.however 为什么不能和although 连用

.however 为什么不能和although 连用

although并不是单纯地表示让步,它还可以表示转折
although不能与but连用,是因为but是连词,although也是连词.一个连词只能
连接两个句子,两个连词则要有三个句子.
由于however翻译作“然而”时不是连词,而是副词,因此这与although不能与
but连用不一样.
由于自己刚开始也犯错了,不得不再表现得好像很啰嗦了；楼主要是不喜欢看的
话,直接跳过去看最后的总结好了,我自己要看
以下引自朗文辞典：
although:1.in spite of the fact that;THOUGH(1) 虽然,尽管
2.but;HOWEVER 但是,然而
though:1.used to introduce a statement that makes the other main
statement seem surprising or unlikely 虽然,尽管
however:1.used when you are adding a fact or piece of information that seems surprising,or seems to disagree with what you have just said
然而,不过,但是
yet:4.but or in spite of something 但是,而,然而；尽管…
but:1.in spite of something,or not as you would expect
但是,然而,尽管如此
2.used to add another statement to one that you have already made,to
say that both things are true 但与此同时；另一方面；不过；[诚然]…但
3.used like however,to explain why somethingdid not happen,why you
did not do something etc 只因为；只可惜
4.used after a negative to emphasize that it is the second part of the sentence that it is true 毋宁说,而是[用于否定之后表示强调]
in spite of:without being prevented by something;DESPITE
虽然；不顾；尽管…（仍…）
despite:in spite of something 尽管,不管,任凭
总结（个人见解,未免偏颇）：although表达了所陈述的一件事令人吃惊,或该
事不大可能发生,或与前面、后面所陈述的内容不相符的感觉,兼有“虽然……
但是”“尽管……仍然”的意思,即兼有though和however的意思,再用however
语意重复；however也与though的意思很相近,但是它们在陈述时所放的位置不
同,因此我们会把它们翻译做“然而”和“尽管”“虽然”.其实这样的翻译是
不准确的,以至于导致了理解不了however为什么不能与although连用
Although the car is old it still runs well.
也可以说：The car is old.However,it still runs well.(注意,这里有两
个句子）
但绝不能说：Although the car is old,however it still runs well.
还有,在这里还要顺便提一下,为什么however表示“然而”时会经常需要在后
面加逗号.原因是however是有其他意思的,而however用作别的意向时,不加逗
号便可.这样变成不加逗号时,可能引起歧义
我一直想不通的是,although后面为什么又可以加yet了
管它了,明年再想吧
悲剧了,竟然到了2010年了……
一觉醒来,没想到思路清楚多了.我想yet是起强调、加强语气的作用的吧.
比如：我感到很高兴.yet和这里的“很”差不多；而although和however的关系好比高兴和开心,总不能说：“我感到很高兴开心”吧
以上是我自己的理解