【for作因为】as 和 for 做“因为”讲时的用法区别？_英语_甘蔗gn21
编辑： admin 2017-15-06
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as和for都有“因为”的意思.但是as比for的语气弱.as用来表示显而易见的原因,而for却有一种解释说明的语气.
例：as it is raining,we have to call of the meeting.
please forgive him,for he is only 13 years old.
for ,because,as,since这四个词作为连词,都有"因为"的意思,但它们在用法上有区别：
because 是从属连词,接表示直接原因的从句,一般放在主句的后面,也可放在主句前面,它表示的语气最强,在回答why的问句时,必须用because.
例如：The swimming pool won't be open today because they're making repairs.
游泳池今天不开放,因为他们在修理.
Why did you move to France?
你们为什么搬到法国?
Because my father found work in Paris.
因为我父亲在巴黎找到了工作.
注意：在英语中用了because后,不可再用so.
as 是从属连词,说明一般的因果关系,语气比because弱,说明比较明显的原因,它引导的从句通常放在句首,有时也可放在句末.
例如：As it is raining, you\'d better take a taxi.
天下雨了,你最好乘出租车.
since 意为"既然",表示对方已知的无需加以说明的原因或事实,语气比because弱,但是比as 强.
例如：Since we have no money, we can't buy that vase.
既然我们没钱,我们就不能买那花瓶.
Since everybody is here, let's begin our party.
既然大家都到了,那就开始我们的聚会吧!
for 是并列连词,用来附带解释说明前一分句的原因或理由,for引导的并列句,一般放在所要说明的句子的后面.
例如：I went to see him, for I had something to tell him.
我去见他,因为我有事要告诉他.
其他同学给出的参考思路：
as表示显而易见的原因，语气非常轻缓。
eg as it is going to rain, let's go home.
因为要下雨了，所以回家。“下雨”是“回家”显而易见的原因。
for有解释说明的意味，且一般不在句首，主从句间有逗号隔开。
forgive him, for he is only ten。
原谅他吧，因为他只有10岁。之所以要原谅他，是...
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互助这道作业题的同学还参与了下面的作业题
题1： for,since,as引导原因状语从句时分别的用法区别求详解,这方面很弱…[英语科目]
1.since较as意味略强.它们都可以表示较明显的或对方已知的原因.可分别译作“既然”和“由于”.since和as从句一般放在主句之前.例如：
Since his method doesn't work,let's try yours.既然他的方法不行,我们就试试你的吧.
As I didn't know how to do it,I asked the teacher.由于我不知道怎样做,就问了老师.
2.for是并列连词,位于两句之中,连接并列的分句.当for表示因果关系时,可与because换用,但在for前面须用逗号.例如：
You couldn't have seen him,because/for he wasn't there.你不可能见到他,因为当时他不在那里.
for除此之外了表示因果关系外,还可以述说对主句中的事实或看法的解释.例如：
It will rain,for it's getting dark,要下雨了,因为天气越来越暗了.
题2： because,since,as,for这几个词的用法区别[英语科目]
1) 关于 because：语气最强,表示直接原因,可用于回答 why 提出的问题、引导表语从句、用于强调句等,而其余三者均不行：
“Why didn’t he come?” “Because he was ill.” “他为什么没来?”“因为他病了.”
My stomach hurts because I have eaten too many apples.我肚子痛,因为苹果吃得太多.
That’s because you can’t appreciate music.这是因为你不能欣赏音乐.
It is because he is honest that I like him.是因为他诚实我才喜欢他.
(2) 关于 since 与 as：
a.两者所表示的原因都是人们已知的,即对已知事实提供理由,而不是表示直接原因.since 比 as 语气稍强,且比 as 略为正式,它们引导的从句通常放在主句之前,有时也放在主句之后：
As you weren’t there,I left a message.由于你不在那儿,我留了个口信.
Since you are wrong,you should apologize.你既然错了,就应该道歉.
b.since 可用于省略句,而其他三者不行：
Since so,I have nothing to say.既然如此,我无话可说.
(3) 关于 for：是并列连词(其余三者为从属连词),它有时可表示因果关系(通常要放在主句之后,且可与 because 换用)；有时不表示因果关系,而是对前面分句内容的解释或推断(也要放在主句之后,但不能与because 换用).比较：
The ground is wet,for (=because) it rained last night.地面是湿的,因为昨晚下过雨.
