What are the key principles of the Audio lingual method?

1 language learning involves attending to form and structure
2 grammar and vocabulary are taught inductively
3 the students' native language can be used to give instructions when necessary, to help a student to improve his or her pronunciation
4 learned  competence  can correct utterances initiated  only if there is enough time
5 students are rarely corrected when they orally express themselves because the meaning is more important than the form