Question

表示时间的介词at，on，in，及for的用法?

Answer 1

at
[æt,
ət]
prep.
(表示位置)
,
于;
达,
达
;
经,
由;
…旁,
靠近;
…
;
…
;
…
位
He
was
not
at
his
office.
办公室
(表示
间)
,
…
刻[
辰,
期间,
阶段,
节];
…岁
The
meeting
will
open
at
15
∶
00.
议
午三点钟
始
(表示状态)处于…状态,
…情况
The
soldiers
are
standing
at
attention.
士兵
立
站着
(表示
式)
…
式;
通
…
作
I
was
there
at
a
bound.
我纵身
跃
(表示原
)
,
由于;
由于
,
由于应…
We
were
frightened
at
the
terrible
sight.
看
怕
景象,
我
吓呆
(表示距离)
,
距离…处
I
saw
it
at
a
distance.
我
远处看见
(表示目标)朝,
向,
着
He
threw
the
key
at
me.
钥匙丢给我
(表示环境)
席,
参加
I
remember
him
at
a
banquet
on
that
night.
我记
晚
参加
宴
(表示
向)
…
面
She
is
good
at
describing
things
or
expressing
ideas.
善于描述事物或表达思想
on
[ɔn]
prep.
(表示位置)
…
,
…旁,
…身边
That
book
on
the
desk
is
an
atlas.
桌
本书
图册
(表示
间)
…
It
occurred
on
the
morning
of
the
fifteenth.
事情发
15号
午
(表示
向)向,
往,
朝;
沿着,
顺着
They
marched
on
the
enemy's
fortress.
向敌
要塞进军
(表示状态)系于,
悬于;
附于
A
picture
hangs
on
the
wall.
墙
挂着
幅画
(表示
式)乘,
坐,
骑
She
will
leave
on
an
early
train.
乘早班火车离
(表示
象)
,
于,
碰
,
…造
困难
There
is
much
to
be
said
on
both
sides.
公说公
理,
婆说婆
理
(表示原
)由于,
The
old
worker
retired
on
account
of
age.
工
退休
(表示比较)与…相比
Today's
weather
is
an
improvement
on
yesterday's.
今
气比昨
(表示
位)
…
位
The
town
stands
on
the
left
bank
of
the
river.
该镇坐落
河
左岸
adv.
(放,
穿,
连接)
He
has
new
shoes
on.
穿
新鞋
向前,
(继续)
She
worked
on
quietly
all
night.
整
晚
默默
继续工作
in
[in]
prep.
(表示位置)
…
面;
,
于;
…部位
I
could
feel
the
tension
in
the
room.
我
觉
房间
紧张气氛
(表示
间)
…
期,
…
,
程
In
her
twenties
and
thirties
she
had
had
no
difficulty
getting
jobs.
二三十岁
找工作
点
困难
(表示
向)往…内,
朝…
向
I
saw
him
go
in
the
shop.
我看
走进
商店
(表示状态)处于…
,
…情况
Martin
was
in
his
pyjamas.
马丁穿着睡衣
(表示
式)用,
,
按,
乘,
…形式
They
were
speaking
in
Italian.
讲意
利语
(表示原
)由于,
He
went
in
fear
of
his
life.
自
性命担忧,
所
走
(表示领域,
范围)
…
内
It
is
not
in
my
power
to
do
that.
做
事非我力所能及
(表示结
)
做,
作
What
did
you
give
him
in
return?
给
作
报答呢?
(表示目
)
They
set
off
in
search
of
the
lost
child.
发
寻找走失
孩
adv.
进入,
入内
The
door
being
opened,
they
came
in
at
once.
门
打
,
马
进
家,
面
My
wife
won't
be
in
until
five
o'clock.
我妻
要
五点钟才
家
达,
临
Is
the
ship
in
yet?
船
港
?
政,
选
This
year
the
Conservative
Party
is
in.
今
保守党执政
令,
流行
Honey
peaches
are
in
now
and
we
can
eat
them
every
day.
现
水蜜桃
市,
我
每
都
吃
for
[fɔ:,
fə]
prep.
(表示
间)
(某
特定
间);
…
节;
持续达
(表示
向)向,
朝,
往
They
made
a
rush
for
the
exit.
猛
冲向
口处
(表示
象)
替,
帮,
给,
…做准备,
,
于,
…
说,
…
What
can
I
do
for
you?
我能帮
忙
?
(表示原
)
,
由于,
作
…
结
I'm
pretty
angry
with
you
for
not
telling
me.
由于
没
告诉我,
我
气
(表示距离)延续达,
计
I
followed
him
for
some
distance.
我跟着
走
段路程
(表示结
)
做,
作
,
作
…
部
,
…
条件
言
We
can't
accept
that
as
a
basis
for
a
decision.
我
能同意
基础
做
决定
(表示目
)
…,
适用于
The
ship
sent
out
a
message
for
help.
船
发
求救信号
(表示态度)支持,
赞同,
想要
Are
you
for
the
plan
or
against
it?
支持
计划
反
呢?
(表示比率)按…比例,
…价格,
第…
I
bought
this
book
for
￡3.
我买
本书花
三英镑
conj.
,
由于
Prepare
to
alight,
for
we
are
almost
there.
我
马
要
,
准备
车吧

Answer 2

in
+段时间，如：in
the
morning,
in
1990....
at+时刻（钟点），如：at
eight
o'clock....不过，有些固定短语也用at,如：at
night..
on+某一天，如：on
sunday,
on
monday
morning,
on
a
winter
morning....