It + be + 过去分词 + that…

　　It is reported that…

　　It is said that…

　　It is believed that…

　　It is generally thought that…

　　It should be noted that …。

　　It has been found that …

　　It must be pointed out that…

　　造句：

　　1) 据报道，这个超级巨星有成百万的疯狂粉丝。

　　2) 必须指出的是，养宠物可以培养孩子的责任心。

　　3) 人们相信，中国会在这次经济危机中变得日益强大。

　　4) 人们普遍认为，韩国影星Rain还是挺帅的。

　　写作实战：把下列句子改写成it作主语的句子——

　　1) That the world is round is a fact。

　　2) That smoking can cause cancer is true。

　　3) That English is becoming an international language is true。

　　4) That Mike failed his English exam was strange。

　　5) That he has been late for work over and over again is a serious matter。

　　3 定语从句

　　定语从句的两个关键概念——先行词、关系词。

　　案例：God helps those who help themselves。

　　原则一：先行词指人用who/whom

　　1) I am talking about friends who care deeply about each other, who support each other, who make life worth living. I am talking about friends who you can share almost everything with。

　　2) He who is not handsome at twenty, nor strong at thirty, nor rich at forty, nor wise at fifty, will never be handsome, strong, rich, or wise。

　　3) There is this difference between happiness and wisdom: the person who thinks himself the happiest man really is so; but the person who thinks himself the wisest is generally the greatest fool。

　　4) The world is a book, and those who do not travel read only one page。

　　原则二：表示人或物的所有关系用whose

　　1) I know a friend whose brother is the CEO of IBM。

　　2) It was a meeting whose importance I did not realize at the time。

　　3) Anger is a wind which blows out the lamp of the mind. 

　　4) He likes climbing mountains, which is a good exercise。

　　原则三：当先行词既是有人又有物时用that

　　The writer and his novels that the article deals with are quite familiar to us. 

　　原则四：先行词指时间用when

　　I will never forget the day when I met you。

　　We will put off the outing until next week, when we won’t be so busy。

　　March 10, 1876 was the day when the first complete sentence was sent over a telephone。

　　原则五：先行词指地点where

　　This is the town where I spent my childhood。

　　写作实战：经典的定语从句

　　1、God helps those who help themselves。

　　天助自助者。

　　2、A book that is shut is but a block。

　　不去翻动的书本不过是一块砖头。

　　3、Success is a process that begins from within。

　　成功是一个开始内心的过程。

　　4、You must do the thing which you suppose you cannot do。

　　你一定要去做自己认为做不到的事情。

　　5、A soldier who does not want to be a marshal is not a good soldier。