再请帮忙检查一下此句里是还有语法错误

1,sell -> selling
2,第二个逗号改成句号,因为后面的句子有单独的主语了.
3,decline做下降讲时是不及物动词,所以改成make your cost decline或者reduce cost
4,第三个逗号改成and,只有两项并列时不用逗号
5,your -> you
6,keep alive是及物动词,应加宾语,改为keep the business alive
7,afear -> fear
以上的改动均为语法问题,尽量不改你原来的用词和句式.
其实有的用词还可以改的更准确.比如contest改成competition更恰当.

Selling ice cream should not start from winter,because there are few consumers in winter. This stituation make you have to decline your cost and increase your service quality.If you can keep alive in winter,it means that you will not face the contest of in summer.
上面的回答不知道能不能有帮助！

开头用selling吧 后面你个this stituation force you to decline 其他的暂时没发现 希望对你有帮助

Ice cream sale should start from winters, because there are few consumers in winters, which forces you to decrease your cost and to increase your service quality.If you can keep alive in winters,it means that you will not fear the market competition in summer.