介词有哪些？
1、at表示：（在（某时刻、时间、阶段），在……岁时）。
Mycousinjoinedthearmyatfifteen。
我表哥十五岁参的军。
2、on表示：在（某日），在周末，在……节日。
Hewasbornonthe15thofAugustin1769。
他出生于1769年8月15日。
3、in表示：在……事后，在……期间，在……年/月。
ShewenttoAmericain2000。
她2000年去了美国。
4、before表示：在……之前。
Springcomesbeforesummer。
夏天之前是春天。
5、after表示：表示……之后.
Cometomyofficeafterschool。
放学后请来我办公室。
介词有哪些
1、简单前置词包括in，on，with，by，for，at，about，under，of，to等。(to为介词，意为“习惯(做)……”，后接名词，代词或动名词形式)
2、合成前置词包括into，within，throughout，inside，outside，without等由两个单词组成的介词。
3、重叠前置词包括fromamong从...当中frombehind从...后面，untilafter直至...之后，atabout在大约...，afterabout在大约...之后等；
4、短语前置词一个或两个简单介词和一个或几个其他词类构成一个短语，作用相当于一个介词，这就叫做短语介词。这类介词的末尾总是一个简单介词。如accordingto，becauseof，bymeansof，inadditionto，infrontof，inspiteof，into等。
5、分词前置词有极少数介词的词尾是“-ing”，形似现在分词（其中也有些可做分词）。常用的有：considering，regarding，respecting，including。
介词有哪些？
不知道你是否想问英语的介词
这里给你介绍英语的吧。
英语介词简介
表示时间的介词
表示场所和方向的介词
其他介词
表示时间的介词
表示"时间"的介词如下:
表示年,月,日时刻等用at,in,on
表示时间的前后用before,after
表示期限等用by,untill,till
表示期间等用for,during,through
表示时间的起点等用from,since
表示时间的经过等用in,within
表示年,月,日时刻等用at,in,on
at 用于表示时刻,时间的某一点
at noon
at night
at present
at 8 o'clock
We usually have lunch at 12.
on 用于某天,某天的上,下午(指具体某一天时,一律用on) 返回
on Monday
on Tuesday morning
on June 12th
on a cold night
on the night of May 1st
We didn't listen to the lecture on Friday afternoon.
in 用于表示周,月,季节,年,泛指的上午,下午,晚上
in the week
in May
in spring
in 1992
in the morning
in the afternoon 返回
in the night
People go skating in winter.
表示时间的前后用before,after
before 在...之前
Wash your hands before dinner.
He will call me before he leaves here.
after 在...之后
Let's sing some songs after school.
Please close the door after you leave the room.
表示期限等用by,untill,till
by 在...之前;截至...
How many English books had you read by the end of last year.
untill(till) 直到...为止 (untill 与 till 可通用)
We didn't begin to watch TV untill (till) nine o'clock.
I'll wait for him untill he comes here.
表示期间等用for,during,through
for 达...之久 返回
He has lived here for 20 years.
We will stay in the city for two days.
during 在...期间
They are going to have a good rest during the summer holidays.
through 一直...(从开始到结束)
They played the cards through the night.
表示时间的起点等用from,since
from 从...起(时间)
The meeting will be held from eight to ten.
The meeting will be held at eight
since 自从...以来(表示从以前某时一直到现在仍在继续)
I have been sick since yesterday.
The doctor has saved a lot of lives since he became a doctor.
表示时间的经过等用in,within 返回
in 在...后(未来时间)
in an hour
in a week or so
He will be back in five hours.
They said they would arrive here in a week.
within 不超过...的范围
within 3 hours
I must finish painting the cat within five minutes.
They worked hard. They finished the work within 2 days at last.
表示场所,方向的介词
表示场所的介词: at,in,on,under,by,near,between.
表示方向的介词: into,out of,along,acros,through,to,from.
at,in
at 在某地点(表示比较狭窄的场所) 返回
at school
at home
at No.2 Baker Street
at a factory
I'll meet him at the Beijing railway station.
in 在某地(表示比较宽敞的场所)
in Beijing
in China
in the world
in the street
She was born in China.
on,under,over,above,below
on a.在...上面,有接触面
on the desk
There are two maps on the wall.
b.在...靠近...的地方
on the right
on the river
above 在...上方
Our plane flew above the clouds.
over 在...正上方,是under的反义词 返回
There is light over Li Ming.
