Question

如何区分It’s +adj.+of (for) sb to do sth

Answer 1

该句型通常表示说话人对客观事件的惊讶、兴奋、懊悔、难过等感叹情绪，其实相当于感叹句。如：It’s very kind of you to help me. 你能帮助我，真是太好了！该句型与how引导的感叹句可以互换,故上句可以改为:How kind it is of you to help me ! 或 How kind of you to help me !在口语中, it is经常被省略,再如:It’s nice of you to say so.你这样说,真是太好了!可以省略为Nice of you to say so.当然此句改为You’re nice to say so.也可,意思不变。有时也可用简缩句型It’s + adj.+ of sb.或That’s + adj. + of sb.,如:It’s wrong of you .你错了!That’s lovely of her.她多可爱呀!该句型中用作表语的形容词常见的有如下几类:一、表示聪明或愚蠢的形容词,有clever, wise, foolish, stupid, silly, unwise, dumb(愚笨的), absurd (荒谬的)等,如:It’s silly of him to do such a thing. 他竟干出这样的事,真是愚蠢!二、表示正确或错误的形容词,有right ,wrong, correct, incorrect等,如:It was right of her not to come here.她没有来这儿,太对了!三、表示好坏等品性的形容词,此类词较多,有good, nice, kind, sweet, friendly, lovely, wonderful, jolly(快活的), bad, unkind, naughty, wicked(坏的,邪恶的)等,如:It’s friendly of you to come and see me . 你能来看我,真够朋友!四、表示褒义或贬义色彩的形容词,有brave, polite, careless, selfish等,如:It was brave of you to manage to do it. 你居然能做成这件事,真勇敢! 值得注意的是,该句型与It’s + adj.+ for sb. to do sth.句型含义大不相同, It’s + adj.+ for sb. to do sth.结构是一个陈述句,表示说话人对客观事件的决断,比较正式,希望大家学习时注意。 若形容词是描述不定式行为者的性格、品质的，如kind，good，nice，right，wrong，clever，careless，polite，foolish等，用of sb.。 It’s very kind of you to help me. 你能帮我，真好。 It’s clever of you to work out the maths problem. 你真聪明，解出了这道数学题。 若形容词仅仅是描述事物，不是对不定式行为者的品格进行评价，用for sb.，这类形容词有difficult，easy，hard，important，dangerous，（im）possible等。 It’s very dangerous for children to cross the busy street. 对孩子们来说，穿过繁忙的街道很危险。 It’s difficult for us to finish the work. 对我们来说，完成这项工作很困难。 注意○ ○○○○○○○○○○○ of sb. 的句型通常都可转换为不定式作状语的句子，但for sb. 句型不可以。 It’s very nice of you to offer me a seat. = You are nice to offer me a seat. 十分感谢你给我让座。 It is careless of him to lose so many things. = He is careless to lose so many things. 他丢了这么多东西，真是太粗心了。