帮忙检查一下语法错误(30分)

对比着列的,请稍参考吧.

Many studies show that, the cigarette sales have seasonality nature: the lowest in the winter months and the highest in the summer months.

----Studies show that, the cigarette sales have a feature of seasonality-it bottoms out in winter and reaches the peak in summer.

There are several conjectures about this pattern, such as indoor smoking bans, restricting by which smokers are less willing to smoke in the cold whether months since they must smoke outdoor; New Year Resolution, smokers may make quitting efforts in the beginning of one year; youth smoking, in which there are summer peaks showing by some data because of a decrease in adult supervision.

----There are several conjectures about this pattern, such as indoor smoking bans, restricted by which in winter smokers are less willing to smoke in the cold weather outdoor, New Year Resolution-smokers may make quitting efforts in the beginning of one year, and youth smoking, in which there are summer peaks showing by data for a decrease in adult supervision.

Our study is to use regression to analyze the factors that contribute to the seasonality, which little research goes deep into.

Our study brings regression into the analysis of factors that contribute to the seasonality, into which few research goes deep. (我认为这里research指可数的调研~~)

It has several conspicuous differences from previous literature.

(考虑到衔接,是研究有不同,用IT HAS换掉了WE HAVE. 把the previous literature中的the去掉了.此处没有特指以前的哪些LITERATURE)

The data set we use is pool cross sectional data set which allows us to control different level fixed effects ...

----The data set we use is pool cross sectional data set which allows us to control fixed effects of different level...

(POOL CROSS SECTIONAL DATA SET这里不太明白;

后半句建议用of明确开,注意英文的修饰不建议象汉语可以一群群排队上)

Thirdly, we not only study the impact of the factor, but also study the way the factor influences the dependent variable,

---Thirdly, we study not only the..., but also the way...动词不建议用两遍

e.g. are the decision of whether or not to smoke and the number of cigarettes having per day influenced by temperature or by the intensity of variation in temperature.

----这句...E.G.是在做主语吗,不常见,可能不太正式. 英文的句子应避免结构的杂糅,句式可以用复合句来加强逻辑性,但是主线要很清晰才漂亮,不像汉语可以尽量铺陈.如果不好清晰化,退一步改简单些就好了.

楼主写得挺好的,有些地方再细雕琢些.我的仅做参考吧.