what do indonesian students learn about errors in their english sentences?

Indonesian students find it difficult to organize words into correct sentences when learning English as their first foreign language. Their native language interferes with when they want to learn the English language. Some students in Indonesia do not have enough vocabularies to construct sentences.Then, some students in Indonesia do not have enough vocabularies when they want to construct a sentence. some students still don't understand the parts of sentence properly. Richard (1971b) in Ellis (1974) said there are several sources of errors such as interference errors, Intralingual errors and Developmental errors. It is these three sources of error that cause some students to experience difficulties in constructing a sentence. This was proved by the research that has been done by Ariani (2015) on an analysis of students’ difficulties in constructing English sentences and Rahayu (2011) about “Error analysis on English Sentences”.