Ellipsis occurs when certain portions of a sentence are not spoken - for example 'Mary has read more books than Bill has [read books]' and 'Jack called, but I don't know where [he called] from'. These constructions interest linguists because the meaning of the sentence cannot be traced directly to the words it contains. This volume brings together a team of leading syntacticians to propose new and original solutions to some key questions in the study of ellipsis: What characterizes ellipsis? Under what conditions is it possible? What kinds of meanings are allowed to go unspoken? Drawing on a variety of authentic constructions, they examine ellipsis in the context of a range of syntactic phenomena such as binding, raising, anaphora, movement and scrambling. Making significant progress towards solving some central problems in syntactic theory, this cutting-edge volume will be of key interest to anyone working on theoretical syntax, semantics and psycholinguistics.