A few birds were flying over the sea.
under 在...下面;在...之内
under the table
under the jacket
The dog is under the table.
below 在...下方(不一定是正下方)
There are a lot of fishes below the surface of the water.
near,by
near 近的,不远的
near = not far
Is there a bus stop near here
by 在...旁边,距离比near要近
by the window
by me
The boy is standing by the window.
between,among,around 返回
between 在两者之间
My teacher is sitting between Tom and Mike.
What's the difference between A and B
among 在三者或更多的之中
There is a beautiful house among the trees.
He is very popular among the students.
around 环绕,在...周围,在...四周
We sat around the table.
They walked around the street.
in front of,behind
in front of 在...的前面;在...的前部
The is a tree in front of the house.
There is a big desk for the teacher in front of the classroom.
behind 在...后面 是 in front of的反义词 返回
There is a tree behind the house.
in,into,out of
in 在...之内,用于表示静止的位置
The students are in the classroom.
into 进入
The students run into the classroom.
He jumped into the water.
out of 和into一样,也表示有一定的运动方向
The students rushed out of the room.
along,across,through
along 沿着
I was walking along the river when it began to rain.
across 横过 返回
I often swim across the river
through 贯穿,通过
The river was through the city.
to,for,from
to 到达...地点(目的地)或方向
He came to Japan in 1980.
Tom has gone to school.
for 表示目的地,"向..."
I'll leave for America next week.
leave for 动身去...
start for 出发去...
from 从...地点起...
It's about ten minutes' walk from here to the cinema.
How far is it from our school to the hospital
其他介词
表示手段和材料的介词用with,in,by
with a. 和...在一起
Will you please go with me
b. 具有,带有
He was a handsome boy with large bright eyes.
c. 用某工具或方法 返回
Li Li cut her hand with a knife.
I see with my eyes.
He wrote the letter with a new pen.
in 表示用什么材料(例如用墨水,铅笔)等,或用什么语言,或者表示衣着,声调特点时,不用with,而用in
She wrote a letter in black ink.
Don't write it in pencil but in ink.
by 通过...方法,手段
He goes to school by bicycle.
of, from
of (属于)...的;表示...的数量或者种类
This is a map of China.
Will you please give me a cup of tea
from 来自(某地,某人);以...起始(时间或地点) 返回
I'm from Nanjing.
I have got a letter from my friend.
without,like,as
without 没有,是with的反义词
Men can't live without air and water.
I can't read the book without using a dictionary.
Please give me a cup of coffee without milk.
Please give me a cup of coffer with milk.
like 象...一样
Nancy is just like her mother.
as 作为
He is famous as a scientist here.
against,about 返回
against 反对;靠着
He is against the plan.
The teacher is standing against the blackboard.
about a. 关于;各处;身旁
Tell me something about your life.
He looked about himself.
I have no money about(= with) me.
b. 询问某人某物的情况或提出建议
What about your sister
How about going to the park
常见的介词 、有哪些 ？
at,in,for,near,after,before,behind,on,by,with,inside,outside,onto,at the back of,instead of,in place of,in front of,at the top of,at the bottom of,on the edge of,on the point of,thanks to,owing to,due tointo,nearby,within,without,from behind,until after,from amongincluding，considering，regarding，concerning，round，above，except，besides，opposite，across，close to1，表时间的介词：at,before,after,since,still,until,upon,on,from,between,by,in,during,for,through,
within,over
2,表地点的：at,form,between,near,besid,by,close to,next to,behind,in front of,
ahead of,before,arong,beyond,past
3,表工具或媒介：by the means of,with,through
4,表内容：over,of,as for,with ,due to
6,表原因：for,because of,as a result of,owing to, on acconut of,due to希望我的回答能对你有用1，表时间的介词：at,before,after,since,still,until,upon,on,from,between,by,in,during,for,through,
within,over
2,表地点的：at,form,between,near,besid,by,close to,next to,behind,in front of,
ahead of,before,arong,beyond,past
3,表工具或媒介：by the means of,with,through
4,表内容：over,of,as for,with ,due to
6,表原因：for,because of,as a result of,owing to, on acconut of,due to希望我的回答能对你有用on in behind before