在英语语法中，名词性从句是一个重要的知识点，它涵盖了主语从句、宾语从句、表语从句和同位语从句等类型。为了帮助大家更好地掌握这一知识点，以下整理了100道关于名词性从句的练习题，并附有详细答案解析。
一、单项选择题（共50题）
1. The question is whether we should start the project now or wait for better conditions.
- A. that
- B. which
- C. if
- D. whether
答案：D
2. It is certain that he will come tomorrow.
- A. what
- B. that
- C. when
- D. where
答案：B
3. She told me that she would visit me next week.
- A. who
- B. what
- C. that
- D. which
答案：C
4. The news that he has won the prize spread quickly.
- A. what
- B. which
- C. that
- D. why
答案：C
5. It is not clear whether the meeting will be held on time.
- A. if
- B. whether
- C. that
- D. which
答案：B
二、填空题（共30题）
6. The fact ________ he is a doctor is well-known.
7. I don't know ________ they will arrive today.
8. It is important ________ you understand this concept.
9. The reason ________ he was late was that he missed the bus.
10. She asked me ________ I had finished my homework.
...
三、改错题（共20题）
21. The problem is how can we solve it in such a short time.
22. He didn't tell us that if he would come to the party.
23. It is necessary what we need to do this immediately.
24. The idea that he expressed at the meeting was very interesting.
...
以上仅为部分练习题展示，完整版题目及答案解析请参考附件或相关学习资料。通过这些练习，相信大家可以更深入地理解名词性从句的用法和特点。希望每位学习者都能在实践中不断进步！
