... idiomatic usage and the culture differences of two countries, England and Vietnam? Therefore, an analysis of errors in using prepositions of place AT, ON, IN is carried out to help answer these ... learners use in language learning. Secondly, to identify causes of learner's errors. Finally, to obtain information on common difficulties in language learning, as an aid to teaching or in the ... preparation of teaching materials1.2.4. Causes of errors Second and foreign language learners commit a number of errors. Some of those errors are caused by mother tongue interference and they...