1.需要；必需to require sth/sb because they are essential or very important, not just because you would like to have them
Do you need any help?你需要帮忙吗？
It's here if you need it.你要的话就拿去吧。
Don't go─I might need you.别走，我可能要你帮忙。
They badly needed a change.他们迫切需要变革。
Food aid is urgently needed.迫切需要食物援助。
What do you need your own computer for? You can use ours.你干吗还要自己买电脑？你可以用我们的。
I don't need your comments, thank you.谢谢，我不需要你来评头论足。
I need to get some sleep.我需要睡会儿觉。
He needs to win this game to stay in the match.他得赢下这场比赛以免被淘汰出局。
You don't need to leave yet, do you?你不必现在就走吧？
This shirt needs to be washed.这件衬衣该洗了。
This shirt needs washing.这件衬衣该洗了。
2.~ to do sth（表示应该或不得不做）有必要used to show what you should or have to do
All you need to do is complete this form.你要做的就是填好这个表格。
I didn't need to go to the bank after all─Mary lent me the money.我最终还是不必去银行了，玛丽借我钱了。
1.~ (not) do sth（表示没有必要或询问是否有必要）需要used to state that sth is/was not necessary or that only very little is/was necessary; used to ask if sth is/was necessary
You needn't bother asking Rick─I know he's too busy.你不必费神去问里克，我知道他太忙了。
I need hardly tell you(= you must already know) that the work is dangerous.这工作很危险，这就不用我说了。
If she wants anything, she need only ask.她想要什么东西，只要开一下口就行了。
All you need bring are sheets.你需要带的就是床单。
You needn't have worried(= it was not necessary for you to worry, but you did) ─ it all turned out fine.你本不必担心，一切都很顺利。
Need you have paid so much?你用得着花那么多钱吗？
1.[sing][u]需要；必须a situation when sth is necessary or must be done
to satisfy/meet/identify a need满足╱迎合╱看出某种需要
There is an urgent need for qualified teachers.迫切需要合格教师。
We will contact you again if the need arises.如果有必要，我们会再次和你联系。
The house is in need of a thorough clean.这房子需要来个大扫除。
There is no need for you to get up early tomorrow.你明天不必早起。
I had no need to open the letter─I knew what it would say.我没必要拆开那封信，我知道里面会说些什么。
There's no need to cry(= stop crying) .不要哭了。
2.[c][u]特别需要；迫切要求a strong feeling that you want sb/sth or must have sth
to fulfil an emotional need满足感情的迫切需要
She felt the need to talk to someone.她特别想和人聊聊。
I'm in need of some fresh air.我很想呼吸一点新鲜空气。
She had no more need of me.她再也不需要我了。
3.[c][usupl]需要的事物；欲望the things that sb requires in order to live in a comfortable way or achieve what they want
financial needs经济上的需要
a programme to suit your individual needs满足你个人需要的项目
to meet children's special educational needs满足儿童的特殊教育需求
4.[u]（食物、钱或生活来源的）短缺，缺乏the state of not having enough food, money or support
The charity aims to provide assistance to people in need .这个慈善机构的宗旨是向贫困者提供帮助。
He helped me in my hour of need .在我生活困难的时候他帮助了我。
There's always food in the freezer if need be.如果需要，冰箱里总有食物。
There's always food in the freezer if need be.如果需要，冰箱里总有食物。
Rather than a cell phone needing a minute to upload a compressed megapixel-size image, it might be able to handle 10 such images a second.
行动电话传送压缩过的百万画素相片将不再需要一分钟，一秒钟就可能传送10张。
This has nothing to do with him needing a note to get out of gym?
这跟他需要假条才能离开学校无关？
It also brought with it lots of features we ended up not needing and which we had to spend time carving out in the name of memory footprint.
不过它也给我们提供了诸多特性的支持，我们不需要开发新特性，但是我们也需要时间来做这件里程碑式的工作。
If you see learning as needing to acquire a particular chunk of information you won't be able to see learning when they're playing.
如果你把学习当作需要获得某些具体信息，他们在游戏时，你就看不到他们在学习。
But this nice young man told me a sob story about needing money for a bus ticket to see his dying mother, so I gxdye him two dollars.
但是，这个看上去挺不错的年轻人告诉我他需要钱坐公共汽车去看他那快要死的妈妈。他说得这么悲惨，我就给了他两块钱。
Is useful when restoring a replicated database that has no replication objects needing to be restored.
如果要还原的复制数据库没有需要还原的复制对象，
The number of people needing food aid in south Sudan has quadrupled in a year to more than four million, the UN's World Food Programme says.
联合国世界粮食署称，苏丹南部地区需要食物援助的人数在一年时间里涨了四倍，现在总数超过了四百万。
While never allowing herself to be seen to be needing help, she did take advice, and relied quite heavily on trusted experts.
她不愿让人们察觉到她需要别人的帮助，但实际上采纳了别人的建议，依赖她信任的专家的意见。
But establish manpower and material resources, and financial resources needing to throw into a great quantity like the brand.
而创建品牌一般需要投入大量的人力、物力和财力。
Each time an entry is inserted, if the length of that chain exceeds some threshold, that chain is marked as needing to be resized.
中，每次一个条目插入的时候，如果链的长度超过了某个阈值，链就被标记为需要调整大小。
But this nice young man told me a sob story about needing money for a bus ticket to see his dying mother, so I gave him two dollars.
但是这个英俊而年轻的男人告诉我他需要钱买汽车票去见他濒死的妈妈，所以我给了他2美元。
The sense of needing to measure up to some standard can be part of this as well.
同样的，需要去达到标准的感觉也属于其中的一部分。
In other words, she sort of gives birth without needing a man, just to be on principle.
换句话说，她不需要男性就完成了生产，只是打个比方。
This was a colossal fight, needing huge amounts of money, and engaging the enemy through overwhelming force.
这场战争是巨大的，需要大量的金钱，而且要以绝对优势来战胜敌人。
Some of the pellets hit him in the face, and he ended up needing an ambulance ride and hospital treatment.
一些散弹射中了他的脸，最终他不得不被救护车送到医院并进行治疗。
Finally, we wanted to make it easy to change the look of a document without needing to adjust all the element-level formatting.
第四，使改变文档的外观变得容易，而不需要调整所有（组成文档的）部分的格式。
When I saw the ball in the net in the last minute, with Valencia needing to score two, it was like a golden goal.
当我看到最后一分钟球破门入网，而这意味着瓦伦西亚必须攻进两个球才行，这是一粒金子般的进球。
The invention provides a sealing member used for sealing two planes or cambered surfaces of a component needing to be sealed.
一种密封件用于需要密封部件的两个平面或弧面之间的密封。
So the thought of having lost it and needing to replace it really rattled me. I hadn't realised how much I'd come to depend on it.
因此，一想到它丢了以及得再弄个手机，我就着实有些懊恼。我以前没有意识到我是如此地依赖它。
The European sovereign debt issue has risen again with Portugal likely needing aid; how much and when are the only questions remaining.
葡萄牙可能需要援助使得欧洲主权债务问题再次浮出水面；至于需要多大程度的援助，什么时候需要援助只是时间问题而已。
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