常用介词用法：
1. in(在……里) We'll be back in three days.
( He came back three days ago.)
Do you work in the daytime or at night?
We'll be back in no time. (in no time 立刻，马上)
He is always in a good mood. (in a good mood 情绪很好 in a bad mood 情绪很糟)
I have no difficulty/ trouble in solving the problem. (no difficulty in doing sth. 没有困难)
Did you have any difficulty in finding the hotel?
They have done it in a wrong way. (in a wrong way 错误的方式)
They accepted the plan in principle. (in principle 原则上)
2. into(进入) Let's go into the room. I worked far into the night.
The house has been turned into a museum.( turn into 变成 )
We must put these theories into practice.
They all burst into laughter. (burst into 爆发)
At the news， my sister burst into tears. (burst into tears 放声大哭)
I ran into my former classmate at the station. We haven't seen each other for a long time.
(run into 偶然碰到，偶然遇到)
3. like(像……) He likes its mother. 他喜欢他的母亲。
The baby looks like its mother. It looks like snow.
What's the weather like today? I don't feel like eating anything. What does it look(taste) like?
4. of(……的) Have you got the Complete Works of Lu Hsun?
We're of the same opinion. (be of 赞同)
Electricity is of great use in industry and everyday life. (be of use=be useful)
Your help is of great value to us. (be of value=be valuable)
I often think of the days we spent together. (think of 想起)
I read it quite by chance in a magazine. (by chance 偶然)
It's very kind of you to remind me of it. ( remind sb. of sth. 提醒某人某事)
The picture reminds me of the time we spent together in Dalian.
We're proud of our son. (be proud of 以……为骄傲)
The little boy is afraid of dogs. (be afraid of 害怕) It's just waste of time.
He is ashamed of his past.(be ashamed of 羞耻，惭愧) The village is short of water.(be short of 缺少)
I do all these of my own will. (of one's own 出于某人的意愿)
5. on(在……上) You hit the nail on the head. 你这话击中了要害。
Put the book on the shelf， please.
My mother was born on April 14， 1947.
(哪一年用in，具体到某一天用on)
He left Beijing for home on the morning of July 2.
(in the morning ， 具体到某一天的上午、下午、晚上用on )
On the eve of their departure， they gave a farewell banquet. (on the eve of 在……前夕)
We usually get up late on Sunday morning. On his return he told us about the meeting.
They will go on a visit to Asia. (go on a visit=visit )
He is here on business. (be on business 做生意)
The workers at the airport is on strike. (be on strike 罢工)
When we came back， we found our house on fire. (on fire 着火)
The professor is making a speech on the current situation.(关于)
This house is on sale. (on sale 出售) Who's on duty today?
The girl insists on leaving home and depends on herself for a living.
(insist on 坚持 depend on 依靠，依赖)
6. out of(出于)
Looking out of the window， I saw a girl turn round the corner.
My brother has been out of the hospital for a week.
(be out of the hospital 出院 be in hospital 住院)
He did it out of gratitude for us. We helped the poor boy out of sympathy.
Please get out of the way. 别挡道。
All of us were out of breath when we got to the top of the mountain. (be out of breath 气喘吁吁)
7. since(自从)They have been close friends since childhood.(从儿童时期他们就是好朋友)
We've always been on guard since then.(be on guard 警惕)
8. through (通过、穿过) There is a path through the garden.
I've gone through the book.(go through 看过 浏览过)
She must have been through a lot.( be through 受罪 )
We quickly saw through his trick. ( see through 看穿 )
How soon will you be through? (be through 打电话)
You're through now. 你的电话接通了。
He began to look through the album. (look through 翻阅)
The couple went through many hardships. (go through 经历)
9. to We'll change the date to July 10. (to 到什么时间)
Let's drink to your health. ( drink to 为什么干杯 )
Don't leave things to the last moment.(to the last moment 到最后一刻)
You're awfully nice to me. Hainan lies to the south of Guangdong. ( lie on， lie in )
To our surprise， she gave up the opportunity.(to one's suuprise 使某人感到惊奇 give up 放弃)
The final score is 3：5 in our favor.
10. under(在……的下面) The road is under repair.(be under repair 正在修理)