It must have rained last night,for the ground is wet this morning.昨晚一定下过雨,你看今天早上地面是湿的.(此句不能用 because 代 for）
题3： as,like,for作“像.一样”时用法区别,并举例[英语科目]
很早的时候,like是形容词,表示相象、相同、类似等意；as是连接词.
Samy and Sammy are very like.Samy和Sammy长得很像.
Paul behaved as a child（does）．保罗的举止像个小孩.（句子有省略）
后来,like作为介词使用,表示像…一样；as也可以作为介词使用了.
Paul behaved like a child．保罗的举止像个小孩.（句子没有省略）
再比较：
Let me speak to you as a father．让我以父亲的地位对你说说.（=I am your father and I am speaking to you in that character）
Let me speak to you like a father．让我像你父亲那样对你说说.（= I am not your father but I am speaking to you in the way your father might）
再后来,有些语法学家把以往like不允许作连词使用的规则也改了,用来代替引导方式状语从句的as.
I can't sing like I used to do．我不能像过去那样地唱了.（指唱的音色）
He writes just like his brother did when he was young．他写字的手法和他兄弟年轻时写的差不离.（指书法的风格和字型）
即使如此,like和as有时还是有些区别的.试比较：
The prisoner was hanged like a murderer．这个囚徒像杀人犯那样被处以绞刑（=…as if he were a murderer）.
The prisoner was hanged as a murderer．这个犯人作为杀人犯被处以绞刑.（这个犯人就是杀人犯）
题4： actas与actfor的用法区别是啥[英语科目]
1.act as (临时)担任,充当,起……的作用.如：A trained dog can act as a guide to a blind person.经过训练的狗可以担任盲人的向导.表示担任独一无二的职务,其前通常不用冠词.如：He acted as manager in my absence.我不在时他担任经理.I don’t understand their language; you’ll have to act as interpreter.我不懂他们的语言,你得当翻译了.
2.act for 代理(某人职务),代为(处理某事).如：Please act for me during my absence.我不在时请代理我处理事务.I acted for our captain while he was in hospital
题5： as,for作“当作”解释时的区别与用法asapresent?forapresent?[英语科目]
as, for表“作为、当作”
1.下列情况,二者可以通用.
①与build, serve, use等词连用表示用途时.如：
The house was built as (或for) a library.这房子是建作图书馆的.
The room serves as (或for)a meeting-room.这房间是用作会议室的.
This piece of wood can be used as(或for) a bookcase.这块木板可用来做书橱.
②与elect, choose等词连用,引出主语或宾语的补足语.如：
They chose him as (或for)their leader.他们选他为他们的领导.
Both of them were elected as (或for)the representatives to the meeting
他俩都被选为出席会议的代表.
2.下列情况下只能用as, 不能用for.
①表示职业、职位和官职.如：
He works in the school as a teacher of English.他在这个学校当英语教师.
Mr Wang is respected as a professor.作为一个教授,王先生受到人们的尊敬.
He was elected as chairman of the meeting.他被选为会议主席.
②扮演某角色.如：These ants act as guards and soldiers in time of trouble.
这些蚂蚁在出了乱子时,充当警卫和士兵.
The actor who appeared as Liu Ming was his friend.扮演刘明的那个演员是他的朋友.
③用在regard, look upon, treat等词后.如：
Today, Abraham Lincoln is regarded as one of the greatest of all American presidents.今天,亚伯拉罕·林肯被看作是美国最伟大的总统之一.
She took the leaflets regularly to the factory, looking upon this as her duty.她定期将传单带进工厂,把这项工作看成自己的责任.
They treat him as their own child.他们把他当作自己的孩子对待.
3.在下列情况下只能用for,不能用as.
①补足语表示“主观认识”时.如：
He was taken for a spy.他被当作奸细捉拿.
②补足语表示“交换”时.如：
The Negroes were sold for slaves.那些黑人被当作奴隶出卖了.
The old books can be changed for nothing.这些旧书什么也换不到.
③用在一些固定的词组中.如：
I know for certain.我确切知道.
He observed things carefully and never took anything for granted.
他仔细观察事物,从不想当然.
They were given up for lost.大家都认为他们已无生还的希望了.