12/01/2021
The Present Perfect Tense refers to actions or periods.of time that have lasted from some time in the past up to now ( up to the time of speaking or writing); and to actions that have just ended. Use HAVE or HAS a past participle.
The Present Perfect Tense
(a) I HAVE just SEEN a lion. ( = just now)
(b) Have you ever seen a lion ? ( = ever up to now )
(c) Ben HAS never SEEN a lion. ( = never up to now)
(d) We have seen ten lions this week. ( = up to now)
(e) HAVE you DONE your homework? ( = already up to now)
(f) I have not yet done mine. ( = not yet up to now)
(g) We HAVE BEEN there twice since Sunday. ( = from Sunday up to now)
The Present Perfect Continuous
This tense is used to emphasize the fact that actions that have lasted up to now are still continuing. Use HAVE BEEN or HAS BEEN and a present participle
(a) I HAVE BEEN WAITING for an hour already ( and I am still waiting).
(b) He HAS BEEN PESTERING us for days ( and he is still pestering us).
The Past Perfect Tense
This tense is used for actions that had ended before some other actions in the past commenced.
(a) He ran away after he HAD BROKEN the window. ( Use had and a past participle)
(b) She asked him what he HAD DONE the night before
The Past Perfect Continuous
This tense stresses continuance of action that had already lasted up to a certain point of time in the This tense stresses continuance of action that had already lasted up to a certain point of time in the past.
(a) It HAD BEEN RAINING for days when the dam burst. ( Use HAD BEEN and a present participle)
(b) When I saw him at the bus stop he told me that he HAD BEEN WAITING for half an hour ( and he was still waiting).
THIS IS THE END OF TENSES.