Meaning & Usage
In the C2 level of Vietnamese proficiency, mastering the language used to describe charts and graphs, often referred to as ngôn ngữ biểu đồ, is crucial for academic, professional, and business contexts. This grammar point encompasses a broad range of vocabulary and grammatical structures essential for analyzing, interpreting, and presenting statistical data, trends, and comparisons effectively. Unlike simpler topics that focus on a single grammatical pattern, this involves a thematic collection of expressions that allow for precise and nuanced communication about quantitative information.
Understanding ngôn ngữ biểu đồ in Vietnamese means being able to articulate dynamic changes over time, compare different data points, express proportions, identify causes and effects, and make projections. It requires a solid grasp of verbs denoting increase (tăng, tăng trưởng, leo thang), decrease (giảm, sụt giảm, suy giảm), stability (ổn định, giữ vững, đi ngang), and fluctuation (biến động, dao động). Furthermore, it involves the correct usage of prepositions and conjunctions to link ideas, such as expressing 'from...to...' (từ... đến...), 'by' (bằng), 'compared to' (so với), or 'accounting for' (chiếm). Learners must move beyond basic translations and cultivate an intuitive sense for the most natural and appropriate phrasing in Vietnamese.
Compared to English, where a rich array of synonyms exists for describing trends (e.g., 'soared,' 'plunged,' 'stabilized'), Vietnamese also offers similar depth, often with a preference for specific verbs and adverbs that convey precise degrees of change. For example, while 'to increase' can be simply tăng, adding an adverb like đáng kể (significantly) or nhẹ (slightly) provides more detail. The formality of the language will often depend on the context – a business presentation might employ more formal terms (e.g., xu hướng tăng trưởng - growth trend), whereas a casual discussion about personal finances could use simpler expressions. While there are generally fewer pronounced Northern vs. Southern differences in this specialized vocabulary compared to everyday conversational Vietnamese, some preferences in phrasing or specific word choices might occur. The mental model should be to think about the 'story' the data tells and select the most accurate and impactful Vietnamese words and structures to convey that narrative, much like an experienced journalist or analyst would.
Structure & Formation
Describing charts and graphs involves combining various grammatical elements rather than adhering to a single, rigid structure. Key patterns often revolve around subject-verb-object (SVO) order, with specific verbs and adverbial phrases indicating change, comparison, and proportion. Here are some common structural categories:
1. Describing Trends (Tăng/Giảm/Ổn định)
Subject + Verb of Change + (Adverb of Degree) + (Quantity/Percentage) + (Time Period/Compared to)
Example: Doanh số bán hàng tăng đáng kể 20% trong quý vừa qua. (Sales increased significantly by 20% in the last quarter.) Example: Lợi nhuận giảm nhẹ từ tháng 3 đến tháng 4. (Profits decreased slightly from March to April.)
2. Making Comparisons (So với)
Data Point A + (Verb/Adjective) + hơn/kém + Data Point B + (Quantity/Percentage)
Example: Doanh thu năm nay cao hơn năm ngoái 15%. (This year's revenue is 15% higher than last year's.)
Compared to + Data Point B, Data Point A + (Verb/Adjective) + (Adverb of Degree)
Example: So với quý trước, số lượng khách hàng mới tăng mạnh. (Compared to the previous quarter, the number of new customers increased sharply.)
3. Expressing Proportions (Chiếm)
Category + chiếm + Percentage + tổng số/tổng cộng
Example: Ngành dịch vụ chiếm 60% tổng sản phẩm quốc nội. (The service sector accounts for 60% of the GDP.) Example: Phụ nữ chiếm phần lớn lực lượng lao động. (Women make up the majority of the workforce.)
4. Indicating Peak/Trough (Đạt đỉnh/Chạm đáy)
Subject + đạt đỉnh/chạm đáy + vào + Time/Value
Example: Giá dầu thô đạt đỉnh vào tháng 7 năm 2023. (Crude oil prices peaked in July 2023.)
5. Describing Stability/Fluctuation (Ổn định/Biến động)
Subject + giữ mức ổn định/biến động mạnh + trong khoảng thời gian
Example: Tỷ giá hối đoái giữ mức ổn định trong suốt nửa đầu năm. (The exchange rate remained stable throughout the first half of the year.)
Example Sentences
Describing Trends
Lượng mưa trung bình hàng năm đã tăng lên đáng kể trong thập kỷ qua.
The average annual rainfall has increased significantly over the past decade.
Giá cổ phiếu của công ty đã giảm mạnh sau khi công bố báo cáo tài chính.
The company's stock price plummeted after the financial report was announced.
Chỉ số lạm phát duy trì ổn định ở mức 3% trong ba quý liên tiếp.
The inflation rate remained stable at 3% for three consecutive quarters.
Số lượng du khách quốc tế đến Việt Nam đã phục hồi trở lại mức trước đại dịch.
The number of international tourists to Vietnam has recovered to pre-pandemic levels.
Tỷ lệ thất nghiệp dao động nhẹ quanh mức 2.5% trong năm nay.
The unemployment rate fluctuated slightly around 2.5% this year.
Making Comparisons
Doanh thu quý này cao hơn 15% so với cùng kỳ năm ngoái.
