1.适当用被动替换主动，这样能更客观的反映事实, 句子开头不要总是用we / I (比如写结尾时不用we should pay attention to而用Attention should be paid to. ) 举个经典结尾XXXX年X月六级作文的最后一段：It is ,therefore, high time that some applicable approaches were implemented by the service industry like that. By doing so，its competitive edge will be sharpened effectively.