As far as 与so far as 有什么区别
They did not go as far as the others. 他们没有像其他的人走得那么远。
（此句的as far as可以改作so far as）
（二）在表示“直到……程度”之意的借喻说法中，as far as和so far as都可使用，但前者不及后者用得普遍。例：she went so far as （or as far as） to call him a coward. 她甚至骂他是儒夫。
（三）在表示“就……而论”之意时，as far as和so far as可互换使用。例： As （or So） far as I koow，she will be away from Macao for two months.
据我所知，她将要离开澳门两个月。
As （or So） far as my knowledge goes，there is no such word in English.
据我所知，英语里没有这样一个字。
(四）在表示“只要”、“尽……所能”之意时，应用as far as，不用so far as。例： I'll do my utmost to help you as far as I can.
只要可能，我一定竭尽全力来帮你。 Eric Partridge在他编著的Usage and Abusage一书中写道（第44页），在用作比喻意义的叙述句里，so far as比as far as用得普遍，他举了这样一个例子：so far as I can see，your idea is admirable.
2.一、在表示during the whole time that(长达……之久)或while(只要)的含义时,往往用as long as。如:
1. they all continued their regard for me as long as they lived. 他们毕生都在关心着我.
2. For almost as long as Juanita could remember, adding, subtracting, multiplying, and dividing seemed as easy as breathing, and as natural. 在胡安妮塔的记忆中,加减乘除对自己来说早就是如同呼吸一样简单而自然了.
3. As long as there is life there is hope. 留得生命在,不怕没希望.
二、在表示on condition that, provided that或if(只要,如果)的含义时,用as long as或so long as的情况均很常见。如:
1. You can go out, as / so long as you promise to be back before 11 o'clock. 你可以出去,只要你答应在11点以前回来.
2. I'll accept any job as / so long as I don't have to get up early. 只要不必早起,任何工作我都可以接受.
3. So / As long as electric current flows through a wire, there is a potential difference. 只要有电流通过,导线就有电位差.
4. these stories reinforced the idea that all individuals, no matter how poor, were capable of becoming wealthy so / as long as they were hardworking. 这些故事强化了一种思想,那就是,所有人,不管有多穷,只要勤劳,都能变富有.
三、在表示since, considering that(既然,因为)的含义时,多用as long as。如:
1. As long as we've driven this far, we might as well go on. 我们既然已经驶得这么远了,就不妨继续前进.
2. As long as you are here, go on. 你既然已经来到这里了,就干吧.
3. As long as you are going, I'll go too. 既然你要去,那么我也去.
四、有时,as / so long as与if only同义,由它引导的状语分句可不依附主句而单独使用,表示说话人的希望、愿望或遗憾心情等。如:
—It's said it's going to turn colder and freeze later on. 听说过些时候天气要变冷,有冰冻.
—As long as it doesn't spoil the weekend. (=I hope that it doesn't spoil the weekend.) 只要不把周末弄糟了就没事.
五、在用as / so long as连接的从句中,当其谓语为be,而主语和主句的主语相同时,则从句的主语和be可以省略。如:
I'm sure we are safe as long as(we are) in his care. 我深信只要在他的保护下,我们就会平安无事.
