Mệnh đề danh từ là một loại mệnh đề phụ dùng để thay thế cho một danh từ trong câu. Chúng có thể đóng vai trò như chủ ngữ, tân ngữ hoặc bổ ngữ cho động từ chính. Trong tiếng Anh, mệnh đề danh từ thường được bắt đầu bằng các từ như “that”, “whether”, “if”, và các từ nghi vấn như “who”, “what”, “where”, “when”, “why”, và “how”.

Cách sử dụng mệnh đề danh từ trong câu phức tạp:

1. Chủ ngữ của câu:
   • Cấu trúc: That + mệnh đề
   • Ví dụ: That she will attend the meeting is not clear.
     • (Việc cô ấy có tham dự cuộc họp hay không thì chưa rõ.)
   • Ví dụ khác: What he said was surprising.
     • (Những gì anh ấy nói thật bất ngờ.)
2. Tân ngữ của động từ:
   • Cấu trúc: Verb + (that) + mệnh đề
   • Ví dụ: I believe (that) the project will succeed.
     • (Tôi tin rằng dự án sẽ thành công.)
   • Ví dụ khác: She asked whether the report was ready.
     • (Cô ấy hỏi liệu báo cáo đã sẵn sàng chưa.)
3. Bổ ngữ cho danh từ:
   • Cấu trúc: Noun + (that) + mệnh đề
   • Ví dụ: The fact (that) he won the award is amazing.
     • (Việc anh ấy giành giải thưởng thật đáng kinh ngạc.)
   • Ví dụ khác: My concern is whether we have enough resources.
     • (Mối quan tâm của tôi là liệu chúng ta có đủ tài nguyên không.)

Các mệnh đề danh từ phổ biến:

1. Mệnh đề danh từ với “that”:
   • Cấu trúc: Noun + that + mệnh đề
   • Ví dụ: The news that she got the job was exciting.
     • (Tin tức rằng cô ấy đã nhận được công việc thật thú vị.)
2. Mệnh đề danh từ với “whether”:
   • Cấu trúc: Verb + whether + mệnh đề
   • Ví dụ: I am not sure whether he will come.
     • (Tôi không chắc liệu anh ấy có đến không.)
3. Mệnh đề danh từ với “if”:
   • Cấu trúc: Verb + if + mệnh đề
   • Ví dụ: She wondered if the decision was final.
     • (Cô ấy tự hỏi liệu quyết định đã là cuối cùng chưa.)
4. Mệnh đề danh từ với các từ nghi vấn (who, what, where, when, why, how):
   • Cấu trúc: Wh-word + mệnh đề
   • Ví dụ: I don’t know what he wants.
     • (Tôi không biết anh ấy muốn gì.)
   • Ví dụ khác: She asked where the meeting would be held.
     • (Cô ấy hỏi cuộc họp sẽ được tổ chức ở đâu.)

• Mệnh đề danh từ có thể làm chủ ngữ, tân ngữ, hoặc bổ ngữ trong câu.
• Từ bắt đầu mệnh đề bao gồm “that”, “whether”, “if”, và các từ nghi vấn như “who”, “what”, “where”, “when”, “why”, và “how”.
• Mệnh đề danh từ giúp mở rộng thông tin trong câu và làm cho câu phức tạp hơn.

