Yiwei Si

Hello! My name is Yiwei Si. I hold a DPhil (PhD) in Linguistics from the Faculty of Linguistics, Philology and Phonetics at the University of Oxford. My doctoral research was supported by both the Clarendon Scholarship and the Hanseatic Scholarship. As part of the Hanseatic Scholarship, I was a visiting researcher at the Leibniz-Centre General Linguistics (ZAS) in Berlin from 2025 to 2026.

My main research interest lies in morphology and its interfaces with phonology, syntax, and semantics. My DPhil thesis examines German verbal particles through two of their least understood subclasses, aspectual particles and double particles, both of which involve a mismatch between morphological form and grammatical representation. For aspectual particles, it proposes a classification into inceptive and egressive types and develops a syntactic account of particle polysemy. For double particles, it presents an EEG experiment comparing the processing of double particle verbs with that of single particle and prefix verbs. I’m additionally interested in syntax, psycholinguistics and first language acquisition.

Before starting my PhD, I completed an MPhil in Linguistics at Oxford in 2022. I earned my Bachelor’s degree in German Studies from Beijing Foreign Studies University in China.

Outside of linguistics, I enjoy exploring local restaurants, practicing yoga, playing tennis, and travelling.