在初中英语学习中，名词性从句是一个重要的语法知识点。它不仅涉及句子结构的多样性，还对学生的理解与表达能力有较高要求。为了帮助学生更好地掌握这一部分知识，下面整理了30道关于名词性从句的判断练习题，题目紧扣2025年人教版初一英语教材内容，适合课后巩固与自我检测。

一、名词性从句简介

名词性从句是指在句子中充当主语、宾语、表语或同位语的从句。常见的引导词包括：that, whether, if, what, who, whom, whose, when, where, why, how 等。这类从句通常由连接词引导，并且在句子中起到名词的作用。

二、练习题（共30题）

请判断下列句子中划线部分是否为名词性从句，是则打“√”，否则打“×”。

1. I don’t know what he said.

2. She asked if I was coming.

3. The problem is how we can solve it.

4. He told me that he was tired.

5. Whether he will come is still unknown.

6. I believe that she is honest.

7. Do you know where the library is?

8. The question is who broke the window.

9. What he needs is a good rest.

10. I wonder why she left.

11. They are discussing whether to go or not.

12. This is what I want.

13. Please tell me when the meeting starts.

14. How he passed the exam is a mystery.

15. She didn’t say that she was sorry.

16. Whoever comes first will get the prize.

17. I don’t understand why he refused.

18. The teacher explained how to use the computer.

19. Where we met is a secret.

20. He asked if I had finished my homework.

21. What you said made me happy.

22. I’m not sure whether it will rain.

23. When the class begins is important.

24. She knows how to cook.

25. The reason is why he was late.

26. Whoever wins will be praised.

27. He didn’t know where she went.

28. That he is right is obvious.

29. I asked if you could help me.

30. Why he didn’t call is unclear.

三、答案参考

1. √

2. √

3. √

4. √

5. √

6. √

7. √

8. √

9. √

10. √

11. √

12. √

13. √

14. √

15. ×（“that”引导的是宾语从句，但这里不是名词性从句）

16. ×（“whoever”引导的是让步状语从句）

17. √

18. √

19. √

20. √

21. √

22. √

23. √

24. √

25. √

26. ×（“whoever”引导的是让步状语从句）

27. √

28. √

29. √

30. √

四、总结

通过这30道练习题，学生可以系统地复习和巩固名词性从句的相关知识。建议在做题过程中注意以下几点：

- 区分名词性从句与其他从句（如定语从句、状语从句）的区别；

- 注意从句的引导词及其在句中的成分；

- 多读多练，逐步提高对复杂句子的理解能力。

希望这份练习题能帮助你更好地掌握2025年人教版初一英语中的名词性从句内容！