Tóm tắt
Quantifiers = từ đứng trước danh từ để chỉ số lượng nhiều hay ít.
| Quantifier | Dùng với | Ví dụ |
|---|---|---|
| many | countable plural | many students, many problems |
| much | uncountable | much time, much evidence |
| few / a few | countable plural | few options / a few ideas |
| little / a little | uncountable | little money / a little help |
| some / any | cả hai | some water / any students |
| a lot of / lots of | cả hai | a lot of time / lots of people |
| several | countable plural | several reasons |
| plenty of | cả hai | plenty of time / plenty of books |
| a great deal of | uncountable | a great deal of evidence |
| a large number of | countable plural | a large number of people |
Tại sao quan trọng
Lỗi dùng sai quantifier (much students, few information...) bị đánh giá là lỗi cơ bản trong IELTS. Nắm vững quantifiers giúp: - Diễn đạt số lượng chính xác trong Writing Task 1 (mô tả dữ liệu) - Lập luận thuyết phục trong Task 2 (most people, a significant proportion...) - Nói tự nhiên và đa dạng trong Speaking
Many vs Much
Many — đếm được, số nhiều
many + countable plural noun
- Many students struggle with academic writing.
- There are many factors contributing to unemployment.
- How many people attended the event?
Much — không đếm được
much + uncountable noun
- Much research has been conducted in this area.
- There isn't much time left.
- How much money was spent?
Lưu ý: "Much" thường dùng trong câu phủ định và câu hỏi. Trong câu khẳng định, ưu tiên "a lot of" hoặc "a great deal of": - ❌ Much research supports this view. (nghe cứng trong văn thông thường) - ✅ A great deal of research supports this view. (học thuật hơn) - ✅ Much of the research supports this view. (chấp nhận được trong academic writing)
Few vs Little — Âm tính (ít đến mức thiếu)
Few — countable, mang nghĩa âm tính
few + countable plural noun = "không đủ / quá ít"
- Few governments have successfully implemented this policy. (Rất ít — ngụ ý đáng tiếc)
- Few people are aware of this problem.
- There are few solutions to this crisis.
Little — uncountable, mang nghĩa âm tính
little + uncountable noun = "không đủ / quá ít"
- There is little evidence to support this claim. (Gần như không có bằng chứng)
- Little progress has been made in recent years.
- He showed little interest in the project.
A few vs A little — Dương tính (có một ít)
A few — countable, dương tính
a few + countable plural noun = "có một chút — đủ dùng"
- I have a few suggestions for improving this. (có vài gợi ý)
- Let me give you a few examples.
- She needed a few days to recover.
A little — uncountable, dương tính
a little + uncountable noun = "có một ít — đủ dùng"
- Could you give me a little more time? (xin thêm một chút thời gian)
- There is a little hope remaining.
- I have a little experience in this field.
Tóm tắt few vs little
| Âm tính (quá ít, thiếu) | Dương tính (có một ít, đủ) | |
|---|---|---|
| Countable | few (ít hơn mức cần) | a few (có một số) |
| Uncountable | little (ít hơn mức cần) | a little (có một ít) |
Ví dụ so sánh: - Few students passed. (Rất ít em đỗ — kết quả đáng lo ngại) - A few students passed. (Có một vài em đỗ — tốt hơn không có gì) - Little funding was available. (Gần như không có kinh phí) - A little funding was available. (Có một ít kinh phí)
Some vs Any
Some — khẳng định, đề nghị, mời mọc
- Some countries have adopted this approach. (một số nước)
- Would you like some water? (mời/đề nghị)
- Some students find writing difficult.
Any — phủ định, câu hỏi, điều kiện
- Are there any questions? (câu hỏi)
- There aren't any exceptions. (phủ định)
- If you have any concerns, let me know. (điều kiện)
Any trong câu khẳng định = "bất kỳ": - You can ask any question you like. - Any country can participate.
Quantifiers trang trọng — Dùng trong IELTS Writing
| Informal | Formal / Academic |
|---|---|
| a lot of people | a large number of people |
| a lot of research | a great deal of research |
| lots of evidence | a significant amount of evidence |
| many countries | the majority of countries |
| most | the vast majority of |
| some | a proportion of / a number of |
Ví dụ viết lại:
- ❌ A lot of studies show that exercise is beneficial.
-
✅ A considerable number of studies demonstrate that exercise yields significant health benefits.
-
❌ Many countries have this problem.
- ✅ The majority of countries experience this issue to varying degrees.
Quantifiers quan trọng khác
Several — một số (nhiều hơn a few, ít hơn many)
Chỉ dùng với countable plural:
- There are several reasons for this trend.
