twelve years old yesterday.
Yesterday was my sister's twelfth birthday.
How do you explain why you use a cardinal number for the first sentence and ordinal for the second and why these are not interchangeable. Thank you!
Cardinal numbers tell how many . Except for 'one', cardinal numbers are followed by a plural. three years, twelve years, five chairs, seven computers Ordinal numbers tell which one (in an ordered group).
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Cardinal numbers tell how many. Except for 'one', cardinal numbers are followed by a plural.
three years, twelve years, five chairs, seven computers
Ordinal numbers tell which one (in an ordered group). They are almost always followed by a singular.
second person in line, fifth cake he's made this month, the Jones's seventh child
CJ
anonymousHow do you explain why you use a cardinal number for the first sentence and ordinal for the second
I don't understand your problem, really, but the first is cardinal + unit, while the second in is ordinal (adjectival) + noun.
anonymous why these are not interchangeable.
How would you presume to do that?