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.