＋that从句

　　It is said that another shopping mall will be built in our city.

　　据说我们城市将再建一座大型购物中心。

　　(4)It seems/happens/appears/turns out/occurs等不及物动词或短语＋that从句

　　It seems that Alice is not coming to the party at all.

　　艾丽丝似乎根本不会来参加晚会。

　　It turned out that nobody remembered the address.

　　结果是无人记得那个地址。

　　It happened that I saw him yesterday.

　　碰巧我昨天看见他了。

　　(5)It doesn't matter(makes no difference, etc)＋连接代词或连接副词引导的主语从句

　　It makes no difference where we shall have the meeting.

　　我们在哪里开会毫无区别。

　　It doesn't matter whether she will come or not.

　　她是否要来没有关系。

　　3．主语从句易混点辨析

　　(1)that与what

　　①that引导主语从句时，不作任何句子成分，只起连接作用。多数情况下，that引导的主语从句常放于句末，用it作形式主语。

　　②what引导主语从句时，在句中作主语、宾语、表语和定语。

　　That she survived the accident is a miracle.

　　她在事故中幸免于难简直是奇迹。

　　What you need is more practice.

　　你所需要的是更多的练习。

　　(2)who与whoever

　　①who引导的从句的内容带有疑问性。

　　②whoever则表示泛指，相当于anyone who。

　　Who will give us a speech is unknown now.

　　谁将向我们发表演讲现在还不知道。

Whoever wins the prize may get the car.