1.deal with sth./sb.表示“对待，交往，处理, 论述，涉及；与…相处；与…做买卖;和…有生意往来”。
You dealt with the situation very effectively.
你应付那种局面很有一套。
Such people are difficult to deal with. 这种人很不好对付。
This sort of man is hard to deal with. 同这种人打交道很难。
That question has been dealt with. 那个问题已得到处理。
All enquiries will be dealt with as speedily as possible.
所有询问都将从速处理。
We must take positive steps to deal with the problem.
我们必须采取积极步骤处理这个问题。
The government must deal with this as a matter of urgency.
政府必须将此事当作紧急的事情来处理。
The government is taking emergency action to deal with a housing crisis
政府正采取紧急措施解决住房危机。
She had shown herself unable to deal with money.
她所做的事已表明她不善理财。
Society does not know how to deal with hardened criminals.
社会不知道怎样处置惯犯。
She explains how she deals with on-air technical problems.
她解释了她是如何处理播放中的技术问题的。
All cases concerning children are dealt with in a special children's court.
所有涉及儿童的案件均由儿童特别法庭审理。
Those embezzlers and grafters who are reckless with greed must be dealt with seriously in accordance with the policy.
对那些利欲熏心的贪污盗窃分子，一定要按照政策严肃处理。
A number of people have been employed to deal with the backlog of work.
已雇来一些人处理积压的工作。
She shouldn't be having to deal with problems like this at such a tender age.
她小小年纪涉世未深，实在还不该处理这样的问题。
Once he had found his feet he was able to deal with any problem.
他一旦变得自信了就能够处理任何问题。
The President said the agreement would allow other vital problems to be dealt with.
总统说这项协议将能使其他关键问题得到解决。
I will not deal with that shopkeeper again. 我将不会再与那个店主打交道。
I deal with customers on the phone and rarely meet them face-to-face.
我用电话和客户打交道，很少和他们见面。
He's a hard man to deal with.
要跟他这个人做生意很难。
When I worked in Florida I dealt with British people all the time...
在佛罗里达工作时，我总与英国人有生意往来。
Let me deal with some common misconceptions.
我来谈谈一些常见的错误认识。
People usually complain about having to deal with too much bureaucracy.
人们经常抱怨不得不应付太多的繁文缛节。
The declaration deals with disarmament and the non-proliferation of nuclear weapons.
该声明涉及裁军和防止核武器扩散问题。
This book deals with the social, economic and political issues of the period.
这本书论及了那个时期的社会、经济和政治问题。
The book deals with some of the oddities of grammar and spelling.
这本书专讲语法和拼写方面的某些不规则现象。
The paper deals with the events in historical sequence.
本文按历史顺序论述那些事件。
2.do with可以表示多种含义。
（1）表示“对待，处理”，意同deal with，但搭配不同。比较：
do with经常与连接代词 what连用，而 deal with经常与连接副词 how连用
What will you do with the letter？你将把那封信怎样处理？（do with同what搭配）
How will you deal with the letter？（deal with同how搭配）
I don' t know how they deal with problem.(= I don' t know what they do with the problem.)我不知道他们怎么处理这个问题.
He is easy to deal with.(= He is easy to do with.此时" do"是不及物动词)他很容易相处.这两个词在使用上有细微的差别.一般来说， do with表示"被处理"、"忍受"、"相处"、"相关"等等.
I don't know what to do with all the food that's left over.
我不知道怎样处理所有这些剩饭剩菜。
You can’t deal with your personal matters at work.
你不能在上班的时候处理个人事物。
（2）表示“容忍，满足于，对付某人，与……做生意”。
I can't do with loud music. 我受不了喧闹的音乐。
I could do with a good night's rest. 我只要能好好休息一个晚上就行了。
I could do with a drink!
我真想喝一杯！
We could all do with a cup of tea
要是能给我们都来杯茶就好了。
I could do with a cup of tea
我需要一杯茶。
Don’t worry about it, let me deal with him.
别担心，让我来对付他。
The company deals with many overseas suppliers.
这家公司跟很多国外的供应商做生意。
（3）表示“和……有关”，用于have something/anything to do with，have nothing to do with结构中。
It has nothing to do with me. 这和我无关。
Her job has something to do with computers.
她的工作与计算机有些关系。
They were shouting at each other. It was something to do with money.
他们在吵架，是为了钱的事。
I'd have nothing to do with him, if I were you.
如果我是你，我就不会跟他有任何瓜葛。
I swear to God I had nothing to do with it.
我可以对天发誓，这跟我一点关系也没有。
A lot of this has to do with power and greed.
凡此种种都和权力与贪欲有关。
Her job has to do with telephone. 她的工作与电话有关。
That has nothing to do with what we're discussing.
那与我们所讨论的问题毫不相干。
The top secret documents had to do with the most advanced military equipment.
绝密文件涉及最先进的军事装备。
注意：deal with,do with
1)二者都可表示"对付，应付，处理，安排"，但deal是不及物动词，可与how连用；而do是及物动词，只与what连用表示上述意义，不能单独使用。对比：
We don't know what to do with the waste materials./We don't know how to deal with the waste materials.
我们不知道怎样处理这此废料。
What's the best way of dealing with thieves?
对付小偷最好的办法是什么？
（此句中的deal with不可替换成do with）
2)deal with还可表示"论述，涉及到；与……相处"等意义，而do with 无此用法。如：
The books dealing with Asian problems sell well in colleges.论述亚洲问题的书在大学里很畅销。
That man is easy to deal with.这个人容易相处。
3.deal in表示“从事……的买卖”，“买卖；经营”。
A bookseller deals with books.
A bookseller deals in books.
书商经营书籍买卖。
This book deals in common errors.
This book deals with common errors.
这本书探讨常犯的错误。
They deal in books, furniture, hardware and spices.
他们经销书籍、家具、五金、香料。
This shop deals in daily necessities. 这家商店经营日用品。
They deal in antiques.
他们做古董买卖。