Prepositions and the acquisition of English prepositions English prepositions are notoriously difficult to learn, and even ESL/EFL students with high level of English proficiency have difficulty with the use of prepositions (Celce-Murcia & Larsen-Freeman, 1999). According to Celce-Murcia and Larsen-Freeman, a reason for this difficulty is that prepositions do not always match up well from one language to another. For Thai students, English prepositions can be especially difficult because there are many instances where a preposition is needed in English when it is not needed in Thai.
In other cases, a preposition is needed in English, but in Thai a different part of speech is needed