9A Unit 1 Grammar中学到it is adj of sb to do sth,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 foolish 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 go there. 她没有去这儿,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, bad, unkind, naughty, 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 save the lady. 你居然能救出那个妇女,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。