preposition
noun
ˌprepəˈzɪʃən
noun
1
a
word
that
is
used
before
a
noun,
PRONOUN
,
or
GERUND
to
show
place,
time,
direction
etc.
In
the
phrase
‘the
trees
in
the
park’,
‘in’
is
a
preposition.
介词，前置词