如何区分It’s +adj.+of (for) sb to do sth

如何区分It’s +adj.+of (for) sb to do sth

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.