when这个英语单词是什么意思?

when
[hwen]
adv.
什么时候
在那时,
其时
conj.
在…时,
当时
如果,
要是
When
the
weather
is
good,
I
usually
go
to
the
country.
若是天气好的话,
我总是到乡下去。
既然,
考虑到
pron.
什么时候
那时
美国传统词典[英英]
when
when
AHD:[hwãn,
wãn]
adv.
At
what
time:
When
will
we
leave?
conj.
At
the
time
that:
in
the
spring,
when
the
snow
melts.
As
soon
as:
I'll
call
you
when
I
get
there.
Whenever:
When
the
wind
blows,
all
the
doors
rattle.
During
the
time
at
which;
while:
when
I
was
young,
I
was
sick
all
the
time.
Whereas;
although:
She
stopped
short
when
she
ought
to
have
continued.
Considering
that;
if:
How
can
he
get
good
grades
when
he
won't
study?
pron.
What
or
which
time:
Since
when
has
this
been
going
on?
n.
The
time
or
date:
Have
they
decided
the
where
and
when?