at与at the的用法区别

用法区别是：
at
the后面要加特指的名词。
at和后面的名词经常构成固定搭配，比如at
home等。
例句辨析：
at
the
1、I
went
home
at
the
weekend.
我周末回家了。
2、According
to
this
study,
women
have
made
notable
gains
at
the
expense
of
men.
根据这项研究，女性以牺牲男性的利益为代价而获得了显著的收益。
3、I
knocked
at
the
front
door,
but
there
was
no
answer.
我敲了敲前门，没有人应。
at
1、He
was
shy
and
nervous
as
a
boy,
and
unhappy
at
school.
他小时候既害羞又胆怯，在学校过得并不快乐。
2、She
left
the
light
on
in
the
bathroom
at
his
request.
她按照他的要求将浴室里的灯开着。
3、I
am
afraid
we
are
not
at
liberty
to
disclose
that
information.
恐怕我们无权透露这一信息。