Felicia Brittman通过编辑200多篇中国理工科研究生撰写的英文论文，观察和总结了一些最常见的语法错误和表达习惯问题。她在文章中对这些问题举例说明，并给出了示范文本和修改建议。
本系列基于Felicia Brittman的文章 The Most Common Habits from more than 200 English Papers written by Graduate Chinese Engineering Students （www.SciEI.com），将这些易错点一一道来，帮助JDIS用户避免这些问题，提高英语论文的写作水平。
第五节 要不要“分别”？
‘Respectively’ and ‘respective’
这两个词的使用通常是不正确或混淆的，比如下面的例子。
示例1
“
在句中的位置错误，respectively 被放在它所指代的名词之前。
Incorrect：
Equations 2～6 can be respectively linearized as:……(equations given)…1
Correct：
Equations 2～6 can be linearized as:……(equations given)…, respectively.
Incorrect：
The weights of the two experts are respectively 0.600 and 0.400.2
Correct：
The weights of the two experts are 0.600 and 0.400, respectively.
示例2
“
插入respectively表示完成某件事有一定的顺序。但该顺序已经隐含在句子的其他部分，或者由于顺序对句子意思表达没有意义，也不需要加respectively。
Incorrect：
If both the core technology score and core quality score of a bottleneck process are, respectively, below certain scores, then we refer to strategy 1, otherwise, if either is, respectively, above a certain score, then we refer to strategy 2. Similarly, if the core technology and core quality are, respectively, above a certain score, then we refer to strategy 3, otherwise, if either is, respectively, below a certain score, then we refer to strategy 4.2
Correct：
If both the core technology score and core quality score of a bottleneck process are below certain scores, then we refer to strategy 1, otherwise, if either is above a certain score, then we refer to strategy 2. Similarly, if the core technology and core quality are above a certain score, then we refer to strategy 3, otherwise, if either is below a certain score, then we refer to strategy 4.
Incorrect：
Then, the rows of vortex due to both of the long and short blades are transformed into two singularities on the z -plane and integrate the induced velocity along the blades respectively.3
Correct：
Then, the rows of vortex due to both of the long and short blades are transformed into two singularities on the z -plane and integrate the induced velocity along the blades.
示例3
“
除了第2种情况，还有respectively指代不清楚的问题。
Incorrect：
The dynamic characteristics of a rotor with asymmetric stiffness or with initial warp have been studied before respectively [1-4]
Correct：
The dynamic characteristics of a rotor with asymmetric stiffness or with initial warp have been studied before [1-4].
Incorrect：
The inlet and outlet temperature of the air cooler were measured using two thermocouples respectively.4
Correct：
The inlet and outlet temperature of the air cooler were measured using two thermocouples .
尾注：
1.YE Yao, LIAN ZhiWei, HOU ZhiJian, ‘Heat Exchange Analysis of Cooling Coils Based on a Dynamic Model’, Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai, 200030, China
2.GU ZhengLing, WANG LiYa, QIAN ShanYang, ‘An AHP-based Method for Improving the Manufacturing Processes of Mass Customization’, Industrial Engineering and Management Department, Shanghai Jiao Tong University, Shanghai 200030, P.R. China, 2003
3.XU Jie and GU ChuanGang, ‘Numerical Calculation of the Flow-Field in a Centrifugal Impeller with Splitter Blades’, School of Power and Energy Engineering, Shanghai Jiao Tong University, Shanghai 20003.
4.DENG D. Q., XU L., Experimental investigation on the performance of an air cooler under frosting conditions, Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, No. 1954 Huashan Road, Shanghai, 200030, P.R. China, 2002
未完待续……
