How many verb tenses are there in English? - Anna Ananichuk

881,911 views ・ 2017-11-06

TED-Ed


Please double-click on the English subtitles below to play the video.

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Grammatical tense is how languages talk about time
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without explicitly naming time periods
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by, instead, modifying verbs to specify when action occurs.
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So how many different tenses are there in a language like English?
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At first, the answer seems obvious:
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there's past,
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present,
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and future.
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But thanks to something called grammatical aspect,
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each of those time periods actually divides further.
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There are four kinds of aspect.
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In the continuous or progressive aspect,
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the actions are still happening at the time of reference.
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The perfect aspect describes actions that are finished.
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The perfect progressive aspect is a combination,
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describing a completed part of a continuous action.
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And finally, there's the simple aspect,
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the basic form of the past, present, and future tense,
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where an action is not specified as continuous or discrete.
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That's all a little hard to follow, so let's see how it works in action.
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Let's say your friends tell you they went on a secret naval mission
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to collect evidence of a mysterious sea creature.
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The tense sets the overall frame of reference in the past,
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but within that, there are many options.
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Your friends might say a creature attacked their boat,
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that's the past simple, the most general aspect,
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which gives no further clarification.
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They were sleeping when it happened,
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a continuous process underway at that point.
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They might also tell you they had departed from Nantucket
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to describe an action completed even earlier.
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That's an example of the past perfect.
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Or that they had been sailing for three weeks,
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something that was ongoing up until that point.
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In the present, they tell you that they still search for the creature today,
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their present simple activity.
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Perhaps they are preparing for their next mission continuously as they speak.
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And they have built a special submarine for it, a completed achievement.
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Plus, if they have been researching possible sightings of the creature,
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it's something they've been doing for a while and are still doing now
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making it present perfect progressive.
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So what does this next mission hold?
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You know it still hasn't happened because they will depart next week,
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the future simple.
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Your friends will be searching for the elusive creature,
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an extended continuous undertaking.
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They tell you the submarine will have reached uncharted depths a month from now.
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That's a confident prediction
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about what will be achieved by a specific point in the future,
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a point at which they will have been voyaging for three weeks
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in the future perfect progressive.
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The key insight to all these different tenses
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is that each sentence takes place in a specific moment,
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whether it's past, present, or future.
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The point of aspects is that they tell you as of that moment
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the status of the action.
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In total, they give us twelve possibilities in English.
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What about other languages?
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Some, like French,
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Swahili,
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and Russian take a similar approach to English.
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Others describe and divide time differently.
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Some have fewer grammatical tenses, like Japanese,
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which only distinguishes past from non-past,
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Buli and Tukang Basi,
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which only distinguish future from non-future,
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and Mandarin Chinese with no verb tenses at all, only aspect.
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On the other hand, languages like Yagwa split past tense into multiple degrees,
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like whether something happened hours, weeks, or years ago.
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In others, tenses are intertwined with moods that can convey urgency,
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necessity,
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or probability of events.
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This makes translation difficult but not impossible.
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Speakers of most languages without certain tenses can express the same ideas
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with auxiliary words, like would or did,
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or by specifying the time they mean.
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Are the variations from language to language
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just differents ways of describing the same fundamental reality?
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Or do their diverse structures reflect different ways of thinking about the world
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and even time itself?
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And if so, what other ways of conceiving time may be out there?
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