The document explains the formation and use of the present perfect tense with examples, focusing on adverbs like ever, never, just, already, yet, and still. It outlines four main contexts for using the present perfect: life experiences, recent past actions, present results of past actions, and unfinished past actions connected to the present. Additionally, it discusses the usage of 'for' and 'since' to indicate duration, and addresses the tendency to use the present perfect continuous in regard to the duration of actions.

1. Uses with
-ever/never
-Still/ already & yet
-unfinished past: for and since

2.  We form the Present Perfect with Have/ Has and the past participle
of verbs (3rd column of irregular verbs or –ED for regular verbs.
 -She has broken her arm
 -They haven’t visited Paris
 -Have you seen Emily?

3.  I have / haven’t –(have not)
 You have / haven’t
 He/she/it has / hasn’t
seen the film
 We have / haven’t
 You have / haven’t
 They have / haven’t

4. For these sentences we invert the order of Subject and Auxiliary.
 Have I
 Have you
 Has she
talked about the trip?
 Have we
 Have you
 Have they
--These questions may contain a Question Word at the beginning of
course.
◦ -Where have you been?

5.  A) LIFE EXPERIENCE (EVER-NEVER)-we use this tense to express
things we have done in our life. We can say –never or how many
times-. But we never say when.
 Adverbs EVER and NEVER are used between the auxiliary and the
verb.
 Have you ever seen a UFO?
 Lou has visited Paris twice
 I have been to Tarragona many times.
 They have never come to Barcelona.

6.  B) Recent past- (JUST)
We use Present Perfect with JUST to express an action that happened
very recently, just few minutes ago. It is not often used in questions.
We use “Recently”
Just is placed between the auxiliary and the verb, too.
-We have just finished dinner. We’re clearing
up.
-She has just fallen off her bike. She’s crying.
-They have just married!

7.  C) PRESENT RESULT-(ALREADY & YET/STILL) We also use this tense
to express the present result of past actions. ALREADY is used in
affirmative sentences between the auxiliary and the participle and
YET in questions and negatives at the end of the sentence. STILL is
also used in negatives but before the auxiliary.
 I have already read J.K.Rowling’s new book.
 We still haven’t seen the new film.
 We haven’t seen the new film yet.
 Have you finished your homework yet?

8.  D)Unfinished past- (FOR-SINCE) *An action started in the past but
continuing in the present. Here this tense connects the past and the
present.
 *It is used to say how long an action has been going on and we use
FOR and SINCE with time expressions.
-SINCE- used with a point in time.
2010 today…
-She has worked here since 2010.
-FOR- used with a period of time
2010 today……
-She has worked here for six/seven.. years.

9.  It is true that in this last use of the Present Perfect, English speakers
tend to use the Present Perfect Continous.
 HAVE/ HAS + BEEN + PAST PARTICIPLE
As they are referring to how long, to the duration of the action, then
they would say in these cases:
 She has been working here since 2010 / for
six years.
 I’ve been studying English for ages.
And so we ask:
 How long have you been doing this?
NOTE: remember stative verbs for this use!