I have been wondering about that myself! (That's the answer by the way)
The adjective form of the abstract noun 'wonder' is wonderful.The adjective form of the verb to wonder is the present participle, wondering.
As it does not have a third form (A Past Particle) we must replace CAN with TO BE ABLE TO. Therefore, the Present Perfect of CAN is HAS/HAVE BEEN ABLE TO.
The present perfect is has/have + a past participle.I have seen that movie already.She has seen that movie, too.
The third form of the verb "be" is "been." It is used in perfect tenses, such as "has been" or "have been," to indicate a state or condition that started in the past and continues to the present.
Past perfect is formed with - had + past participle.In the sentence - I had some dates - had is the past form of have and had is also the past participle of haveSo your sentence in past perfect would be - I had had some dates.In present perfect - I have had some dates.Using another verb (not have) - I had eatensome dates. I had been to London.
The present perfect progressive form of "sleep" is "has/have been sleeping."
The present perfect progressive form of "discuss" is "have been discussing."
To form a progressive tense use the helping verb to beand the present participle (the -ing form of the verb)Progressives can be in the present past and future and can also be perfectpresent progressive I am workingpast progressive I was workingfuture progressive I will be workingPerfect progressivespresent perfect progressive I have beenworkingpast perfect progressive I had been workingfuture perfect progressive I will have beenworkingFe Maria Finch BA English
Present ProgressiveI + Am + Present ParticipleYou/we/they + Are + Present ParticipleShe/he/it + Is + Present ParticiplePresent Perfect ProgressiveHave/Has + Been + Present ParticiplePast ProgressiveWas/Were + Present ParticiplePast Perfect ProgressiveHad + Been + Present ParticipleFuture ProgressiveWill + Be + Present ParticipleFuture Perfect ProgressiveWill + Have + Been + Present ParticipleNote: the progressive tense is often called the 'continuous tense'.
The progressive tense has the form - be + present participle.eg is/was watching.The tense of the be verb determines the tense of the progressive verb form.eg was watching is past progressive. is watching is present progressive.With an auxiliary verb have or has the present perfect progressive is formed.eg have been watching, has been watchingWith had the past perfect progressive is formed:eg had been watching
It has auxiliary verbs before present participle (-ing form of a verb).Examples with jumping as the present participle:The past perfect progressive is formed with had + been + jumping. I/we/you/he/she/it had been jumping.The present perfect progressive is formed with has/have + been + jumping. I/we/you/they have been jumping, he/she has been jumping.The future perfect progressive is formed with will + have + been + jumping. I/we/you/he/she/they will have been jumping.
Every verb has a past, present, and future tense. Each past, present, and future tense also has a perfect form, progressive (continuous) form, and a perfect continuous form.
The present perfect progressive form is have been makingand has been making.They have been making a racket. (plural subject)She has been making dinner. (singular subject)
There are three perfect progressive tenses: progressive past perfect for actions that were continually performed in the past but have not continued to the present; progressive present perfect for actions that have continued from the past into the present; and progressive future perfect for actions that are expected to continue at some time in the future but will come to a definite end. Example of progressive past perfect: He had been complaining constantly until he was given some ice cream. Example of progressive present perfect: He has been complaining constantly since early this afternoon. Example of progressive future perfect: I think he will have been complaining constantly from lunch time until supper time about how small his dessert at lunch was.
"Awake" is an adjective, so it has no present progressive form. However, the verb "to awaken" does have a present progressive form which is "am/is/are awakening".
To conjugate the progressive tenses, conjugate only the part of the tense phrase that is part of the conjugation the verb "to be" and add to that the present participle of the principal verb. Example with principal verb "go": "I am going, I was going, I have been going, I had been going" for the first person singular present, past, present perfect, and past perfect tenses respectively.
Formally, the present perfect tense is formed by combining a suitable present indicative form of "to have" (has or have, depending on number) with a past participle of some substantive verb, while a present perfect progressive tense combines a present indicative form of "to have" with "been" (the past participle of "to be") and a present particle of a substantive verb. Substantively, a present perfect tense shows that the action of a substantive verb has been completed at the time the tense is written, while a present perfect progressive tense indicates that the action of the substantive verb is still in process. For example, "The temperature has changed substantially" implies that the change is at least temporarily complete, while "The temperature has been changing substantially" implies that some change has already occurred and that further change is likely.