两者的时态标志都不明显,如:
The
sky
hazed
over
at
the
end
of
the
day.
过去
The
account
is
settled
at~the
year.
现在
She’ll
present
flowers
to
the
actress
at~the
play.
将来
字限,后者例略
by
the
end
of
与过去完成时连用
at
the
end
of
一般和过去时一起
这两个词组,第一个是过去完成时的标志词
后一个不太和时态放在一起说,
at
the
end
of
要加名词