demand
单词辨析：
指强烈要求某事物，尤用于认为自己有权这么做时。
The workers demanded a break between 9:50 and 10:10.
工人们要求9点50分到10点10分之间为休息时间。
He demanded a clear answer from the board.
他要求董事会给出一个明确答复。
She demanded to know who was in charge of this action.
她要求知道谁负责这次行动。
指要求某人提供帮助、建议、信息等。
You are asking too much!
你要求过分了！
He was so busy that he had to ask for help.
他太忙了，不得不请求帮助。
The chairman asked for an explanation.
主席要求给出解释。
指因有权得到某事物而公开提出要求。
Most of those who claimed asylum were refugees.
那些申请政治避难者大多数都是难民。
The bank claimed payment from Susan.
银行要求苏珊付款。
They claimed losses from the express company.
他们就这次损失向那家快递公司提出赔偿要求。
指出于责任或常理而要求某人做某事，含期待之意。
The officer expected the policemen to wear police uniforms.
军官要求警察都穿警服。
This young couple expects a lot of their child.
这对年轻的夫妇对他们的孩子期望很高。
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。
相关例句：
There have been demands for services from tenants up there
那里的房客要求提供服务。
I had no right to make demands on his time.
我无权占用他的时间。
He said the task of reconstruction would demand much patience, hard work and sacrifice
他说重建任务将需要付出极大的耐心、艰辛和牺牲。
He was much in demand as a lecturer in the US.
他的讲座在美国很受欢迎。
Because of the slump in domestic demand, production has stopped.
由于国内需求大幅下降，生产已经停止。
The hijackers are demanding to speak to representatives of both governments
劫机者要求与两国政府的代表都进行对话。