]english phrasal verbs and how to study them effectivelly Abstract In studying a foreign language, learners could not pay attention to only its pronunciation, vocabulary but also its grammar. The learners, in fact, have to meet grammatical problem very much such as: tense, adjective, adverb especially phrasal verbs. The correct use of phrasal verbs is complex and difficult problem in English grammar. It requires learners to have a very good knowledge of verbs and how to use them effectively. Therefore, in my study, I describe research to phrasal verbs in English and how to study them effectively. I present definition, some ways to use phrasal verbs better. Outline of the report I. Introduction II. Aims III. Procedure IV. Findings 1. Definitions of phrasal verbs 2. Classification of phrasal verbs 3. How to study English phrasal verbs effectively V. Analysis and Interpretation 1. Definitions of phrasal verbs 1.1. According to Tom McArthur 1.2. According to Dictionary.com Unabridged 2. Classification of phrasal verbs 2.1. Intransitive phrasal verbs 2.2. Transitive phrasal verbs 3. How to study English phrasal verbs effectively 3.1. Studying phrasal verbs through combination of the verbs with particles/ prepositions 3.2. Studying phrasal verbs through pairs of antonym 3.3. Studying phrasal verbs through topic VI. Conclusion VII. Recommendation Reference I. INTRODUCTION Together with the development of information industry, English, nowadays, has become more and more dominant in every continent. In Vietnam, English has an important position in many fields such as information and technology, science, economy and even political system. In English as well as in other languages, Grammar plays an important role, it will help learners listen, speak, read, write English correctly. However, Grammar is not always simple. During the time studying English at university, I personally realize that Phrasal verbs are one of the most difficult parts in English grammar. A Phrasal verbs is a phrase consisting of a verb and either or both a preposition or adverb, that has idiomatic meaning. Moreover, the complex structure of phrasal verbs sometimes also makes learners confused. Thus, though this study I will help learners understand more about phrasal verbs and use it more effective.