全面总结It用法及相关语境练习.docx

A. It用法第一类：It充当句子的形式主语，代指不定式to do,动名词v.ing及 that从句备注1・（It is） no wonder/surprise+ that cl …难怪……例：It is no wonder that she is so excellent since she is so hardworking.她学习如此勤奋，难怪她如此优秀口 语中，no wonder前的it is经常省略；2. It is a pity/shame for sb. to do /that cl.某人做某事 令人遗憾例:What a big pity it is for him not to make good use of the chance!他没有好好利用这次机会真是太可惜了！此类句型中的名词 还有：a shame, a （big）surprise, sb.'s belief 等3.It is one's responsibility/duty to do sth・/that cl.做某事是某 人的责任例：It is everyone's responsibility/duty to respect and take care of the elderly.尊重照顾老年人是我们每个人的义务职 责。

4・ It is one's （great）pleasure / honor to do sthJthat cl.某人倍感咼 兴/荣幸做某 事例: It is my great honour to give a speech to all of you about building a harmonious school!我很荣幸在此做关于创建和谐校园的演 讲！例：It is always a pleasure to greet a friend from afar.有朋自远方来，不亦乐乎5.It is/was the+序数词 + time for sb. to do/ that sb. have/had done sth.某人第x次 做某事例：It is/was the first time that he has/had tried a ski. but he is/was doing well.这是他第一次尝试滑雪，但他表现很棒1) 此句型中可用This 代替 It;2) that从句的时态 注意前后一致6.It is adj. for sb. to do sthJthat cl.It is adj. of sb. to do sthJthat cl.某人做某事 怎样。

例:It is quite necessary for us to read different English materials to enlarge our vocabulary.=It is quite necessary that we （should） read different English materials to enlarge our vocabulary.为了扩大我们的词汇量，我们 必须阅读不同的英语材料例：It is wise of parents to read bed-time stories for their children before sleep.=Parents are wise to read bed-time stories for their children before sleep.父母亲睡前给孩子讲故事是非常智慧的 行为1） 此句型中的形 容词还有很 多，如： exciting,happy, surprising,terrible, common, clear, natural, important 等2） 当形容词是描 述人的性质， 品行，性格时， 用of sb.如： nice， kind, right, wrong, clever, stupid, careful, careless 等。

7. It is worthwhile to do/doing sth.某事值得 做例：It is worthwhile to read /reading Dickens' books.1) worth后面主动 形式表被动Sth ・ is worth doing.=Sth・ is worthy of being done / to be done.=Dickens' books are worth reading* =Dickens' books are worthy of being read/ to be read.狄更斯的书籍值得一读2)worthy 后接 to be done 或 being done8・ It is no use/ no good doing sth.做某事无益/ 不好例：It is no use arguing with him. 和他争吵没用例：It is no good worrying about it. 没必要担心此事9. It is + 过去分词(said/reported /announced/believed/ acknowledged/expected/ supposed/known) +that cl・据说/据报道 /据宣布大家公认/预 料/设想/知 道……例：It is said that this flu is caused by a special virus.=This flu is said to be caused by a special virus.这种流感据说是由一种特殊的病毒引起 的。

该句型可变化为sb./sth. is said/reported /announced /believed /expected/ supposed/known to do (不定式根据具 体表达而变化)10.It counts/matters much that cl・It doesn't matter whether sb・ do sth・or not・……很重要/有关系例：It counts/matters a lot that you can leave a good impression in your first interview.初次面试留下好印象十分重要11・It happened/chanced that cl・= Sb. happened/chanced to do sth.碰巧某人做 某事…例：It happened/chanced that I was out when he came.=I happened/chanced to be out when he came.他来的时候我碰巧出去了12・It occurs/comes to sb・ that cl.It turns out that cl.某人突然想 到…；最终证明…例：It occurred to me that I should have a try.我突然感到自己应该试一试。

有时人们也说An idea occured/ came to me that I should have a try.B・It用法第一类：It充当句子的形式宾语，代指不定式to do及that从句13・Sb. feel / think / consider / find / /believe/suppose it +adj./n.+ to do / that cl・某人认为做 某事怎样例： We consider it a great honor that our country can hold the World Expo.=We consider it a great honor for our country to hold the World Expo.我们认为在自己的国家举办世博会是一种荣誉14・Sb. take it for granted to dosth・/thatcl・某人认为某 事理所当然例： We shouldn't take it for granted that parents should do everything for us.我们不要理所当然认为父母亲该为我们做一切事情。

15.Sb./Sth. make it+adj./n.+ todo / that cl・某人/某事 使…怎样例:Our school makes it a rule to wear school uniforms at school. 学校规定必须穿校服上学16. Sb. see to it that+cl.保证，确保例：Please see to it that kid must be away from fire.17.Sb. depend/rely on it that+cl・相信……例： You can depend on it that we won't miss this party.18・Sb. like/hate/dislike itthat/when+cl.Sb.appreciate it if/when+cl.I dislike it when you whistle.我不爱听你吹口哨We really appreciate it when she offered to help. 她来帮忙 了，我们十分感激能用于此结构的 动词不多，常见的 还有 enjoy, love, prefer 等。

It用法第三类：It在指代时间意义时引导的特定句型19. It is/was high time for sb. to do sth・/that cl.某人该做某 事了例：It is time to begin our discussion.=It is time that we should begin/began our discussion.我们讨论的时间到了that从句用一般 过去式或should do,属于虚拟语气 表达，其中should 不省20. It takes sb. + 时间段+ to dosth.=It takes +时间段+for sb. to dosth.某人花多少 时间做某事例：Usually it will take us about one week to get used to a new teacher's teaching. =Usually it will take about one week for us to get used to a new teacher's teaching. 通常需要大约一个星期我们才能适应新 老师的教学该句型也可改为：Sb. spend time (in) doing sth./ on sth.故我们可以说：We usually spend about one week getting used to a new teacher'steaching.21. It was/will be took/will take+时间段+ before ...过多久… 才…例: It。