account for 与look for 有什么区别

eflect的本意,是“反射,反映出”,它是像镜子一样,先接收到一样东西,才能反映出来.在表示“说明、表现”这个意思时,它不是用言语来说明,只是通过一件事“折射”出另一件事.Her sad looks reflected the nature of her thoughts.她面带忧伤显出心事重重.
account for好理解,就是“通过解释来说明、表现”.He'll have to account for where every cent goes.他得说明所花掉的每一分钱的用途.
你这句话,填reflect.因为我不知道上下文,所以不好翻译

没有
account for = 说明（原因、理由等）； 导致,引起； （在数量、比例上）占； 对…负责
把什么考虑在内的词组 = take.into consideration

this part accounts for twenty percents of the whole one.
祝好!

不行的,后面是+sth(something)

1.The box consists of many parts.
2.His behavior accounts for what he said.(account for是解释的意思)
3.Reading occupies most of my free time.（占据的意思）
4.The doors of the palace were made of beaten gold.
5.The commission composes of a chairman and some other people.

是的account for sth
account for doing sth
是的 for of 都是介词
on account of 可以放在句首,句中
On account of your health,you must endeavour to shift off the care of your children.
由于你的身体状况,你必须设法卸掉照看孩子这一负担.
I had to be out all afternoon yesterday on account of some urgent business although I had a cold.
我本来就有些感冒,为了一些紧急业务,我昨天出去了一下午.

Careless driving should account for many accidents.

account for:[ ə'kaunt fɔ:]
说明(原因等)
v.(在数量方面)占
1.He could not account for his absence from school.
他无法说明他旷课的原因.
2.Petrochemicals today account for one fourth of all the chemicals made,in ten years this amount is expected to double.
石油化工产品现在已占所有化学制品的四分之一,十年后预计这个数目还要加倍.
3.The treasurer has to account for the money paid to him.
财务负责人必须说明交给他的钱是怎样用的.
4.He'll have to account for where every cent goes.
他得说明所花掉的每一分钱的用途.
5.He has been asked to account for his conduct.
他被要求解释他的行为.
6.Please account for your disgraceful conduct.
对你的可耻行为请作解释.

account for 主要偏重于“阐释,说明了.的原因”
make up 单纯的就是占有,占用；

神啊,你要讲的很清楚么?那得多少啊.不过偶,手痒试试.
开始啦
首先,because of ：意思为"由于,因为”,强调因果关系,在句中做状语,用时与其他成分不用逗号隔开.
例句：Sampras is likely to miss the train because of his got up later.
桑普拉斯由于起迟了可能错过火车.
第二,owing to,这个词呢他和because of 一样强调因果关系,不过他还可以做表语,当然状语也是可以的,做状语的时候可放于句首句末,但是用逗号隔开.
例句：Owing tp the bad weather , they missed the train at 9：00.
由于天气不好的原因,他们错过了9点的火车班次
第三,on account for ?是of 吧,不然把on去掉,account for 是个词组
——on account of,做“因为”讲,长长接名词,与because of 还有owing to 一个意思,但是语气方面就比较正式了,可接状语、表语（包含了because of 和owing to）,但是他不做定于,所以例句方面,上面的两个例句都可以改成on acount of,不过偶还是打出来吧
例句： Your illness is on account of the lack of exerice.（这是做表语滴,别的偶就不举例了哈）
第四, at、from也是的,这种介词表示原因很局域的,一般不做原因表示的,只是翻译时会将其译成“由于,因为”
第六,with 不是一般表示伴随着发生的么,就做原因讲是可以的说,不过这位同志我跟你讲,包括后面的of 还有for 这些介词,你要搞清楚他们的具体用法,我说的用法不是表示原因的用法,而是作为介词他们之间的区别,这样你就会知道了,不过我还是说点吧,for后面一般加句子,at 、from、of后加的一般是短语,还有with ——他的用法太广了,不好说,但是做原因的话,这的看你遇到的句子才能判定的说~~
*****偶建议你把,at from with of for 这几个介词的区别搞清楚了,再想想有米有问题.
（妈呀,累死偶滴说哦~~）不解hi偶吧

allow for:考虑到
1.In calculating profit,retailers must allow for breakage and spoilage.
计算利润时,零售商们必须考虑到破碎和损坏情况
2.It's best to allow for shrinkage when buying cotton clothes.
买棉布衣服时最好考虑到它们的缩水率.
3.In work with this cloth,be sure to allow for shrinking.
用这种布缝衣,务必考虑到洗后会缩水.
4.We must allow for the train being late.
我们必须想到火车会晚点的.
5.You must allow for five per cent wastage in transit.
在运输中要允许有百分之五的损耗量.
account for 说明(原因等) v.(在数量方面)占
1.He could not account for his absence from school.
他无法说明他旷课的原因.
2.Petrochemicals today account for one fourth of all the chemicals made,in ten years this amount is expected to double.
石油化工产品现在已占所有化学制品的四分之一,十年后预计这个数目还要加倍.
3.The treasurer has to account for the money paid to him.
财务负责人必须说明交给他的钱是怎样用的.
4.He'll have to account for where every cent goes.
他得说明所花掉的每一分钱的用途.
5.He has been asked to account for his conduct.
他被要求解释他的行为.
6.Please account for your disgraceful conduct.
对你的可耻行为请作解释.

The scientist every strict demands on themselves, is a good interpretation of why he can achieve such a success.

you must account for what you did in the accident.

(1)on account of adv.由于(2)take into accountv.考虑,重视(3)account for v.说明,占,解决,得分(4)act as v.担当
(5)in addition adv.另外,除此之外(6)one after another adv.接连地(7)be anxious to do sth 急于,渴望做某事
(8)take sth.in one's arms 拥抱某人,紧拥某人(9)pay attention(to)v.注意(10)be away from 远离,离开

account for
有“说明、解释…原因,对...负有责任,占有,占...百分比”等含义.
做“占...百分比”解释,表示占有一定比例含义,多接分数,如一半、1/5等,当然也有接百分数的情况.
APEC members account for more than half of the world's economic output.
亚太经合组织成员的经济总量在世界占一半以上.
Petrochemicals today account for one fourth of all the chemicals made, in ten years this amount is expected to double.
石油化工产品现在已占所有化学制品的四分之一,十年后预计这个数目还要加倍.
make up 含义较多,有“弥补、组成、化妆、整理”等含义.
但本意是“组成、构成”,有一个物体由几部分拼凑、连接而成的含义,相当于 compose.
Farming and mining make up most of the country’s industry
The medical team was made up of twelve doctors.
The boy students in our class make up two fifths of the whole students.
take up没有占多少百分比的意思　
主要含义：开始从事、占去时间（花费时间）、占去空间、拿起等
　When did he take up football?
　The work took up all his time.
　The piano takes up too much space.
He took up arms and rushed out.

你可以参考下面的例子进行对比：
account for
说明(原因、理由等),是…的原因；解释,对…作出解释(或说明)：
Jack could not account for his foolish mistake.
杰克无法解释自己的愚蠢错误.
导致,引起,起因于：
The flood accounted for the bad crop.
水灾导致歉收.
对(或为)…负责：
You will have to account for the disappearance of the money.
你要对丢失了钱负责.
共计达；(在数量、比例上)占：
It accounts for 15 per cent of all air accidents.
它占所有空难的15%.
explain for
为什么而解释.
Let's me explain for my fault.
让我为我的过失来做解释.

The current petrochemicals are account(ed) for one quarter of the chemical related products.

You are late everyday this week, and how would you account for that?