1. Usually, people from different parts of a country speak their language with different accents. (The verb "are speaking" should be "speak" - simple present tense is more appropriate for a general statement.)
2. Some people exercise at a shopping center even though they dislike its well-lit areas. (The original sentence implies they like the well-lit areas, which contradicts the "although" clause. "Even though they dislike" makes the contrast logical.)
3. The Glastonbury Festival in England is a celebration of music and attracts thousands of people every year. (The verb tense should be consistent. "Attracts" is simple present, reflecting a recurring event. Also, "it has attracted" is not grammatically parallel with the other verbs.)
4. The disappearance of Amelia Earhart and her plane in 1937 over the Bermuda Triangle has created many theories. (The original sentence uses "Bermuda sea," which is incorrect. It should be "Bermuda Triangle" or "Atlantic Ocean." Also, "a lot of theories" can be improved to "many theories.")
5. In the test, the scientist had the dog look at itself in the mirror to see if it could recognize its image. (The verb "let" requires a base verb without "to" after it. Also, "it" should be "itself" as the dog is looking at its own reflection.)
6. I could understand what the text is about if I could focus fully, but there is too much noise outside. (The phrase "much too noise" is grammatically incorrect. It should be "too much noise.")
7. People living in villages in the country now have access to supermarkets nearby. (The phrase "access with" is incorrect. It should be "access to.")
8. The announcement says that the sale will last for 2 hours, from 5 pm to 7 pm tomorrow. (The original sentence uses "2 hours from 5 pm to 7 pm," which is redundant. "2 hours, from 5 pm to 7 pm" is sufficient.)
9. If water pollution becomes more serious in the future, it will affect the development of the economy and society. (The conditional clause should use "becomes" (simple present) for a future real condition, not "gets.")
10. Since 1965, the maple leaf has been the most well-known Canadian symbol. (The phrase "the leaves are becoming" is incorrect. The singular "maple leaf" is the symbol, and the verb should be "has been.")

1. Usually, people from different parts of a country are speaking their language with a different accent.

• Lỗi: Sai thì. Câu này nên dùng thì hiện tại đơn (simple present) để diễn tả một sự thật hiển nhiên.
• Sửa: Usually, people from different parts of a country speak their language with a different accent.

2. Some people exercise at a shopping center although they like its well-lit areas.

• Lỗi: "although" (mặc dù) không phù hợp về nghĩa. Nên dùng "because" (bởi vì) để chỉ nguyên nhân.
• Sửa: Some people exercise at a shopping center because they like its well-lit areas.

3. The Glastonbury Festival in England is a celebration of music and it has attracted thousands of people every year.

• Lỗi: Lặp từ "it".
• Sửa: The Glastonbury Festival in England is a celebration of music and attracts thousands of people every year.
• Hoặc: The Glastonbury Festival in England is a celebration of music that attracts thousands of people every year.

4. The disappear of Amelia Earhart and her plane in 1937 over Bermuda sea has created a lot of theories.

• Lỗi: Sai dạng danh từ "disappear".
• Sửa: The disappearance of Amelia Earhart and her plane in 1937 over the Bermuda Sea has created a lot of theories.

5. In the test, the scientist let the dog look at it in the mirror to see if it could recognize its image.

• Lỗi: "let" cần được theo sau bởi động từ nguyên hình không "to".
• Sửa: In the test, the scientist let the dog look at it in the mirror to see if it could recognize its image.
• Tuy nhiên, câu này có vẻ diễn đạt hơi tối nghĩa, có thể sửa lại như sau:
  • In the test, the scientist made the dog look at itself in the mirror to see if it could recognize its image.

6. I could understand what the text is about if I could focus fully, but there is much too noise outside.

• Lỗi: Sai trật tự giới từ "too much".
• Sửa: I could understand what the text is about if I could focus fully, but there is too much noise outside.

7. People living in villages in the country now can have access with supermarkets nearby.

• Lỗi: Sai giới từ "with".
• Sửa: People living in villages in the country now can have access to supermarkets nearby.

8. The announcement says that the sale will last for 2 hours from 5 pm to 7 pm tomorrow.

• Lỗi: Không cần "for" (vì "from...to" đã đủ diễn tả khoảng thời gian).
• Sửa: The announcement says that the sale will last 2 hours from 5 pm to 7 pm tomorrow.

9. If water pollution gets more serious in the future, it would affect the development of economy and society.

• Lỗi: "economy" (kinh tế) cần được dùng như tính từ để bổ nghĩa cho "development".
• Sửa: If water pollution gets more serious in the future, it would affect the development of economic and social development.
• Hoặc: If water pollution gets more serious in the future, it would affect the development of the economy and society.

10. Since 1965 the maple tree with the leaves are becoming the most well-known Canadian symbol.

• Lỗi: Sai thì và sự hòa hợp giữa chủ ngữ và động từ. "The maple tree" là số ít nhưng động từ lại chia cho số nhiều "are becoming".
• Sửa: Since 1965, the maple tree has become the most well-known Canadian symbol.
• Hoặc: Since 1965, the maple leaf has become the most well-known Canadian symbol. (Vì lá phong là biểu tượng phổ biến hơn là cả cây phong).