as far as与so far as 的区别：
as far as可用于肯定句或否定句，表示直到…为止时，例如：
As far as I know he'll be away for three months. 据我所知，他将外出三个月。
I'll keep you company as far as the station. 我将与你结伴到车站。
so far as只能用于否定句，表示直到…程度的借喻说法中都可用，例如：
He wouldn't go so far as to refuse to come to the meeting, would he? 他不至于不来开会吧？
He not only ignored the criticism of the others but went so far as to be sarcastic.他对大家的批评置若罔闻，甚至反唇相讥。
拓展资料
As far as的语义分析：
首先，从语义角度来看，as far as有其字面本义、引申义，以及作为固定习语的含义。其次，从结构角度来看，as far as可以用作连词（从而接从句），也可以用作介词（从而接名词短语）。
当as far as用作字面本义时，其意思取决于far （远的）的含义，此时它就是一个比较结构。因此，as far as就表示“与……一样远”。
例如：Broad prairies stretch out as far as the eye can see.解析：从字面来看，as far as the eye can see可以理解成“与眼睛所能看到的距离一样远”或者“在肉眼看得见的范围内”。这就相当于我们汉语所说的“一望无际”。因此，整个句子可以译成“辽阔的大草原一望无际”或者译成“放眼望去都是辽阔的大草原”。以上as far as表达的是空间距离。
我们也可以引申为表达时间上的距离。
例如：These ideals were nurtured in me as far back as I can remember.解析：从字面来看，as far back as I can remember可以理解成“与我所能记忆的时间一样长”。整个句子可以译成“自打我记事起我就有了这些理想”。
除了表达空间距离和时间距离之外，as far as还可以表达程度。
例如： Our concern about our fellow men extends only as far as our pocketbook or our discomfort.解析：这句话字面意思是，我们对同伴的关心程度只能到钱包或不便为止。言外之意，我们可以对同伴表示关心，但不能让我们破费或是给我们带来不便。由此可见，这里as far as表达了一种程度含义，指的是关心到何种程度。
（一）用于指距离，表示“直到……为止”之意时，as far as既可用于肯定句，也可用于否定句，但so far as只能用于否定句中。
（二）在表示“直到……程度”之意的借喻说法中，as far as和so far as都可使用，但前者不及后者用得普遍。例：she went so far as （or as far as） to call him a coward. 她甚至骂他是儒夫。
（三）在表示“就……而论”之意时，as far as和so far as可互换使用。例： As （or So） far as I know，she will be away from Macao for two months.
据我所知，她将要离开澳门两个月。
As （or So） far as my knowledge goes，there is no such word in English.
据我所知，英语里没有这样一个字。
（四）在表示“只要”、“尽……所能”之意时，应用as far as，不用so far as。例： I'll do my utmost to help you as far as I can.
区别一：
As far as I know, he's going to Chicago.（用在更加正式的场合）
So far as I know, he's going to Chicago.（用在一般的/顺便一些的场合）
区别二：
as far as used when you are asking or talking about the distance between two places or the distance that has been travelled or is to be travelled：（表示“距离”时，as far as在肯定、否定句中都可用，但so far as只能够用在否定句中）
We'll go by train as far as London, and then take a bus.
We didn't go as far as the others.（可用so far as）
区别三：
as far as used when you are asking or talking about the degree to which something is true or possible（表示“程度”意义时，只能用as far as）：
His parents supported him as far as they could.
Plan your route in advance, using main roads as far as possible.
拓展：
[as far as]
只要;远到…;据…;直到…为止
例句：
1、As far as I'm concerned the officials incited the fight.
在我看来，是官员们煽动了这场争斗。
2、It only lasted a couple of years, as far as I know
据我所知，它仅仅维持了两三年。
[so far as]
只要
例句：
1、I would go so far as to say it's positively neurotic.
我可以这么说，这绝对是神经过敏。
2、So far as I am aware, no proper investigation has ever been carried out into the subject.
据我了解，目前对该问题尚未进行过正规的调查。
They did not go as far as the others. 他们没有像其他的人走得那么远。
（此句的as far as可以改作so far as）
（二）在表示“直到……程度”之意的借喻说法中，as far as和so far as都可使用，但前者不及后者用得普遍。例：she went so far as （or as far as） to call him a coward. 她甚至骂他是儒夫。
（三）在表示“就……而论”之意时，as far as和so far as可互换使用。例： As （or So） far as I koow，she will be away from Macao for two months.
据我所知，她将要离开澳门两个月。
As （or So） far as my knowledge goes，there is no such word in English.
据我所知，英语里没有这样一个字。
(四）在表示“只要”、“尽……所能”之意时，应用as far as，不用so far as。例： I'll do my utmost to help you as far as I can.
只要可能，我一定竭尽全力来帮你。 Eric Partridge在他编著的Usage and Abusage一书中写道（第44页），在用作比喻意义的叙述句里，so far as比as far as用得普遍，他举了这样一个例子：so far as I can see，your idea is admirable.无事.
