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1、as to &as for区别 as for 与as to区别as for 与as to区别as to &as for区别as for (至于，就方面说)和 as to (至于；关于)这两个复合介词在含义上相当接近，但在用法上差别很多。下面谈它们的这些差别。 1as for 1)用以转换话题：在有前文的情况下as for总是出现在下文的句首，用来引出另外一方或者新的谈话内容，但与前文内容也有一定的联系，起到补充前文又突出后文的作用，使之与前文形成对照，译作“至于”。例如： You can have a bed；as for him，hell have to sleep on the floor
2、 Much pasture land is underwater；and as for the grain, most of that has been ruined 2)用以表现态度：as for还可以用来表示讲话人对某人或某物持有“轻蔑”或“冷淡”的态度，甚至有憎恶之感，讲话时要重读引出的词语并在其后稍作停顿，以示强调，口气上带有嘲讽意味，译作汉语的“至于嘛”。例如： As for you，I never want to see you here in my home again As for his songs，I suppose youve read the sarcastic rev
3、iews ! 2as to 1)表示涉及某点：as to常放于句中，表示“关于方面”、“有关之事”，但为了突出要提及的人或事之时，也可将as to置于句首，以示强调。但只涉及内容，而不涉及讲话人的态度。例如： His wife，an old teacher，has n0 complaint as to salary As to your ability to overfulfil the target，I never had the slightest doubt 2)用以重提旧事：as to引出的内容都是前文曾经提到过的或者谈话对方都有所了解的，表示“说到”之义。，例如：As to doin
4、g that，I havent decided yet As to the question you raised in your last letter，I think that it is unanswerable 3)用于提出问题：as to必须位于句中，前面出现的大都是表达某种心理活动的动词，形容词或名词，其后引接出wh-clause或who-to-v结构，表示“在的问题上”、“就问题来讲”，所引出的问题都有很强的针对性。但有人认为这里的罄to显得多余，去之亦通。所以，有时也不必译出。例如： There is some doubt as to whether the proposal
5、is practicable I enquired of the clerk as to which documents were needed 4引出做事的依据：as to还有“按照”、“根据”的含义，而as for则无此义。例如： The shoes are correctly placed on the shelf as to size and colour The items on the agenda are listed as to order of importance 综上所述，as for 和 as to在确切含义的表达和具体用法上都是有很大差别的，不能将二者混为一谈。在英语
6、中表示“就而论”“有关”或“至于”含义的词语颇多，其中 as to 和 as for 亦表此义，但二者用法不尽相同。as to 的功能类似于 with regard to， regarding， on the matter of， concerning 等，常用于相当正式的语境中，尤其用于争论和做出决定时。可放于句首或与 wh- 疑问词引导的动词不定式和名词性从句连用（有时可省略），而 as for 无此种用法。例如：As to the journey， we must decide about that later.至于旅行，我们必须以后再作决定。As to the flood， I hav
7、e heard nothing.至于那次水灾，我没听到什么。Nobody could decide （ as to ） what to do.谁也不能决定该做些什么。He is very uncertain as to whether its the right job for him.关于他究竟是否适合做这项工作，他实在拿不准。A question arose as to who should be the monitor.关于谁当班长的问题出现了矛盾。I want to find out as to whom this bicycle belongs to.我要打听出来这辆自行车是谁的。a
8、s to 有时用于表示 according to 的含义。例如：They sorted the eggs as to size and color.他们按照大小和颜色将鸡蛋进行分类。as for 和 as to 都可用于句首，引出一个与前一个话题稍微有些不同的话题，但 as for 在语体上不如 as to 正式，并且着重话题的转换，也就是说，它所引导的是前面尚未提到过的新的事情，因此它不能用于文章的开头。另外， as for 有时表达轻蔑的语气。例如：We had a delightful weekend in the country. As for the traffic， we had
9、no difficulty.在乡下我们度过了一个愉快的周末。至于交通，我们没有遇到任何困难。Much pasture land is under water； as for the grain， most of that has been ruined.大部分的牧场都进了水，至于谷物，则大部分都被冲毁了。You can have a bed； as for him， hell have to sleep on the floor.有一张床给你，至于他，就只能睡在地板上了。As for him， I know nothing.至于他，我一点也不了解。As for this subject， I couldnt remember.至于这个题目，我记不起来了。As for you， I never want to see you here again.至于你，我永远也不愿在此见到你。
