It 的特殊用法

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It 的特殊用法

1强调结构 It is + (从句 / (从句 / 状语 (名词 / 介词短语 / 句)+ that / who / whom 特别要注意 (特殊) 问句和宾语从句中的强调结构 (Who /What) was it that + 谓语 + 其他

(Wh-- ) was it that + 主语 + 谓语 + 其他 ?回答:Yes, it was; No, it was not; Whatis that也是强调结构) 2形式主语 代替

1、不定式 It is + 形容词/名词 + for sb. to do sth.; (表示做某事怎样用for,形容词有:easy / difficult / right / wrong / important / necessary /essential / a (n) pleasure / pity / honor

It is + 形容词 + of sb. to do sth (表示主语特征时用 of; 形容词有:赞成good, nice, kind, clever, brave,

bold, honest, polite, careful;责备wrong, bad, rude, cruel, careless, naughty, silly, foolish, stupid

It takes / costs / requires + n.+for sb.to do sth.

= It takes sb. + n.+ to do sth.

2、动名词It is no use / good doing sth; It is not any use / good doing sth.. It is worthwhile doing sth. It isn't much fun doing sth; It is simply a waste of time doing sth;

3、主语从句 It is + 形容词 / 名词 / 现在分词 / 过去分词 + thatlikelyclear, possibleobviousnecessaryimportant

essentialadvisablestrange amazinga pitya facta wonder a shame an honorno wondersurprisingannounced believed considered expectedestimatedhopedknownreportedrumoredsaidsupposed thoughtsuggested, advised, demanded, ordered, requested, It seems /appears / happens /turned out / proved that; It occurs to sb./ It strikes sb. that 3) 形式宾语 代替

1 不定式 find / think / consider / regard / feel /make + it + 形容词/名词 (做宾补) +for sb. to do; 2 动名词find/think/consider/feel/make + it + 形容词/名词+ doing; 3 宾语从句 find/think/consider/feel/make + it + 形容词/名词 + that 4) 表时间

1 It is + 一段时间 + since + 瞬间动词的过去时: …已经多久了;② 延续性动词的过去时:指该状态结束以来已有多久了

2 It was + 时间点 + when + 动词的过去时:已经是…

3 It will be / wont be + 一段时间 + before + 动词的一般现在时: 要过多久…/过了不久

It was/wasnt + 一段时间 + before + 动词的过去时:要过多久…/ 过了没多久

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