Bài tập

1. I didn’t know ______ he would come to the party.
2. What bothers me is ______ they haven’t called yet.
3. She asked ______ the project was completed on time.
4. The question is ______ we can finish the task by next week.
5. I’m not sure ______ he has completed the assignment.
6. The fact ______ he won the competition surprised everyone.
7. Please let me know ______ you are available for the meeting.
8. The teacher explained ______ the homework was due on Friday.
9. What I need is ______ you help me with this report.
10. It’s unclear ______ the company will launch the new product.
11. I wonder ______ they will attend the seminar.
12. The problem is ______ they don’t have enough resources.
13. Can you tell me ______ the conference is going to be held?
14. The news ______ she got the promotion was exciting.
15. The issue is ______ we have enough time to finish the project.
16. I didn’t realize ______ she was the manager.
17. What surprised me was ______ they knew about the surprise party.
18. I wonder ______ the team will meet the deadline.
19. The question is ______ he will accept the offer.
20. It’s uncertain ______ they will approve the budget.
21. The teacher was pleased with ______ the students completed the project.
22. He asked ______ the decision was final.
23. I am concerned about ______ we have sufficient data for the analysis.
24. The fact ______ the meeting was canceled was disappointing.
25. What they want is ______ you give a presentation.
26. The problem is ______ the system crashed during the presentation.
27. I’m not sure ______ she can attend the conference.
28. The issue is ______ they have not yet submitted their reports.
29. Can you confirm ______ the documents have been reviewed?
30. The news ______ he is leaving the company was unexpected.
31. I am worried about ______ the new policy will affect our department.
32. What I want to know is ______ they have finished the training.
33. The question is ______ we need to revise the proposal.
34. The problem is ______ they forgot to send the invitations.
35. I wonder ______ the project will be completed before the deadline.
36. The issue is ______ we have enough manpower for the task.
37. Can you tell me ______ she will be available for the meeting?
38. The fact ______ he is not coming to the event is disappointing.
39. I’m curious ______ the results of the experiment.
40. The question is ______ we will have enough time to prepare.
41. What surprised me was ______ they had already made the decision.
42. The news ______ the company is expanding was exciting.
43. I am concerned about ______ the team has met its targets.
44. The problem is ______ the report was not submitted on time.
45. The issue is ______ we need to get approval before moving forward.
46. I need to know ______ the new procedures will be implemented.
47. The fact ______ she missed the deadline is troubling.
48. Can you tell me ______ they have finalized the schedule?
49. The question is ______ we will have enough funds for the project.
50. I wonder ______ the new software will improve productivity.
51. The news ______ he got the promotion was well-received.
52. The issue is ______ they have not yet responded to the request.
53. What concerns me is ______ we haven’t received the shipment.
54. The problem is ______ they are still negotiating the terms.
55. I am not sure ______ the team is ready for the presentation.
56. The fact ______ the project was completed early was impressive.
57. The question is ______ we will be able to meet the deadline.
58. Can you tell me ______ the meeting has been scheduled?
59. The issue is ______ we need to revise the plan before presenting it.
60. I am curious ______ the budget will be approved.
61. The problem is ______ the data was not accurate.
62. What I need to know is ______ the training will be provided.
63. The question is ______ they will agree to the new terms.
64. I wonder ______ the company will achieve its goals.
65. The news ______ the merger was finalized was exciting.
66. The issue is ______ we don’t have a backup plan.
67. Can you confirm ______ the contract has been signed?
68. The problem is ______ we lack sufficient evidence for the case.
69. The fact ______ the new system is working well is reassuring.
70. What I want to know is ______ the report will be completed on time.
71. The question is ______ we have the resources to support the project.
72. I am concerned about ______ they will be able to deliver on time.
73. The issue is ______ they forgot to include important details.
74. Can you tell me ______ the team will start the project?
75. The news ______ the company is launching a new product is exciting.
76. I wonder ______ the changes will improve efficiency.
77. The problem is ______ we haven’t received the necessary approvals.
78. What surprised me was ______ they managed to resolve the issue quickly.
79. The question is ______ the proposal will be accepted.
80. The issue is ______ they have not completed the initial phase.
81. Can you tell me ______ they will be attending the workshop?
82. The fact ______ they are investing in new technology is promising.
83. The news ______ he was promoted to manager was well-received.
84. What I need is ______ you update me on the project status.
85. The question is ______ the new policy will affect employee morale.
86. The issue is ______ we don’t have enough information yet.
87. I am curious ______ the results of the survey.
88. The problem is ______ the system is not functioning correctly.
89. The fact ______ they have met their targets is encouraging.
90. Can you tell me ______ the budget will be approved soon?
91. The question is ______ the team will meet the project goals.
92. The issue is ______ we are facing delays in the production process.
93. What I want to know is ______ the marketing campaign was successful.
94. The fact ______ they managed to finish early is impressive.
95. The problem is ______ they are still finalizing the details.
96. Can you tell me ______ the final report will be submitted?
97. The news ______ the new office is opening soon is exciting.
98. I wonder ______ the changes will lead to better results.
99. The question is ______ we will be able to deliver the project on time.
100. The issue is ______ we have not yet received the client’s feedback.

Đáp án

1. if
2. that
3. whether
4. if
5. whether
6. that
7. whether
8. that
9. that
10. whether
11. if
12. that
13. where
14. that
15. if
16. that
17. that
18. whether
19. if
20. whether
21. that
22. whether
23. whether
24. that
25. that
26. that
27. whether
28. that
29. whether
30. that
31. whether
32. whether
33. whether
34. that
35. whether
36. whether
37. whether
38. that
39. what
40. whether
41. that
42. that
43. whether
44. that
45. whether
46. whether
47. that
48. whether
49. whether
50. whether
51. that
52. that
53. that
54. that
55. whether
56. that
57. whether
58. whether
59. whether
60. whether
61. that
62. whether
63. whether
64. whether
65. that
66. that
67. whether
68. that
69. that
70. whether
71. whether
72. whether
73. that
74. when
75. that
76. whether
77. that
78. that
79. whether
80. that
81. whether
82. that
83. that
84. that
85. whether
86. whether
87. what
88. that
89. that
90. whether
91. whether
92. that
93. whether
94. that
95. that
96. when
97. that
98. whether
99. whether
100. whether