This quarter's revenue is 15% higher compared to the same period last year.
Ngân sách cho nghiên cứu và phát triển thấp hơn nhiều so với dự kiến ban đầu.
The budget for research and development is much lower than initially projected.
Mức tiêu thụ năng lượng ở khu vực nông thôn tương đương với khu vực thành thị.
Energy consumption in rural areas is equivalent to that in urban areas.
Reporting Proportions
Phụ nữ chiếm gần một nửa tổng số lao động trong ngành dệt may.
Women account for nearly half of the total workforce in the textile industry.
Khoảng 70% dân số sử dụng điện thoại thông minh để truy cập internet.
Approximately 70% of the population uses smartphones to access the internet.
Các sản phẩm xuất khẩu chủ lực chiếm phần lớn giá trị thương mại.
Key export products constitute the majority of trade value.
Indicating Peaks and Troughs
Số ca nhiễm COVID-19 đạt đỉnh vào tháng 8 năm 2021.
The number of COVID-19 cases peaked in August 2021.
Tỷ lệ sinh giảm xuống mức thấp nhất trong lịch sử vào năm 2022.
The birth rate dropped to its lowest historical level in 2022.
Common Mistakes
Mistake 1: Literal Translation of "by" or "to" for changes
❌ Giá tăng bởi 10%.
✅ Giá tăng 10%.
Learners often try to directly translate prepositions like "by" or "to" when describing an increase or decrease. In Vietnamese, the percentage or quantity of change usually follows the verb directly, without an explicit preposition like bởi or đến when indicating the magnitude of change. When indicating a target value or range, lên đến (up to) or xuống còn (down to) are used.
Mistake 2: Incorrect Verb Choice for Different Types of Change
❌ Doanh số lớn 10%.
✅ Doanh số tăng 10%.
Using a general adjective like lớn (big) instead of a specific verb of change like tăng (increase) or giảm (decrease) is a common error. Vietnamese has precise verbs for different types of movement in data. For instance, tăng trưởng implies growth, sụt giảm implies a sharp decline, and biến động implies fluctuation.
Mistake 3: Misplacing Time Expressions
❌ Trong quý vừa qua tăng doanh thu.
✅ Doanh thu tăng trong quý vừa qua.
While Vietnamese has flexibility in word order, placing time expressions at the beginning of a sentence (e.g., trong quý vừa qua) is acceptable, but it's more natural for the subject and its action (the trend) to come first, followed by the time frame, especially in formal data description. Time phrases often function as adverbs modifying the verb.
Mistake 4: Overusing 'là' in Descriptive Sentences
❌ Tỷ lệ thất nghiệp là 5%.
✅ Tỷ lệ thất nghiệp ở mức 5%.
English often uses "is" or "was" when stating a figure. While là can be used for identification, for stating a value or level, ở mức (at the level of) or simply stating the number after the noun phrase is more common and natural in Vietnamese when describing data. For example, "The unemployment rate was 5%" is better expressed as Tỷ lệ thất nghiệp ở mức 5% or Tỷ lệ thất nghiệp là 5% (if identifying, e.g., "The unemployment rate IS 5%, not 6%").
Cultural Notes
In Vietnamese business and academic settings, presentations involving charts and graphs tend to be direct and data-driven, similar to Western contexts. Clarity and precision are highly valued. While politeness is generally important in Vietnamese communication, when presenting factual data, the emphasis shifts to objective reporting. You'll find a preference for unambiguous language rather than vague statements. It's common to see a structured approach: introduce the chart, describe the main trends, highlight key figures, make comparisons, and finally, draw conclusions or implications. The use of Hán-Việt vocabulary (Sino-Vietnamese words, which are often more formal and technical) is prevalent in formal reports and academic papers, making the language concise and professional. For example, thống kê (statistics), xu hướng (trend), biến động (fluctuation), dự báo (forecast) are all Hán-Việt terms. While some Northern and Southern differences might exist in colloquial speech, the formal language for describing data generally remains consistent across regions, ensuring clear communication in national and international contexts.
Practice Tips
To master ngôn ngữ biểu đồ, consistent practice with real-world data is key. A highly effective strategy is to find simple charts or graphs from Vietnamese news articles (e.g., economic news, market reports) or government statistics websites. Start by identifying the main trends – what went up, what went down, what stayed the same. Then, try to describe these trends aloud or in writing, aiming to use a variety of verbs and adverbs for change (tăng, giảm, ổn định, dao động, mạnh, nhẹ, đáng kể). Pay close attention to how native speakers phrase these descriptions in news reports or analyses. Practice making comparisons using so với and expressing proportions with chiếm.
Another useful exercise is to practice summarizing a chart's story in 3-5 sentences, then expanding that into a more detailed paragraph. For C2 learners, actively seeking out Vietnamese economic forecasts, market analyses, or scientific reports and attempting to understand the data descriptions will significantly enhance your comprehension and production skills.
For the NLTV C2 exam, expect tasks that require you to interpret visual information (like charts, graphs, or tables) and summarize or discuss the findings in coherent and grammatically correct Vietnamese. Practice writing short essays or presentations based on provided data to hone these advanced skills, focusing on precise vocabulary and complex sentence structures.