Chữa đề IELTS Writing task 1 Loss in Generation of Electricity of Brown Coal

Đề thi thật IELTS Writing task 1

The diagrams below show the amount of energy lost in 100. units when it is generated from black coal and when it is generated from brown coal.

Phân tích đề bài và lập dàn ý

1. Phân tích đề bài

• Loại biểu đồ: Diagram
• Dữ liệu: Hai thông tin chính cần đưa vào bài:
  • Quy trình chung mà cả hai nguyên liệu đều đi qua. 
  • Số lượng cả hai nguyên liệu bị mất trong quá trình. 
• Lưu ý: Khác với bài quy trình thông thường, số lượng quy trình tương đối ít. Bởi vậy, mỗi khi mô tả xong bước 2 và 3, nên có ít nhất một câu để mô tả lượng điện năng bị mất. 

2. Dàn bài  

• Overview: Similar process, only difference being the energy loss. 4 steps, begin with transportation, ending with distribution
• Body 1: 
  - The first step: raw materials transported to the power stations. 
  - The second step: These materials converted into electricity, 
  - Loss: Assuming there are 100 units of black and brown coal transported in the previous step, the former loses 70 units, while the loss the latter experienced was slightly lower, at 68 units. 
• Body 2: 
  - The third step: transported into power lines for distribution. 
  - Loss: the number of units loss for brown coal were equal to that of black coal, both at 3 units

Sample Answer Band 7.5

The diagrams illustrate the process of electricity production for both black and brown coal, as well as the amount of energy losses that occur during the process.

Overall, no matter what types of material is utilized, the process of producing energy does not change - the only notable difference lies in how much energy is lost. The process itself consists of three distinct steps, including the transportation of coal, the conversion to electricity, and its distribution to the public.

The first step involves trucks transporting raw materials to the power stations. After that, these materials are converted into electricity, and it is worth mentioning that this conversion is quite resource-intensive. To be specific, assuming that there are 100 units transported to these stations, 70 units of energy will be lost if black coal is used as the material. Meanwhile, the loss experienced with brown coal is slightly lower, at only 68 units, proving this type of fuel is more efficient compared to black one, though not by much.

Once the conversion is finalized, the resulting electricity is transferred to the power lines, ready to be distributed to the public. This time, however, the amount of energy loss is negligible compared to the previous step. To continue the previous hypothetical, regardless what kind of coal is in use, only three units are lost by the time electricity reaches the consumers. 

Từ vựng IELTS hữu ích: 

• energy losses: tổn thất năng lượng
• the only notable difference lies in: sự khác biệt đáng chú ý duy nhất nằm ở
• consists of three distinct steps: bao gồm ba bước riêng biệt
• the conversion to electricity: quá trình chuyển đổi thành điện năng
• resource-intensive: tiêu tốn nhiều tài nguyên
• once the conversion is finalized: khi quá trình chuyển đổi hoàn tất
• the resulting electricity: lượng điện tạo ra
• ready to be distributed to the public: sẵn sàng được phân phối cho công chúng
• the amount of … is negligible: lượng … là không đáng kể
• reaches the consumers: đến tay người tiêu dùng