The common
idea of tense is often used to cover all forms of the verb in relation to both
form and function and springs from different basic premises. Firstly most
language learners think of verb formation and usage with the obvious
relationship between tense and time. In fact in many languages, such as Spanish
or French, time and tense are synonymous. Secondly, like many concepts in
English grammar – such as avoiding split infinitives for example – the idea of
tense develops from the historical approach of trying to harmonise English
grammar with Latin grammar. This motivated grammarians to look for
corresponding forms between “tenses” and many language learners do the same in
an attempt to understand how English works.
In most
cases, we would normally represent time by means of a timeline concept marking
the past, the present and the future. While time is a universal concept, not
all languages express time in the same manner. Linguists now make a distinction
between tense and aspect. Tense is defined as the “absolute
location of an event or action in time” and is generally marked by
inflection in the form, in other words it can be considered as a grammatical
form, while aspect “refers to how an
event or action is to be viewed with respect to time.” [i]
While we
might be accustomed to think of expressing time according to the past, the
present and the future, it can be said that English only has two tenses –
present tense and past (or non-present) tense since these are the only forms
that show inflection:
John walks to work
– Mary is ill (Present tense)
John walked to work
– Mary was ill (Past tense)
As a general rule the third person
singular of the present tense is inflected –s
(I sing but she sings) and the past
tense is usually formed by the stem + -ed
(talk – talk +ed = talked.) English does not have a future tense in the
sense of having an inflected form, equivalent to the French parlerai or Spanish hablaré but
expresses the future in a variety of ways, such as by using constructions like will + infinitive or be going to + infinitive.
In the case of aspect, it is
generally held that an action can be viewed as progressive (sometimes known as continuous),
perfective or perfect progressive. Since this refers to the manner in which the verb
is viewed or regarded, the question is how to teach this to an English language
student since the differences are often slight, ambiguous or context dependant.
The formation of aspects is as
follows:
The progressive aspect is formed by using the construction to be + verb + -ing : He
is + sleep + -ing = he is sleeping
The perfective aspect is formed by using the construction to have
+ past participle :
He
has + eaten = he has eaten
The perfect progressive aspect is formed by the construction to have
been + verb + -ing :
He
has been + sleep + -ing = he has been sleeping
Both tense and aspect can be combined
in various ways to form the following paradigm:
Simple
|
Progressive
|
Perfective
|
Perfect Progressive
|
|
Present
|
walk
|
am
walking
is
walking
are
walking
|
have walked
has
walked
|
have
been walking
has been
walking
|
Past
|
walked
|
was
walking
were
walking
|
had
walked
|
had been
walking
|
From
the above we can see the variation in verb forms and contrast their various
uses. In general terms, the progressive aspect refers to something which is
still in progress during a temporary period, such as a planned action. The
perfective aspect links two events at different times, one of which is
generally in the past, but the other may still be ongoing.
Thus:
John sleeps soundly (Present simple –
states a general fact, John is not sleeping at this moment in time)
John is sleeping soundly (Present
progressive – the action is ongoing, John is sleeping at this moment in time)
They have lived in Spain for five years
(Present perfective – action started in the past and they are still living
there at the present)
Peter had been walking the dog when he
slipped (Past perfect progressive – he was in the process of walking the
dog when another event took place, his phone rang)
Some
textbooks will make the distinction between the two concepts, tense and aspect,
while others will use the general term “tense” to cover all forms of the verb.
This former option is chosen by Quirk et al in A Grammar of Contemporary English which differentiates between
time, tense and aspect and deals with the simple present and the simple past
together as tenses, before moving on to aspect, while Parrott’s Grammar for English Language Teachers
follows the latter option.
BIBLIOGRAPHY
Parrott,
Martin (2000) Grammar for English
Language Teachers Cambridge University Press
Quirk
et al (1989) A Grammar of Contemporary
English Longman, Essex 18th edition
The
Internet Grammar of English