Discussion of grammar should be very brief. In developing the 4 skills, follow the natural sequence of L1 learning. Language is speech, not writing. Language is a set of habits Teach the language, not about the language. A language is what native speakers say, not what they ought to say.
Languages are different.
The use of recombined material is a step above the grammar translation method. The focus on oral skills led to good pronunciation and accurate speech. The S-R approach did not account for a variety of learning and teaching styles. Monotony eliminated the effects of meaningfulness. One need not pay attention to form to acquire language.