Bachelor, International Christian University, Tokyo, 1967. Master of Science in Linguistics, Georgetown University, 1971. Doctor of Philosophy in Theoretical Linguistics, Georgetown University, 1975.
Assistant International Christian University, Tokyo, 1967-1969. University fellow Georgetown University, Washington, 1969-1973, assistant, 1973-1974, Nanzan University, Nagoya, Japan, 1973-1974, lecturer Japan, 1974-1983, assistant professor Japan, 1983-1998, professor Japan, since 1998, chair department American studies and English Japan, 1999—2005.
Member American Association for the Advancement of Science, Linguistic Society Japan, Japan Society Information and Communication Research, Society Teaching Japanese Foreign Language, New York Academy of Sciences.
Married Michiko Yamamura (divorced March 1977). Children: Walter, Christopher. Married Noriko Uemura, April 20, 1977.