1. 是存在的。
2. 这是因为高一阶段的英语学习中，主语从句是一种常见的语法结构，用于引导复合句中的主语部分，使句子更加丰富和复杂。
3. 以下是一个What he said in the meeting surprised everyone.（他在会议上说的话让大家都感到惊讶。
）这个例句中，主语从句"What he said in the meeting"作为整个句子的主语，起到了进一步说明和补充的作用。
高一的主语从句例句
主语从句： 1. What he wants to tell us is not clear. 他要跟我们说什么，还不清楚。
2. Who will win the match is still unknown. 谁能赢得这场比赛还不得而知。
3. It is known to us how he became a writer. 我们都知道他是如何成为一名作家的。
4. Where the English evening will be held has not yet been announced. 英语晚会将在哪里举行，还没有宣布。
5. It's a great pity（that）they didn't get married. 他们没能结婚，真是令人惋惜。
6. It's splendid that you passed your exam. 你通过考试了，真棒。
7. I'm afraid that I can't come till next week. 恐怕我下星期才能来。 宾语从句： 8. He has told me that he will go to Shanghai tomorrow. 他已经告诉我他明天要去上海。
9. We must never think (that) we are good in everything while others are good in nothing. 我们决不能认为自己什么都好，别人什么都不好。
10. I want to know what he has told you. 我想知道他告诉了你什么。 11. She always thinks of how she can work well. 她总是在想怎样能把工作做好。
12. She will give whoever needs help a warm support. 凡需要帮助的人，她都会给予热情的支持。
13. His father is worried about whether he lose his work. 他的父亲担心他是否会失去工作。
14. I'm thinking about whether I should quit my present job. 我正在考虑我是否应该