Englishfor English speakers
was
Verb
—
A form of the verb be used to talk about yourself, or another person in the past.
I was singing in the shower.
Who was that girl you were talking to?
an
Determinative
—
An (or a) is used when the following word could be any of a certain type.
I just ate an apple.
It is indeed an honor to have met you today.
den
Noun
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A den is a place where a wild animal lives.
The wolf went back to his den to sleep after a day of hunting.
—
A den is a small cave in the side of a hill.