3)As to the question you raised in your last letter, I think that it is unanswerable.至于你在上封信中提出的那个问题,我认为那是无法回答的。
3.用以引出问题:as to必须位于句中,它前面出现的多是表达某种活动的动词、名词或形容词,其后引接wh-clause或特种不定式短语,表示在的问题上、围绕着的问题、说的问题来讲,所引出的问题很强的针对性。也有人认为,这里的as to多余,去之亦通,所以有时不必译出,例如:
1)i enquired of the clerk as to which documents were needed.我问办事员都需要哪些文件。
2)Hes very uncertain as to whether its the right job for him.对于这项工作是否适合于自己。
3)I have often wondered as to where some of the money vanished.我经常感到奇怪,一部分钱怎么就突然不见了。
4)Meditating as to what he should do he returned to his office. 他一边思考着应该做的事情,一边返回办公室。
4.引出做事依据:as to和后面所接的名词一起放于句末,此时as to的含义是按照、根据、依据,而as for则无此义,不能这样使用,请看例句:
1)The shoes are correctly placed on the shelves as to their sizes and colors. 根据大小和颜色的不同,鞋子整齐地摆放在货架上。
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