1、It takes sb. sth.某物花費某人……
2、sth. take sb. sth某物花費某人……
3、it takes sb.十時間/金錢等 to do sth.
某物花費了某人…時間/金錢做某事。
It 句型常用結構“It is adj.n to do……”
1) It is advisable to exercise(擁有) patience in dealing with such complicated situations.
遇到這類複雜的情況，明智的做法是要有耐性。
這句裏，It代指“to exercise(擁有) patience”，後面的“in……”作狀語，為“在……中”
以下同理(紅色字體為主語部分，也就是it代指內容)
2) It is advisable to place important telephone numbers next to the phone in case of an emergency.建議把重要的電話號碼放在電話機旁，以備出現緊急情況。
3) It is biologically reasonable for deer to reduce their cost of living to increase their chances of surviving in winter.為了提高冬季存活的概率，鹿必須明智的從生理上減少生存成本
此外，it iswas……that也是高頻句式
4) It is essential that the increase in production should be geared to (適應) the increase in public demand.生產量的提高必須和大眾的需求相適應。
此句中，it代指的即為that後面成分，這種句式被稱為“主語從句”。再如下面三句：
5) It is necessary that young and old people should communicate more with each other.
年輕人和老人應該多多溝通是很有必要的。
6) It is incredible(不可思議) that he ate the big cake just in two bites.不可思議的是，他兩口就解決了那個大蛋糕
7) It is certain that fresh air and exercises are more valuable than medicine.
新鮮的空氣和鍛鍊比藥更有用
試着學習這些句子吧!
8) It is certain that with determination and hard work you will succeed eventually.
下定決心，努力工作，你肯定會成功。
9) It is easy to fall into bad habits but very difficult to break away form them.
養成壞習慣很容易，而擺脱卻很難。
10 It was not until about 1600B.C. when the chariot (馬拉戰車) was invented that the maximum speed was raised to roughly twenty miles per hour.直到公元前1600年，馬拉戰車才被髮明出來，最高速度提升到大概每小時20英里。
11) It was in times of crisis that I finally found out what he was really like.
就是在危難時刻，我才終於發現他到底是個什麼樣的人。
12) It takes (took) sb. some time to do sth.
某人花費多長時間去做某事
13) It can be argued that such a response may not mean much (有人認為……)
14) It is reported that the electronic industry is going on rapidly in recent year.
15) It pays in the long run (從長遠的角度看……) to introduce new technique
16) It has been only twenty-five years since television came to one of people‘s pastimes.
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