In
linguistics
Linguistics is the scientific study of language. The areas of linguistic analysis are syntax (rules governing the structure of sentences), semantics (meaning), Morphology (linguistics), morphology (structure of words), phonetics (speech sounds ...
, the prospective aspect (
abbreviated or ) is a
grammatical aspect
In linguistics, aspect is a grammatical category that expresses how a verbal action, event, or state, extends over time. For instance, perfective aspect is used in referring to an event conceived as bounded and unitary, without reference t ...
describing an event that occurs subsequent to a given reference time.
[Matthews, P. H. (1997) The Concise Oxford Dictionary of Linguistics. Oxford: Oxford University Press.] One way to view tenses in English and many other languages is as a combination of a reference time (past, present, or future) in which a situation takes place, and the time of a particular event relative to the reference time (before, at, or after). As an example, consider the following sentence:
*When I got home yesterday, John called and said he would arrive soon.
The verb ''would arrive'' expresses a combination of past reference time (the situation of my getting home, established as being in the past by the introductory clause) and an event (John's arrival) whose time of occurrence is subsequent to the reference time. Technically, this verb is said to be ''past tense, prospective aspect'', with the
tense expressing the time of the overall situation and the
aspect expressing how the event itself is viewed, relative to the vantage point of the overall situation.
In English, the prospective aspect is most clearly distinguished in the past. The English
future tense expressed by the
auxiliary verb ''will'' refers to an event in the absolute future, regardless of the reference time or relative time of the event:
*Whenever I get home, John usually calls and says he will arrive soon (''present reference, prospective event'').
*When I get home tomorrow, John will arrive and meet me (''future reference, simultaneous event'').
*When I get home tomorrow, John will probably call and say he will arrive soon (''future reference, prospective event'').
*When I got home yesterday, John called and said he will arrive in three weeks (''past reference, prospective event in the absolute future'').
Note in particular the last sentence, with the same combination of tense and aspect as ''would arrive'' in the first sentence above, but with an emphasis on a time occurring in the absolute future (i.e. after the present time, rather than simply after the time of the situation being described).
However, in English it is possible to express the prospective aspect in tenses other than the past using the so-called ''
going-to future
The ''going-to'' future is a grammatical construction used in English to refer to various types of future occurrences. It is made using appropriate forms of the expression ''to be going to''.Fleischman, Suzanne, ''The Future in Thought and Lan ...
'': "He says he's going to finish soon. But yesterday he was also going to finish soon, and I'm sure in five weeks he'll still be going to finish soon."
The opposite of the prospective aspect is the ''
retrospective aspect'', more commonly known as the "perfect":
*When I got home yesterday, John had already arrived (''past reference, retrospective event'', also known as ''past perfect'' or ''
pluperfect'').
It is actually possible to combine prospective and retrospective (perfect) aspects to produce a "prospective perfect", especially in the past:
*Don't wait a week; John will have already left (''future reference, perfect aspect'' or ''present reference, prospective perfect aspect'').
*I told him not to wait a week; John would have already left (unambiguously ''past reference, prospective perfect aspect'').
*I ''was going to have left'' by then, but got distracted (''past reference, prospective perfect aspect'').
See also
*
Future in the past
References
{{Grammatical aspects
Grammatical aspects