Why translation can not be used during teaching target language?

Using translation is surely a natural and obvious means of teaching someone a new language. It has lots of good effects. It can be used to aid learning, practise what has been learned, diagnose problems, and test proficiency.  In any case, teachers can’t stop students translating – it is such a fundamental basis for language learning.

Translation is also useful skill in itself. And not just for professional translators and interpreters. In multilingual societies and a globalised world, translation is all around us as an authentic act of communication: from families, schools, hospitals, courts, and clinics, to business meetings and the United Nations. We find it in notices, labels, menus, subtitles, news interviews and many other places.