留学论文中逗号被用来分隔分句和短语。由于传统英语论文写作教学中没有对标点进行系统的指导，导致很多同学在出国留学之后完成留学论文在使用标点时「随性而为」,「凭感觉」做判断，给老师留下「不严谨」、「不规范」的不良印象论文，最终论文分数没能达到理想的的成绩。
例如：
Demand for irrigation water is mainly influenced by climate change,the scale and patterns of crop planting,the use of water saving technologies and other such factors.
Therefore,exploring the factors that influence the irrigation water demand,and quantifying their contribution to that demand could provide insights on controlling the scale of agriculture.
抛开词汇表达不说，这两个句子中都出现了逗号的不恰当用法。那么今天hansedu小编就根据留学生论文写作中经常出现的错误来聊聊“逗号”的一些用法。
一.句子中包含数量≥3的单词，词组或者分句时用逗号将其分隔开来。特别是在连接最后一个要素的并列词之前也加上逗号。
例如刚才提到的学生论文中的例子:
Demand for irrigation water is mainly influenced by climate change,the scale and patterns of crop planting,the use of water saving technologies and other such factors.
标点符号应改为:
Demand for irrigation water is mainly influenced by climate change,the scale and patterns of crop planting,the use of water saving technologies,and other such factors.
推荐表达为:
Demand of irrigation water is mainly influenced by climate change,the scale and patterns of crop planting,the use of water saving technologies,and other factors(and so on).
二.句子中连续的词组或者分句最后是以表继续或者省略的词组结束时，例如\so forth,and so on,and the like\这样的词组，需在其前面加上逗号。若这类词组后面还接有其它句子成分，则可酌情添加逗号来避免歧义。
例如:
Using such techniques,management can improve not only productivity but also hours,working conditions,training,benefits,and so on,without reducing wages.
三.非限制定语短语出现在句子中需用逗号分隔。
例如:
The professor,wearing a blue hat,attended the conference.此处“wearing a blue hat”为非限制定语短语，用逗号分隔。
The lady wearing a blue hat is the professor.此处“wearing a blue hat”为限制性修饰勿使用逗号。
四.介绍性的词组，例如for instance,for example,in other words，that is...出现在句首时后面需加逗号；若出现在句中，则前后都使用逗号来进行分隔。
例如:
That is,researchers still have hunches and use exploratory methods.
Some methods,however,are particularly well suited to applying all three,for example,grounded theory as explained by…
五.句子中出现的连接副词或者副词词组，都需要用逗号分隔。
例如:
Nevertheless,it is a matter of great significance.
Recently a signi?cant effort to model these systems has also examined,in particular,the role of this element in determining the behavior of…
六.复合句中的并列词，类似and,but,or,so,yet等，连接两个独立句子并且这两个句子在含义上需要一个停顿的话，我们在这些并列词前面需加上逗号。但是如果并列词连接的是并列主语或者谓语则不用加逗号。
例如文章开头提到的留学论文中的句子:
Therefore,exploring the factors that influence the irrigation water demand,and quantifying their contribution to that demand could provide insights on controlling the scale of agriculture.
应修改为:
Therefore,exploring the factors that influence the irrigation water demand and quantifying their contribution to that demand could provide insights on controlling the scale of agriculture.
此处“exploring the factors that influence the irrigation water demand”和“quantifying their contribution to that demand”为该句的并列主语，用and连接但是不加逗号。
希望本文的都好使用规范可以帮助大家正确认识逗号的使用方式方法，往往细节决定成败，大家不要忽视逗号使用细节。最后如果因为实在时间紧急，due近在眼前自己却写不出来，这种情况选择学术辅导机构辅导理清写作思路也是一种比较实际的解决办法，毕竟论文是最重要的我们要尽力避免挂科才行，以上就是本期全部内容小编希望大家看完有所收获，那么我们下期再见！
英国留学论文逗号正确使用规范---英国翰思教育
