In this paper, we show how the problem of accounting for the semanticsof temporal preposition phrases (tPPs) leads us to some surprisinginsights into the semantics of temporal expressions ingeneral. Specifically, we argue that a systematic treatment of EnglishtPPs is greatly facilitated if we endow our meaning assignments with context variables, a device which allows a tPP to restrict domainsof quantification arising elsewhere in a sentence. We observe that theuse of context variables implies that tPPs can modify expressions intwo ways, and (...) we use this observation to predict the behaviour of tPPswhose complements are themselves modified by other tPPs. (shrink)

Ich verteidige in diesem Aufsatz die These, daß die Kernbedeutung des deutschen Perfekts ein Extended Now im Sinne von McCoard (1978) ist. Es handelt sich dabei um ein Intervall, das die Referenzzeit r als rechte Grenze hat und in eine kontextuell oder lexikalisch begrenzte Vergangenheit reicht. r selbst gehört mit zum Intervall. Ich nenne dieses Intervall XNP(r). Für das Futur ist ein analoges Intervall anzunehmen, welches die Referenzzeit als linke Grenze hat, in die Zukunft reicht und das XNF(r) genannt wird. (...) Auch hier gehört r mit zum Intervall. (shrink)

The meanings of temporal adverbials seem easy to describe, but the compositional interaction with tense and aspect is notoriously difficult to analyse because we (more accurately: I) do not understand yet the principles governing the tense/aspect architecture of natural languages well enough. One of the most difficult areas of temporal structure is the perfect, and the literature quoted in this article shows that there is little agreement on its meaning(s). I believe that we will make progress only by a careful (...) investigation of the meanings of temporal adverbials and by stating their formal semantics in a way which is precise enough to test empirical predictions. This is what the present article wants to do. It studies the interaction of the German durative temporal PP seit a ‘since a’ with tense, in particular with the perfect. (shrink)