want
单词辨析：
既可指需要某事物，也可指需要某人做某事，常可与 need 换用。
Children want/need plenty of sleep.
儿童需要大量的睡眠。
The house wants/needs repairing/to be repaired.
这房子需要修葺。
Do you want/need me to pick you up at the station?
你要我到车站接你吗？
指为成功做成某事而需要某事物，其主语通常为事物，而宾语多为抽象名词。
Success demands persistence.
成功需要坚持。
The task demands professional knowledge.
这项任务需要专业知识。
An important meeting demanded his presence.
一个重要会议需要他出席。
最普通用词，指需要必不可少的东西或需要做某事，强调所需之物或需做之事的重要性。
The children need water and food.
孩子们需要水和食物。
The car needs repairing.
汽车需要维修。
I need to know what time it is.
我得知道现在几点了。
词义同 need，常可换用，但语气较弱。
The mastery of a language requires/needs painstaking effort.
要学好一种语言，必须下苦工夫。
This letter requires/needs to be answered at once.
此信需要立即回复。
These babies require/need careful looking after.
这些婴儿需要细心照看。
指供小于求，即达不到需要或规定的数量。
There is no shortage of funds.
资金并不缺乏。
The bad harvest led to severe food shortages.
歉收造成食物严重短缺。
The war was lost because of a shortage of munitions.
战争因军火不足而失败。
指某物根本不存在或完全短缺，也指某人未在现场。
in the absence of evidence
缺乏证据
She noticed the absence of illustrations in the dictionary.
她发现那本词典里没有插图。
Please take care of my mother during my absence.
我不在时，拜托你照看我的母亲。
普通用词，指完全没有或不够充足，通常用于抽象事物。
Hard work can often make up for a lack of ability.
努力工作常可弥补能力的不足。
His lack of money kept him from going to the concert.
他因缺钱不能去听音乐会。
Lack of time prevented me from writing to my parents.
由于没有时间，我没能给父母写信。
指完全没有或短缺某物，强调所缺之物是必需的东西，使用范围比lack 要窄一些；也指因没有食物、钱等造成的贫困。
My son's always in want of money.
我儿子总是缺钱。
The kids are unhappy for want of love.
这些孩子因为缺乏爱而不幸福。
Many families are suffering from want.
许多家庭正遭受着贫困。
相关例句：
He has killed many in his time, and is wanted in at least three countries
他那个时候杀了很多人，现在至少有3个国家在通缉他。
They began to want their father to be the same as other daddies
他们开始希望他们的父亲能和别人的老爸一样。
I want to say how really delighted I am that you're having a baby
我想说你怀孕了我有多高兴。
Look, I wanted to apologize for today. I think I was a little hard on you.
听我说，我想就今天的事向你道歉。我觉得我对你有点过于苛刻了。
Her hair wants cutting.
她该剪头发了。
Do you want another cup of coffee?
你想再来一杯咖啡吗？