The Syntax of Tenselessnessis an in-depth investigation of verb-verb agreement phenomena in Swedish, including pseudocoordinations of the formJohn started and wrote'John started writing' and double participles of the formJohn had been-able written'John had been able to write'. The claim is that the relevant constructions involve (disguised) infinitivals that agree with the matrix clause in tense/mood/aspect, a surface reflex of restructuring. The book is an important contribution to the syntax of infinitivals, restructuring, and agreement in natural language.