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Present perfect tense verbs express actions or conditions that began in the past and continue in the present. They also express past actions that ended at an unspecified time before the present.
The present perfect tense is created with the auxiliary verb
has or have plus a past participle.
She has worked for 3M since 2004.
Ivan and Crystal have known about the problem for a long time.
I have seen the movie six times.
Past Perfect Tense verbs express actions that
began and ended in the past like simple past
tense verbs do. However, the past perfect
tense indicates that an action ended before
another past action.
The past perfect tense is created with
the auxiliary verb had plus a
Theo sold all the jewelry that he had made.
Ivan and Crystal had known about the problem for a long time before they called an electrician.
I had seen the movie six times when I lost the dvd.
Future perfect tense verbs express actions that will have occurred or conditions that will have been at a specific time in the future. They can also express actions that will have occurred or conditions that will have been before another future action or condition.
The future perfect tense is created with the auxiliary verbs
will have plus a past participle.
Raul will have lived in Wisconsin for ten years when he moves back to Kentucky.
By next week, the builders will have finished the renovation.
Next year, she will have been a police officer for twenty five years.
By the time their youngest child is in college, Leticia and Alfie will have been together for thirty years.