thirdly,correct it by yourself and for each other. Comparing it to the moddle essay, students initially correct the wrongs already found out.Or arrange for the students to correct it for each other,making corrections after disscussing with each other and reaching agreement, thus it will be natural to find oneself's problems through reading other's essay. If there is some question in dispute, ask the teacher on the spot to solve the problem in time. Naturally, the interest in writing will be increased.