教师指导学生作文,讲解作文基本知识是必要的,但如果只注重讲解,不注重学生的知识积累和修改,学生的写作水平也难于提高。 It is necessary for teachers to instruct students ’composition and explain the basic composition knowledge. However, if they only pay attention to explaining and do not pay attention to the accumulation and modification of students’ knowledge, it is hard for the students to improve their writing skills.