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In grammar, a future tense is a verb form that generally marks the event described by the verb as not having happened yet, but expected to happen in the future. An example of a future tense form is the French ''aimera'', meaning "will love", derived from the verb ''aimer'' ("love"). English does not have a future tense formed by verb inflection in this way, although it has a number of ways to express the future, particularly the construction with the auxiliary verb ''will'' or ''shall'' or ''is/am/are going to'' and grammarians differ in whether they describe such constructions as representing a future tense in English, one and all. The "future" expressed by the future tense usually means the future relative to the moment of speaking, although in contexts where relative tense is used it may mean the future relative to some other point in time under consideration. Future tense can be denoted by the glossing abbreviation . ==Expressions== The nature of the future, necessarily uncertain and at varying distances ahead, means that the speaker may refer to future events with the modality either of probability (what the speaker expects to happen) or intent (what the speaker plans to make happen).〔Östen Dahl, ''Tense and Aspect Systems'', Blackwell, 1985, pp. 105-106.〕 Whether future expression is realis or irrealis depends not so much on an objective ontological notion of future reality, but rather on the degree of the speaker's conviction that the event will in fact come about.〔 In many languages there is no grammatical (morphological or syntactic) indication of future tense. Future meaning is supplied by the context, with the use of temporal adverbs such as "later", "next year", etc. Such adverbs (in particular words meaning "tomorrow" and "then") sometimes develop into grammaticalized future tense markers. (A tense used to refer specifically to occurrences taking place on the following day is called a crastinal tense.) In other languages, mostly of European origin, specific markers indicate futurity. These structures constitute a ''future tense''. In many cases, an auxiliary verb is used, as in English, where futurity is often indicated by the modal auxiliary ''will'' (or ''shall''). However, some languages combine such an auxiliary with the main verb to produce a simple (one-word, morphological) future tense. This is the origin of the future tense in Western Romance languages like French and Italian (see below). A given language may have more than one way to express futurity. English, for example, often refers to future events using present tense forms or other structures such as the ''going-to'' future, besides the canonical form with ''will/shall''. In addition, the verb forms used for the future tense can also be used to express other types of meaning; English again provides examples of this (see English modal verbs for the various meanings that both ''will'' and ''shall'' can have besides simply expressing futurity). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Future tense」の詳細全文を読む スポンサード リンク
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