Dr. Ariane Macalinga Borlongan earned his Ph.D. in Applied Linguistics in 2011 at age 23 via a competitive accelerated program in De La Salle University (Manila, the Philippines). His dissertation titled ’A Grammar of the Verb in Philippine English’ was supervised by Professor Emerita Ma. Lourdes Bautista and was recognized as Most Outstanding Dissertation by De La Salle University. At present, he is Lecturer in Sociolinguistics at the Tokyo University of Foreign Studies (Japan). He was previously with De La Salle University, Tamagawa University (Tokyo, Japan), and The University of Tokyo (Japan) and also held posts at Nanyang Technological University (Singapore), SEAMEO Regional Language Centre (Singapore), the University of Freiburg (Germany), The University of Malaya (Kuala Lumpur, Malaysia), and Wenzao Ursuline University of Languages (Kaohsiung, Taiwan). He is Fellow of the Royal Society for the Arts (RSA). He was awarded The Br. Andrew Gonzalez FSC Distinguished Professorial Chair in Linguistics and Language Education by the Linguistic Society of the Philippines and De La Salle University in 2019. He edited ‘Philippine English: Development, Structure, and Sociology of English in the Philippines’, to be published by Routledge in 2020, which serves as the handbook of Philippine English and a festschrift in honor of Prof. Bautista. He is Director of the Philippine component of the International Corpus of English (ICE-PH) and is also the compiler of the Philippine parallels to the Brown and the Before-Brown corpora (Phil-Brown and PBB respectively) and the Diachronic Corpora of Expanding Circle Englishes (DCECE) and co-compiler to the Malaysian parallel to the Brown Corpus (Mal-Brown). He led the development of the Migrant Linguistic Index (MLI), which measures a migrant’s propensity for acquiring, learning, and using language(s) in his/her host country. His teaching and research have focused on sociolinguistics, migration linguistics, world Englishes, English linguistics, and historical linguistics.