semantics of the left periphery , 97-138. Berlin: Mouton de Gruyter.
Chao, Yuen-Ren. 1968. A grammar of spoken Chinese . Berkely: University of California Press.
Cheng, Lisa L.-S. 1991. On the typology of Wh-questions . Cambridge, MA: Massachusetts Institute of Technology dissertation.
Cheung, Lawrence. 2007. Negative Wh -construction: Question-hood, negation and implicature. Paper presented at the 4 th International Workshop on Theoretical East Asian Linguistics (TEAL-4), The Hong Kong Polytechnic University, 30 December.
Chomsky, Noam. 1977