冠詞a、an、the的使用

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中國學生在寫論文時經常遺漏a、an和the這類冠詞。由於在漢語中並不一定要使用冠詞，所以對於英語非母語的人士來說，冠詞使用的規則較為複雜。

冠詞使用錯誤有以下幾種類型：

1. 該用的時候沒用
2. 無需使用的時候用了
3. 在該使用其他冠詞的時候錯誤使用

用以下例子說明該如何使用冠詞

Incorrect Figure 2 shows the distribution of relative velocity on surface of main and splitter blades.

Correct Figure 2 shows the distribution of relative velocity on the surface of the main and splitter blades.

Incorrect The software PowerSHAPE is chosen to be a 3D modeling tool; it is good at dealing with free surfaces and curves.

Correct The software PowerSHAPE is chosen to be the 3D modeling tool; it is good at dealing with free surfaces and curves.

研究中只使用了一種3D modeling tool，所以「3D modeling tool」是特定的，應使用冠詞the。

Incorrect A theoretical method for calculating the inner flow-field in centrifugal impeller with splitter blades and investigation of the interactions between main and splitter blades is presented in this paper. The vortices are distributed on the main and splitter blades to simulate the effects of flows. Systematical study of number and distribution of vortices is conducted.

Correct A theoretical method for calculating the inner flow-field in a centrifugal impeller with splitter blades and an investigation of the interactions between main and splitter blades is presented in this paper. The vortices are distributed on the main and splitter blades to simulate the effects of flows. A systematical study of the number and distribution of vortices is conducted.

Incorrect Theoretically, remanufacturing could fully take advantage of resources contained in EOF product thereby minimizing impact on environment to the greatest extent compared to landfill or recycling of materials; consequently it contributes greatly to resource conservation.

Correct Theoretically, remanufacturing could fully take advantage of resources contained in anEOF product thereby minimizing the impact on the environment to the greatest extent compared to landfill or recycling of materials; consequently it contributes greatly to resource conservation.

來源：The Most Common Habits from more than 200 English Papers written by Graduate Chinese Engineering Students （By Felicia Brittman）

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