- Several studies have reached similar conclusions.
- The policy has several notable weaknesses.
Plenty of — đủ nhiều, thừa thãi
Dùng với cả countable và uncountable:
- There is plenty of time before the deadline.
- There are plenty of opportunities available.
- She has plenty of experience in this field.
A number of — một số (tương đương "some/several")
Dùng với countable plural, động từ số nhiều:
- A number of students have raised this concern. (students → động từ số nhiều)
- A number of factors contribute to this problem.
Phân biệt "the number of" vs "a number of": - The number of students is increasing. (số lượng → số ít) - A number of students are struggling. (một số học sinh → số nhiều)
The majority of / A minority of
- The majority of participants agreed with the proposal.
- A minority of people remain opposed.
Lỗi thường gặp
Lỗi 1: Dùng "many" với uncountable
- ❌ There is many evidence to support this.
- ✅ There is much evidence / a great deal of evidence to support this.
- ❌ Many information has been gathered.
- ✅ Much information / A great deal of information has been gathered.
Lỗi 2: Dùng "much" với countable
- ❌ There are much students in the class.
- ✅ There are many students in the class.
- ❌ We need much more workers.
- ✅ We need many more workers.
Lỗi 3: Nhầm "few" và "a few"
- ❌ The situation is positive — few solutions exist. (ngụ ý không đủ)
- ✅ The situation is positive — a few solutions exist.
- ❌ The outlook is bleak but a few alternatives remain. (cần nhấn mạnh tính âm tính)
- ✅ The outlook is bleak but few alternatives remain.
Lỗi 4: "A number of" + singular verb
- ❌ A number of students is struggling.
- ✅ A number of students are struggling. (subject thực là "students")
Lỗi 5: "Several" với uncountable
- ❌ There is several evidence...
- ✅ There is some evidence... / There are several pieces of evidence...
Ứng dụng trong IELTS
Writing Task 1 — Mô tả dữ liệu:
- "A significant number of respondents indicated a preference for online shopping."
- "The vast majority of households in the survey reported owning at least one car."
- "A small proportion of participants had little or no access to internet services."
- "Several countries showed considerable improvements in literacy rates."
- "Few nations managed to achieve the target by the deadline."
Writing Task 2 — Lập luận:
- "A great deal of research suggests that early childhood education yields long-term benefits."
- "Many people argue that technology isolates individuals; however, a significant number of studies suggest the opposite."
- "Few would dispute that access to clean water is a fundamental human right."
- "There are several compelling reasons why governments should invest more in public health."
- "The majority of experts agree that immediate action is required."
Speaking Part 3 — Thảo luận:
- "I think a lot of young people are genuinely concerned about the environment."
- "There are quite a few barriers that prevent people from getting higher education."
- "Most people I know use social media daily, but a few of my friends have deliberately avoided it."
Bài tập luyện
Chọn quantifier đúng
- There is (much/many) ___ pollution in the city.
- (Few/A few) ___ countries have succeeded in reducing poverty significantly.
- She only had (little/a little) ___ time to prepare.
- (Many/Much) ___ research has been done on this topic.
- There are (several/much) ___ solutions to consider.
Sửa lỗi
- There is many evidence that exercise improves mental health.
- A number of research have been conducted.
- Few solutions exist, so we are optimistic.
- Much students choose to study online these days.
- A number of funding is available for this project.
Đáp án
Quantifier đúng: 1. much | 2. Few | 3. a little | 4. Much / A great deal of | 5. several
Sửa lỗi: 1. There is much / a great deal of evidence... (evidence = uncountable) 2. A great deal of research has been conducted. (research = uncountable; "a number of" → countable plural) 3. A few solutions exist, so we are optimistic. (positive → "a few") 4. Many students choose... (students = countable plural) 5. A significant amount of funding is available. (funding = uncountable)
Tóm tắt nhanh
| Countable plural | Uncountable | |
|---|---|---|
| Nhiều | many / a large number of | much / a great deal of / a large amount of |
| Đủ nhiều | plenty of / several | plenty of |
| Ít (âm tính) | few | little |
| Có một ít (dương tính) | a few | a little |
| Một số | some / a number of | some / a proportion of |
| Không có | not any / no | not any / no |
Quy tắc vàng: - many / few / a few / several → chỉ dùng với countable plural - much / little / a little → chỉ dùng với uncountable - few (âm tính: không đủ) ≠ a few (dương tính: có một số) - little (âm tính) ≠ a little (dương tính) - Trong IELTS Writing: thay "a lot of" bằng "a large number of" (countable) hoặc "a great deal of" (uncountable)