Education

Nghĩa tiếng Việt:

🔹 1. MẠO TỪ BẤT ĐỊNH: A / AN

📌 Cách dùng:

• Dùng “a” trước danh từ đếm được số ít bắt đầu bằng âm phụ âm.
• Dùng “an” trước danh từ đếm được số ít bắt đầu bằng âm nguyên âm (a, e, i, o, u).

📍 Khi nào dùng a/an?

• Khi nhắc đến lần đầu tiên một người, vật, hoặc sự việc.
• Khi danh từ không xác định cụ thể.
• Khi nói về một nghề nghiệp.

✅ Ví dụ:

• I saw a dog in the park. (một con chó – không biết con nào cụ thể)
• She is an artist. (nghề nghiệp)
• He bought a book and an umbrella. (book: âm phụ âm; umbrella: âm nguyên âm)

🔹 2. MẠO TỪ XÁC ĐỊNH: THE

📌 Cách dùng:

• Dùng khi người nghe và người nói đều biết rõ người, vật hoặc sự việc đang được nói tới.
• Khi danh từ đã được nhắc đến trước đó.
• Trước những danh từ duy nhất (the sun, the moon…).
• Trước các tên sông, đại dương, dãy núi, quốc gia có từ “of” hoặc “kingdom”, “states”…
• Trước nhạc cụ và họ người (the guitar, the Smiths…)

✅ Ví dụ:

• I saw a dog. The dog was very friendly. (nhắc lại lần 2, đã xác định)
• The sun is shining.
• She put the book on the table.

🔸 3. KHÔNG DÙNG MẠO TỪ (Ø)

📌 Khi nào không dùng mạo từ?

• Trước danh từ số nhiều hoặc không đếm được khi nói chung chung.
• Trước tên riêng, ngôn ngữ, môn học.
• Sau các động từ như go to school, go to bed, go to church (khi nói đến mục đích chính).

✅ Ví dụ:

• Books are expensive these days. (không dùng the vì nói chung về books)
• She studies English and physics. (môn học)
• He goes to school every day. (mục đích chính là học)

⚠️ LƯU Ý THƯỜNG GẶP:

🌟 PHẦN 1: Điền mạo từ a / an / the vào chỗ trống nếu cần. Nếu không cần, để trống.

1. She is ___ pupil in ___ primary school.
2. I have ___ essay to write for tomorrow.
3. He borrowed ___ dictionary from the library.
4. We visited ___ laboratory to do the experiment.
5. She is studying to be ___ instructor in mathematics.
6. I need ___ ruler and ___ pencil case.
7. The students were given ___ assignment on biology.
8. He received ___ diploma after finishing the course.
9. I bought ___ book about computer technology.
10. There is ___ notice board next to the classroom door.
11. He wants to become ___ teacher at ___ university.
12. I left my homework on ___ desk near the window.
13. We had ___ test in chemistry yesterday.
14. That’s ___ interesting subject!
15. I want to borrow ___ novel from the school library.
16. ___ bell rang and the break ended.
17. My sister is ___ coach for the drama club.
18. Have you seen ___ mark on your essay?
19. She gave us ___ very difficult task.
20. They wrote ___ composition about their holidays.

🌟 PHẦN 2: Chọn mạo từ đúng để hoàn thành câu.

1. He gave me ___ useful dictionary.
   A. a B. an C. the D. (no article)
2. We spent an hour in ___ library.
   A. a B. an C. the D. (no article)
3. They want to build ___ new science lab.
   A. the B. a C. an D. (no article)
4. I think she wants to become ___ artist.
   A. the B. a C. an D. (no article)
5. He left his homework on ___ table.
   A. a B. an C. the D. (no article)
6. There is ___ economics class today.
   A. a B. an C. the D. (no article)
7. Have you ever used ___ microscope in science class?
   A. the B. an C. a D. (no article)
8. I need ___ eraser to fix this.
   A. a B. an C. the D. (no article)
9. We have ___ break at 10:30.
   A. a B. the C. an D. (no article)
10. He wrote ___ essay about climate change.
    A. an B. the C. a D. (no article)
11. I’m reading ___ article on educational reform.
    A. an B. a C. the D. (no article)
12. Let’s go to ___ class early today.
    A. the B. a C. an D. (no article)
13. I lost ___ note I wrote yesterday.
    A. a B. the C. an D. (no article)
14. They played ___ song in music class.
    A. the B. a C. an D. (no article)
15. That’s ___ excellent handwriting.
    A. a B. an C. the D. (no article)
16. ___ bell has already rung.
    A. The B. A C. An D. (no article)
17. He’s reading ___ book on photography.
    A. the B. a C. an D. (no article)
18. Do we have ___ homework today?
    A. a B. the C. an D. (no article)
19. I’m taking ___ IT course next semester.
    A. an B. the C. a D. (no article)
20. She wants to become ___ college lecturer.
    A. an B. the C. a D. (no article)

🌟 PHẦN 3: Viết lại câu, thêm mạo từ đúng (a/an/the) nếu cần.

1. She is reading book on science.
2. We went to library after school.
3. He bought pencil case and rubber.
4. I received diploma in music.
5. They built laboratory near the classroom.
6. Bell rang loudly.
7. She needs ruler to draw line.
8. I gave essay to teacher.
9. Homework was very hard.
10. He used computer to write assignment.
11. Student forgot to bring dictionary.
12. He found note on floor.
13. We listened to music in class.
14. She is good instructor.
15. I want to join drama club.
16. There was error in composition.
17. He wrote letter to principal.
18. We have lesson on history today.
19. I saw mark on test paper.
20. Teacher explained topic again.

🌟 PHẦN 4: Điền mạo từ đúng vào đoạn văn.

Đọc đoạn sau và điền a / an / the / – vào chỗ trống:

Yesterday, I attended (1) ___ class on chemistry. It was held in (2) ___ large classroom at (3) ___ college downtown. After (4) ___ lesson, I visited (5) ___ library to do some research. I found (6) ___ interesting article on (7) ___ history of education. I also borrowed (8) ___ book about biology and (9) ___ dictionary. On my way out, I spoke with (10) ___ instructor who taught (11) ___ class. She recommended (12) ___ course on advanced mathematics. I plan to register for it next week.

(Tiếp tục thêm 8 câu nữa…)

13. I also saw ___ announcement on the notice board.
14. It was about ___ project on nature studies.
15. ___ project will be led by Dr. Smith.
16. He is ___ expert in environmental education.
17. The meeting will take place in ___ lab at 3 p.m.
18. I will prepare ___ presentation with my team.
19. We plan to include ___ research on pollution.
20. I need to bring ___ USB stick for saving the files.

🌟 PHẦN 5: Sửa lỗi trong các câu sau (về mạo từ).

1. I have an homework to do.
2. She read the article in a library.
3. He wants to be an teacher.
4. They bought the eraser from supermarket.
5. We studied a economics today.
6. He gave me the interesting pencil case.
7. She works in an school near the park.
8. My friend wrote a essay for the class.
9. There is an student waiting outside.
10. I used a ink pen for the first time.
11. The bell rang after a long break.
12. He visited an university in the city.
13. They watched the drama in a theater.
14. She took a test in the classroom.
15. He wants to become the artist.
16. We have the homework to finish.
17. A chemistry is my favorite subject.
18. They painted an blackboard on the wall.
19. I have an good idea for the project.
20. The rubber is in an box.