present perfect continuous ( note spelling) = have/has +been + -ing verb
have been waiting / has been sitting / have been talking / has been expecting
past perfect continuous = had + been + ing verb
had been waiting / had been sitting / had been expecting.
-ing verb is called a present participle
The future perfect tense follows this formula: Subject + Will + Have + Past Participle For example: I + Will + Have + Done my homework by then.
The present perfect tense.
The past perfect tense follows this structure:Subject + Auxiliary Verb "have" (had) + Past Participlee.g. I had finished my homework.
The present perfect tense follows this structure: Subject + have/has + past participle. For example: I have watched. She has watched.
The formula for the present perfect tense is: has/have + past participle. To make it negative, add the adverb not.Examples:I have not walkedWe have not walkedYou have not walkedHe/she has not walkedThey have not walked
The future perfect tense follows this formula: Subject + Will + Have + Past Participle For example: I + Will + Have + Done my homework by then.
The present perfect tense.
Past tense
The past perfect tense follows this structure:Subject + Auxiliary Verb "have" (had) + Past Participlee.g. I had finished my homework.
The present perfect tense follows this structure: Subject + have/has + past participle. For example: I have watched. She has watched.
"Has been" is a present perfect tense verb form. It indicates an action that started in the past and continues into the present.
The verb in the given sentence, "have understood", is in its present perfect tense. The sentence itself does not have tense, which is a property of verbs only.
The present perfect tense of "forgive" is "have forgiven" or "has forgiven." This tense indicates that the action of forgiving has been completed in the recent past or continues to have an effect on the present moment.
The present perfect tense is used for an action that began in the past and that continues into the present. For example, "We have lived in the same house since 1997." is a sentence in the present perfect tense. "I have always liked chocolate." is the present perfect tense.
"Has been" is a present perfect tense verb phrase. It is used to indicate an action that started in the past and continues up to the present, or has just ended.
present tense past tense future tense present perfect tense past perfect tense future perfect tense present progressive tense past progressive tense future progressive tense present perfect progressive tense past perfect progressive tense future perfect progressive tense
Past perfect tense - I had dug. Present perfect tense - I have dug. Future perfect tense - I will have dug.