TENSES
PRESENT
PERFECT
1.
Present perfect - form
The present
perfect of any verb is composed of two elements : the appropriate form
of the auxiliary verb to have (present tense), plus the
past participle of the main verb. The past participle of a regular verb
is base+ed, e.g. played, arrived, looked. For irregular
verbs, see the Table of irregular verbs.
Affirmative
|
|
|
Subject
|
to have
|
past participle
|
She
|
has
|
visited
|
Negative
|
|
|
Subject
|
to have +
not
|
past participle
|
She
|
hasn't
|
visited
|
Interrogative
|
|
|
to have
|
subject
|
past participle
|
Has
|
she
|
visited..?
|
Interrogative
negative |
to
have + not |
subject
|
past
participle |
Hasn't
|
she
|
visited...?
|
Example:
to
walk, present perfect
Affirmative
|
Negative
|
Interrogative
|
I
have walked
|
I haven't
walked
|
Have I walked?
|
You have
walked
|
You haven't
walked
|
Have you
walked?
|
He, she,
it has walked
|
He, she,
it hasn't walked
|
Has he,she,it
walked
|
We
have walked
|
We haven't
walked
|
Have we walked?
|
You
have walked
|
You haven't
walked
|
Have you
walked?
|
They
have walked
|
They haven't
walked
|
Have they
walked?
|
2.
Present perfect, function
The Present
Perfect is used to indicate a link between the present and the past.
The time of the action is before now but not specified, and we
are often more interested in the result than in the action itself.
BE
CAREFUL!
There may be a verb tense in your language with a similar form, but
the meaning is probably NOT the same.
The present perfect
is used to describe:
1.An action or
situation that started in the past and continues in the present. Example:
I have lived in Bristol since 1984 (= and I still do.)
2. An action performed during a period that has not yet finished. Example:
She has been to the cinema
twice this week (= and the week isn't over yet.)
3. A repeated action in an unspecified period between the past and now.
Example: We have visited Portugal
several times.
4. An action that was completed in the very recent past,
(expressed by 'just'). Example: I have
just finished my work.
5. An
action when the time is not important. Example: He has
read 'War and Peace'. (the result of his
reading is important)
Note: When
we want to give or ask details about when, where, who, we use
the simple past.Example: He read
'War and Peace' last week.
Examples:
1. Actions started
in the past and continuing in the present.
a. They haven't lived here
for years.
b. She has worked in the
bank for five years.
c. We have had the same car
for ten years.
d. Have you played the piano
since you were a child?
2. When the
time period referred to has not finished.
a. I have worked hard
this week.
b. It has rained
a lot this year.
c. We haven't seen her today.
3. Actions
repeated in an unspecified period between the past and now.
a. They have seen that
film six times.
b. It has happened
several times already.
c. She has visited them frequently.
d. We have eaten at that
restaurant many times.
4. Actions completed in the very recent past (+just).
a. Have you just finished
work?
b. I have just eaten.
c. We have just seen her.
d. Has he just left?
5. When the precise time of the action is not important or
not known.
a. Someone has eaten
my soup!
b. Have you seen 'Gone with
the Wind'?
c. She's studied Japanese,
Russian and English.