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English has two true tenses, past and present (sometimes analysed as non-past). These are distinguished by the inflection of the verb, by either ablaut or a suffix -ed (walks ~ walked, sings ~ sang). The future is expressed with a modal construction, which is not a true tense,[6]and does not always appear (it is optional in subordinate constructions such as I hope you (will) go tomorrow, and is prohibited with other modals as in I can go tomorrow, but past tense cannot be similarly omitted: *I hope you go yesterday, *I can go yesterday). English also has so-called "compound tenses", such as the past perfect and present progressive, which use modals to combine tense with other grammatical categories such as aspect. Tense, aspect, and modals in EnglishTenseModalAspect PerfectProgressive -Ø (nonpast)
-ed (past) | Ø (none)
will (future) | Ø (none)
have -en (perfect) | Ø (none)
be -ing (progressive) | go, goes
went | will go | have gone | be going | Traditional grammars often considered will to be a future marker and described English as having two non-inflected tenses, a future marked bywill and a future-in-past marked by would.
source: http://en.wikipedia.org/wiki/Grammatical_tense
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fortuneteller   
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12 มี.ค. 55 11:42:49
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be going to/will/shall ถามค่ะ
