This research is based on the phenomena of English WH question use. English WH question or WH word has significant difference with Indonesian WH question, it causes many students get difficulties in using WH question. The interference in using an L2 is mainly caused by the differences between the L1 and the L2, which comprises the differences in phonological and grammatical systems as well as the lexical and cultural systems.
The problem of this research can be stated as follows:
1. What are the differences and the similarities between English and Indonesian WH Questions?
2. What factors make differences between English and Indonesian WH Questions?
The objective of this research is (1) To find out the differences and similarities between English and Indonesian WH Questions. (2) To find out the factors make differences between English and Indonesian WH Questions. This research focuses on the differences and similarities between English and Indonesian WH Questions. This research is basically library research, where the writer attempts to obtain the data from the books as the data sources. In doing this research, the writer uses contrastive analysis. This kind of analysis describes the comparison of two or more languages in order to identify both similarities and differences. The analysis is carried out in two steps. The first is a contrastive analysis between English Indonesian questions word, and the second is a contrastive analysis of the pattern between English Indonesian question sentences. (1) from the result of finding and discussion, the difference of English and Indonesian WH question are as follow : (a)Split of meaning. (b)Coalescence in meaning (Indonesian WH Questions that has more than one similarities meaning with English WH Question). (c)Split in Sentence Structure. (2)Factors which make differences between English and Indonesian WH Question are the pattern of WH questions and its meaning.