语法图解
探究发现
①My feeling is that they're going to be big one day.
②But the big surprise of the evening was when I was elected prom queen!
③China is no longer what it used to be.
④The reason why I'm calling you is that I want to invite you to my birthday party.
⑤That she has became an artist may have been due to her father's influence.
⑥What we should do next remains unknown.
⑦Whether it will do us harm remains to be seen.
⑧It's a good thing that the exams are finished.
[我的发现]
(1)以上句中，①～④句中黑体部分均引导表语从句，而⑤～⑧句中黑体部分则引导主语从句。
(2)由④句可知，主语为名词reason时，表语从句中的连接词要用that，而不用why。
(3)由⑤⑥句知，引导主语从句时，what要在从句中充当句子成分，而that不作任何成分，只在语法上起连接作用。
(4)⑧句中，it用作形式主语，代替that引导的主语从句。
