The goal of grammar instruction is to enable students to carry out their communication purposes .Therefore the student is the center of teaching,and Instructors teach grammar forms and structures in relation to meaning and use for the specific communication tasks that students need to complete. teachers not to focus on error correction of students and also need to build students' confidence in their ability to use the language by focusing on the content of their communication rather than the grammatical form.
Teachers can use error correction to support language acquisition, and avoid using it in ways that undermine students' desire to communicate in the language, by taking cues from context.