Swedish problems with English prepositions

English prepositions cause problems for learners of English. The way prepositions are taught has impact on how students learn. Using corpora in teaching makes it possible for teachers and pupils to explore language together and is a good alternative to filling in missing prepositions on worksheets. Sometimes linguistic errors are caused by mother tongue interference. Little research has been made earlier with a Swedish contrastive approach to prepositions but a great deal of literature concern language transfer and mother tongue interference. This essay is written on the assumption that Swedish as a first language interferes with English and causes prepositional mistakes. Two classes of ninth graders participated in my investigation. I wanted to find out if students performed better when they had given answers to choose from or when they had to produce the preposition themselves. My study proved that pupils had a better knowledge of prepositions perceptively than productively. It also proved that learners resorted to Swedish when they did not know the correct answer. Many learners fail to recognise prepositions as parts of multiword expressions. By teaching students how to notice grammatical collocations and lexical chunks we can help them to achieve acceptable levels of language proficiency and accuracy