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1、 如何区分Its +adj.+of (for) sb to do sth Its +adj.+ofsb. to do sth.句型在英语中运用较为频繁,尤其在口语中。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：Its 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:Its nice of yo
2、u 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Youre nice to say so.也可,意思不变。有时也可用简缩句型Its + adj.+ of sb. 或 Thats + adj. + of sb., 如:Its wrong of you . 你错了!Thats 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:
3、Its 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:Its friendly of y
4、ou 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Its + adj.+ for sb. to do sth. 句型含义大不相同, Its + 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，ni
5、ce，right，wrong，clever，careless，polite，foolish等，用of sb.。 Its very kind of you to help me. 你能帮我，真好。 Its 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。 Its very dangerous for children to cros
6、s the busy street. 对孩子们来说，穿过繁忙的街道很危险。 Its 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。 Its 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。 Its very important for you to practise your oral English in daily life. 在日常生活中练习你的英语口语非常重要的。
