The purpose of this paper is to argue that we need to posit two distinct types of derivation for sluicing in Mandarin Chinse: one is a wh-movement and deletion analysis proposed by Wang and Wu’s (2006) and the other is a null pro-form analysis proposed by Wei’s (2011). I will show that a given sluicing in Mandarin Chinese will be grammatical if there is at least one way of deriving it which satisfies all relevant conditions, whereas it will be ungrammatical if neither of the two derivations yield a convergent outcome.
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