at the beginning 和in the beginning 有什么区别

"at
the
beginning"
implies
a
reference
to
a
more
specific
point
in
time,
where
as
"in
the
beginning"
implies
something
occuring
over
a
slightly
longer
period
of
time.
they
are
often
interchangeable,
though.
at。。是指的时间比较确切的时间点，in。。指的时间稍长，但是一般能互换。
at
the
beginning
(of)
is
used
for
the
time
and
place
when
something
begins.
in
the
beginning
(=
at
first)
suggests
a
contrast
with
a
later
situation
at。。指的是事情开始的时间和地点，in
。。（=
at
first
一开始）一般会有一个稍后的对比。

eg:Great
changes
took
place
at
the
beginning
of
the
century.
在那个世纪初发生了巨大的变化。
2.
the
beginning表示“起初”，“开始的时候”，不与of介词短语连用。
但at
the
beginning偶尔也可单独使用，在意思上与in
the
beginning区别不大。
起初没人理睬他的话。