It is possible english taecher to use english without mother tongue every time he or she teach?

It is impossible because the mother tongue is the most important part of culture. If the mother is not in the language used in teaching at the school then the future generation does not know their native language so as to make a culture that does not ruin them knowing it and in addition there are also other factors influencing cultural factors, not all students understand when in teaching the language English is full, then whether the ability of resources in Indonesia is enough to at apply matter, matter and what materials are appropriate when the right to teach English.
Sometimes the power of teaching to find an appropriate solution to this with, teach using 2 languages namely mother tongue and English, then help students translate difficult terminology into native languages, not all teachers fully role of English teachers who are in the area tends to use the mother tongue as language of instruction, not all words in the English language example is the name of the town, the names of certain sights fixed.