This study established qualitative design in attempt to reveal impact exceed of obstruction features than construction which occurred in EFL classroom in Indonesia. This present study involved an English teacher and thirty five students. She taught three times lesson meeting, each of lesson carried out ninety minutes. From the present study found obstruction i.e., short wait time, teacher control the interaction, display question and yes/no question, teacher interruptions, ignore student error, overlap and latch turn, and form focused feedback and construction i.e., extended wait time, student initiated talk, referential question and open ended question, speech modification, direct repair, scaffolding, and content feedback. This result provides critical insights that the implementation of communication in the classroom and also fruitful reflection of other FL (foreign language) teachers to be indigenous people who involve students' contribution actively participate in classroom interaction.