.- I l'W3CN 1 I'CKTEC; 1 I'KUtiWSSlVC VS.
PRESENT PERFECT
PRESENT PERFECT PROGRESSIVE
(a) Rita and Josh are talking on the phone.
They have been talking on the phone for
twenty minutes.
PRESENT PERFECT
(b).. Rita has talked to Tosh on the hone many times
(before now).
(c) INCORRECT: Rita has been talking to Josh on the
phae many times.
(d) Rita has known Josh for two years.
(e) nvcoRRBcT: Rita has been knavittg Josh for two years.
(f) I how been h'&g here for six months. OR
(g) I haw Hued here for six months.
- Al haa been wering glasses since he was
ten. OR
Al has worn glasses since he was ten.
(i) I've bson going to school ever since I was five
years old. OR
I've gone to school ever since I was five years old.
The PRESENT PBRFBCT PROGRESSIVE expresses the
duration of prescnt activities rhat a& in
progress, using action verbs, as in (a).
--
The PRESENT PERFECT expresses
(1) repeated activities that occur at unspecined
times in the past, as in @), or(2) the duration of present situations, as in
(d), using non-action verbs.
For some (not all) verbs, duration can be
expressed by either the present perfect or the
present perfect progressive. (f) and (g) have
essentially the same meaning, and both are
correct.
Ofien either tense can be used with verbs that
express the duration of usual or habitual
activities/situations (things that happen daily or
regularly), e.g., live, wark, teach, smoke, wear glass@
play chess, go w school, wad the same newspaper
every morning, ex.EXERCISE 25. Present perfect vs, the present perfect progresslve. (Chart 4-7)
Directions: Complete the sentences. Use the present perfect or the present perfect
progressive. In some sentences, either form is possible.- A: I'm tired. We (walk) have bee* wakh_s for more than an hour.
Let's stop and rest for a while. .-,~,>;!
B: Okay. .'. , , ' Ti <, - A: Is the post office far from here? ,. /. ; , ', ., I .I , ,..
,..,
B: Not at all. I (walk) have ,keA ; $> > there many times.