We use the superlative form when we talk about the biggest, or
the most important thing or person among a group of things or
people, like this: - The Empire State Building is the tallest
building in New York City. - Jack is the best baseball player in
our school. - Tokyo is the biggest city in Japan. When you want
to mention that the thing or person is a member of a group
containing the biggest, or the most important things or people,
you can use one of. We use one of + adjective + plural noun, and
we use this combination with a singular verb, like this: - The
Empire State Building is one of the tallest buildings in the
world. - Jack is one of the best baseball players in our city. -
One of the biggest cities in Asia is Tokyo. Do you live in one
of the biggest cities in your country, or one of the smallest?
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