Tense
Since the work of Hans Reichenbach (
Elements) tense logicians and linguists have visualized the three time frames of an event in terms of a model showing the relationship between the time of the utterance (speech time), the time about which the utterance is predicated (reference time), and the time of the event or situation itself (event time). Reichenbach proposed depicting “the three-place structure of time determination given in the tenses” (
Elements, 290) in terms of the initials S, R, and E (for speech, reference, and event) on a time line. This depiction is referred to as the “event model.” To illustrate how the event model works, I will use some English examples. if I say today, “At noon yesterday I had already eaten,” the speech time (S) is today, the reference time (R) is noon yesterday, and the event time (E), the eating, must have occurred some time prior to noon yesterday.
Reference and Speech Time.png
English does not encode the E:S relationship; it encodes the R:S relationship using the past, present and future tenses, and the R:E relationship by the auxiliaries “have” and “be going to.” Thus, without considering the “extended tenses,” the nine combinations of the R:S relation and the E:R relation can be tabulated as follows:
RS and ER combinations in English.png
Absolute tense is the traditional name for tenses that have the present moment as their reference point (Comrie,
Tense, 36), i.e., the point about which something is predicated. Absolute tense is simply the temporal relation between the moment of speech (S) and the moment of the event (E). If E precedes S, the absolute tense is past; if E follows S, the absolute tense is future; and if E and S exactly coincide, the absolute tense is present.
Relative tense relates the time of the event not to speech time (S), but to the reference time (R). To contrast absolute tense and relative tense, absolute tense “should be interpreted to mean a tense which includes as part of its meaning the present moment as deictic centre; whereas relative tense refers to a tense which does not include as part of its meaning the present moment as deictic centre” (Comrie,
Tense, 36). “The reference point for a relative tense is given by the context (and perhaps, by default in the absence of any other contextual indication, taken to be the present moment)” (Comrie,
Tense, 125). Again, there are three temporal relations possible between E and R; these are relative past (or anterior), relative present, and relative future (or posterior).