"要求"这个单词的辨析

要求,需求,请求,requiredemanddesirerequestclaim 请帮我辨析这五个词,辨析得好的追加积分

demand, request, require
1.demand主语是人时,表示坚决要求,坚持要做某事;主语是物时,指迫切需要。
Request意为“恳求,请求”,指通过正式手续提出的要求,口气和缓,态度礼貌。Require表示按照法规、权利提出的要求或命令,指客观需要,含缺此不可之意。
Cement is in great demand.水泥的需要量是很大的。
He demanded an apology from them.他要求他们道歉。
All I requested of you was that you came early.我对你的唯一要求就是早点来。
I have done all that is required by law.我已做了法律规定的一切。
The situation requires that I should be there.形势需要我呆在那儿。
2.后面跟宾语从句时,从句后谓语动词都要用虚拟语气,即should加原形动词或动词原形。例如:
The teacher requested that each of us(should)go there at once.老师要求我们每一个人要马上到那儿去。
The teacher required that all of us(should)attend the meeting.老师要求我们大家都出席这次会议。
The teacher demanded that Mary(should)give a right answer.老师要求玛丽给一个正确的答案。
3.request后接sb. to do sth., demand后接of sb. to do sth., 而requre后接两者均可。例如:
Mr.White requested his daughter to leave here.怀特先生要求他的女儿离开这里。
Mr.Green required his students to keep silent.(=Mr. Green required of his students to keep silent.)格林先生要求他的学生保持安静。
He demanded of me to shut the gate.他要求我关上大门。
故若把上面2中的三个含虚拟语气的宾语从句改为简单句时,应分别为:
The teacher requested each of us to go there at once.
The teacher required all of us to attend the meeting.
The teacher demanded of Mary to give a right answer.
4.require表示“需要”的意思,后可接动词不定式或动名词。接动词不定式时,应该用不定式的被动形式,接动名词,时,用动名词的主动形式(表示被动意义)。
例如:
The baby requires to be looked after. =The baby needs/wants to be looked after. =The baby requires/needs/wants looking after.
5.demand一般以事情作主语,而require的主语是人是物均可。例如:
This illness demands a long rest.这种疾病需要长时间静养。
I require warm clothing for the winter.我需要保暖的服装过冬。
This matter requires haste.此事需要快办。
注意:
①require(of)sb用于被动语态时,of不可省。如:
I have done everything that was required of me.
②demand后接from sb或of sb.
He demands help from/of me.
③demand后接不定式,不接动名词。
He demands to see my books. claim (根据权利提出)要求, 要求权, 主张, 要求而得到的东西,一般是比较正式的,像保险赔偿或一些法律上的用得比较多
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