在英语学习过程中，强调句型是一个非常重要的语法知识点，尤其在口语和写作中，正确使用强调句能够有效突出句子中的重点信息，使表达更加清晰、有力。本文将围绕“强调句型”展开，提供一套包含40道练习题及其详细解析的资料，帮助学习者更好地掌握这一语法结构。

一、什么是强调句型？

强调句型是英语中用来突出某个特定成分（如主语、宾语、状语等）的一种句式结构。常见的强调句型为：

It is/was + 被强调部分 + that/who + 其他成分

例如：

- It was John who broke the window.（是约翰打破了窗户。）

- It is in the library that I met her.（就是在图书馆我遇见了她。）

二、强调句型的常见结构

1. It is/was + 主语 + that + 其他成分

- It is the teacher who taught us English.

- It was yesterday that we had the meeting.

2. It is/was + 宾语 + that + 其他成分

- It is my book that you are reading.

- It was the letter that she received last week.

3. It is/was + 状语 + that + 其他成分

- It is here that I live.

- It was at noon that the event took place.

4. It is/was + 表语 + that + 其他成分

- It is a good idea that we should go there.

- It was his mistake that caused the problem.

三、强调句型的判断方法

要判断一个句子是否为强调句型，可以尝试将“it is/was...that...”结构去掉，看剩下的部分是否仍能构成完整句子。如果可以，则说明原句是强调句型；否则不是。

例如：

- 原句：It is the man that helped me.

- 去掉后：The man helped me. → 句子成立，是强调句型。

再如：

- 原句：He is the one who called me.

- 去掉后：He called me. → 不是强调句型。

四、练习题（40题）

以下为40道关于强调句型的练习题，每道题后附有参考答案与解析，供学习者巩固知识。

练习题1-10

1. _______ is the manager who will attend the meeting.

A. He

B. It

C. That

D. This

2. It was in the park _______ they first met.

A. where

B. that

C. which

D. when

3. _______ is the new student from Canada.

A. It

B. He

C. That

D. This

4. It was the teacher _______ gave me the advice.

A. who

B. that

C. whom

D. which

5. _______ is the reason why he left early.

A. That

B. It

C. This

D. Which

6. It was not until 2010 _______ he started his business.

A. when

B. that

C. which

D. where

7. _______ is the book that I borrowed from the library.

A. That

B. It

C. This

D. These

8. It was the children _______ were playing in the garden.

A. who

B. that

C. which

D. whom

9. _______ is the person who can help you.

A. That

B. It

C. This

D. These

10. It was on Monday _______ the accident happened.

A. when

B. that

C. which

D. where

练习题11-20

11. It was the second time _______ he had made such a mistake.

A. that

B. when

C. which

D. where

12. _______ is the boy who won the prize.

A. That

B. It

C. This

D. These

13. It was the doctor _______ treated the patient.

A. who

B. that

C. which

D. whom

14. _______ is the reason for the delay.

A. That

B. It

C. This

D. Which

15. It was in the classroom _______ the teacher found the missing paper.

A. where

B. that

C. which

D. when

16. _______ is the woman who works in the hospital.

A. That

B. It

C. This

D. These

17. It was not until the end of the day _______ he realized his mistake.

A. when

B. that

C. which

D. where

18. _______ is the key to solving the problem.

A. That

B. It

C. This

D. These

19. It was the students _______ asked the question.

A. who

B. that

C. which

D. whom

20. _______ is the place where we met last year.

A. That

B. It

C. This

D. These

练习题21-30

21. It was the only chance _______ we had.

A. that

B. which

C. when

D. where

22. _______ is the man who saved the child.

A. That

B. It

C. This

D. These

23. It was the moment _______ everything changed.

A. when

B. that

C. which

D. where

24. _______ is the book that I read last week.

A. That

B. It

C. This

D. These

25. It was the teacher _______ gave us the homework.

A. who

B. that

C. which

D. whom

26. _______ is the reason why he failed the exam.

A. That

B. It

C. This

D. Which

27. It was in the evening _______ the meeting ended.

A. when

B. that

C. which

D. where

28. _______ is the girl who passed the test.

A. That

B. It

C. This

D. These

29. It was the first time _______ I saw her.

A. that

B. when

C. which

D. where

30. _______ is the house where he grew up.

A. That

B. It

C. This

D. These

练习题31-40

31. It was the only way _______ we could solve the problem.

A. that

B. which

C. when

D. where

32. _______ is the person who called me this morning.

A. That

B. It

C. This

D. These

33. It was the day _______ the project was completed.

A. when

B. that

C. which

D. where

34. _______ is the answer that you were looking for.

A. That

B. It

C. This

D. These

35. It was the reason _______ he left the company.

A. that

B. which

C. when

D. where

36. _______ is the place where we should meet.

A. That

B. It

C. This

D. These

37. It was the first time _______ I felt so nervous.

A. that

B. when

C. which

D. where

38. _______ is the book that I want to buy.

A. That

B. It

C. This

D. These

39. It was the moment _______ the decision was made.

A. when

B. that

C. which

D. where

40. _______ is the person who helped me with the work.

A. That

B. It

C. This

D. These

五、参考答案与解析（简略版）

1. B

2. B

3. B

4. A

5. B

6. B

7. B

8. A

9. B

10. B

11. A

12. B

13. A

14. B

15. A

16. B

17. B

18. B

19. A

20. B

21. A

22. B

23. A

24. B

25. A

26. B

27. B

28. B

29. A

30. B

31. A

32. B

33. A

34. B

35. A

36. B

37. A

38. B

39. A

40. B

通过以上练习，希望同学们能够更熟练地掌握强调句型的用法，并在实际交流中灵活运用。如需更多练习或深入讲解，欢迎继续关注！