1. The description of the product was very detailed and informative.
2. It's important for children to learn to get on with each other.
3. He spoke English naturally after he lived in England for several months.
4. The teacher often emphasizes the importance of studying for the test.
5. Environmental concerns are becoming increasingly important in today's world.
6. When you finish doing the crossword, the solution is on the back page.
7. She trained very hard to beat her competitor in the race.
8. Her skirt was beautifully patterned with flowers and leaves.
9. The destruction of the rainforest is a big problem.
10. My friend, John, is very adventurous and loves to try new things.
11. Many countries are still developing their economies.
12. We must act responsibly and take responsibility for our actions.
13. Tet is one of the most important celebrations for Vietnamese people.
14. The teacher's inspirational words left a lasting impact on her students.
15. We can help save natural resources by collecting used things like paper and cans.
16. Peter's reading and writing skills are excellent.
17. The basketball team participated in the match very actively yesterday.
18. One ton of recycled paper saves approximately eight trees.
19. Dreams can be a rich source of inspiration for musicians.
20. Many designers took inspiration from ethnic minorities.
21. They are discussing the preservation of natural resources.

1. The description of the product was very detailed and informative.

   • Describe (verb) → Description (noun)
     Công thức: V + N

2. It’s important for children to learn to get on with each other.

   • Importance (noun) → Important (adjective)
     Công thức: N + adj

3. He spoke English naturally after he lived in England for several months.

   • Nature (noun) → Natural (adjective) → Naturally (adverb)
     Công thức: N + adj → adv

4. The teacher often emphasizes the importance of studying for the test.

   • Emphasis (noun) → Emphasize (verb)
     Công thức: N + V

5. Environmental concerns are becoming increasingly important in today’s world.

   • Environment (noun) → Environmental (adjective)
     Công thức: N + adj

6. When you finish doing the crossword, the solution is on the back page.

   • Solve (verb) → Solution (noun)
     Công thức: V + N

7. She trained very hard to beat her competitors in the race.

   • Compete (verb) → Competitor (noun)
     Công thức: V + N

8. Her skirt was beautifully patterned with flowers and leaves.

   • Pattern (noun) → Patterned (adjective)
     Công thức: N + adj

9. The destruction of the rainforest is a big problem.

   • Destroy (verb) → Destruction (noun)
     Công thức: V + N

10. My friend, John, is very adventurous and loves to try new things.

    • Adventure (noun) → Adventurous (adjective)
      Công thức: N + adj

11. Many countries are still developing their economies.

    • Develop (verb) → Developing (present participle)
      Công thức: V + V-ing

12. We must act responsibly and take responsibility for our actions.

    • Responsible (adjective) → Responsibly (adverb)
      Công thức: Adj + adv

13. Tet is one of the most celebrated holidays for Vietnamese people.

    • Celebrate (verb) → Celebrated (adjective, past participle)
      Công thức: V + adj (past participle)

14. The teacher’s inspirational words left a lasting impact on her students.

    • Inspiration (noun) → Inspirational (adjective)
      Công thức: N + adj

15. We can help save natural resources by collecting used things like paper and cans.

    • Nature (noun) → Natural (adjective)
      Công thức: N + adj

16. Peter’s reading and writing skills are excellent.

    • Excel (verb) → Excellent (adjective)
      Công thức: V + adj

17. The basketball team participated in the match very actively yesterday.

    • Participate (verb) → Participated (past tense)
      Công thức: V + V-ed

18. One ton of recycled paper saves approximately eight trees.

    • Approximate (verb) → Approximately (adverb)
      Công thức: V + adv

19. Dreams can be a rich source of inspiration for musicians.

    • Inspire (verb) → Inspiration (noun)
      Công thức: V + N

20. Many designers took inspiration from ethnic minorities.

    • Inspire (verb) → Inspiration (noun)
      Công thức: V + N

21. They are discussing the preservation of natural resources.

    • Nature (noun) → Natural (adjective)
      Công thức: N + adj

Các công thức này giúp bạn hiểu cách mà từ vựng chuyển đổi từ loại này sang loại khác, ví dụ từ động từ sang danh từ, từ tính từ sang trạng từ, v.v.