中考英语知识点：it作形式主语和宾语
A形式主语 ⑴It’s +adj. +for/of +sb. to do sth. It’s very kind of you It’s important for you to learn English well. ⑵It’s time for sb.to do sth. It’s time for you to sing ⑶It seems that .....It seems that you are right. ⑷It’s one’s turn /job/duty to do sth. It’s your turn/job/duty to clean the desk. ⑸It’s +adj. that 从句It’s necessary/certain/natural that he wiil win. ⑹It’s no use /good doing sth.做某事没有用处/好处。 It’s no use /good eating too much ⑺It’s +一段时间since +一般过去时态从句或It has been +some time +since +一般过去时态从句It’s(been) five years since we saw last . ⑻It’s a pity that ......It’s a pity that only six pieces of music in total were recorded for the future world to hear. ⑼It is said that/It is consider that/It is believed that ......It is said that he became a famous pianist. B形式宾语 动词（feel，think，make,believe,consider,suppose等）+it +adj./n.+ to do sth. I think it necessary to learn English well.相关推荐:中考英语知识点：it的用法
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