Question

高手解答 for, because,since ,as的区别

详解，多点例句

Answer 1

　　because\x0d\x0a　　because引导原因状语从句语气最强，表示直接原因,常用来回答由why提出的问题，所引导从句可放在主句前，也可放在主句后。例如：\x0d\x0a　　"Why did you do it?" "Because Carlos told me to".\x0d\x0a　　We can't go to Julia's party because we're going away that weekend.\x0d\x0a　　Because he didn't catch the last bus, he had to walk home.\x0d\x0a　　Why are you late for school ? Because I missed the first bus.\x0d\x0a　　\x0d\x0a　　as\x0d\x0a　　as “由于,鉴于” 主从并重，从句说明原因，主语说明结果。说明比较明显的原因。多用于日常语中，常译为“由于”，从句一般放于主句前。例如：\x0d\x0a　　You can go first as you're the oldest.\x0d\x0a　　As you don't feel well, you had better stay at home.\x0d\x0a　　As he wasn't ready in time, we went without him.\x0d\x0a　　I must stop writing now, as I have rather a lot of work to do.\x0d\x0a　　As it was getting late, I decided to book into a hotel. As it is raining, you'd better take a taxi.\x0d\x0a　　\x0d\x0a　　since\x0d\x0a　　since “因为,既然” 侧重主句，主句表示显然的或已知的理由。强调说话者和听者双方都知道的原因，常译为“既然”，一般用在这样的句子里。例如：\x0d\x0a　　Since we've got a few minutes to wait for the train, let's have a cup of coffee.\x0d\x0a　　Since you are not feeling well, you may stay at home.\x0d\x0a　　Since everybody is here, let's begin the meeting.\x0d\x0a　　Since I am a boy, let me carry the case.\x0d\x0a　　Since/As you are busy, you had better not go with us.\x0d\x0a　　Since we have no money, we can't buy that vase.\x0d\x0a\x0d\x0a　　for\x0d\x0a　　for “因为,由于”表明附加或推断的理由，引导的分句前常有逗号。for分句不放句首.是用来附带解释或说明前一分句的原因和理由。例如：\x0d\x0a　　Day breaks, for the cock crows.\x0d\x0a　　It must have rained last night, for the ground is wet.\x0d\x0a　　I won't go in, for my father is there.\x0d\x0a　　He must be ill, for he is absent.\x0d\x0a　　I went to see him, for I had something to tell him.

Answer 2

(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)