This document discusses the morphological differences between English and Indonesian that cause problems for learners of each language. It analyzes morphological processes, parts of speech, word order, clauses, possession, and complex sentences. The key issues are:
1) Indonesian learners struggle with English morphological replacements and affixations in different parts of speech.
2) English learners have difficulty with Indonesian infixes and the lack of morphological changes in adjectives and adverbs.
3) Both experience problems with the other's rules around word order, clauses, possession, and complex sentences. Mastering these contrastive analyses is important for learning either language effectively.