Consider the following almost synonymous sentences:
1) He has been in the corner for over an hour.
2) He has been standing in the corner for over an hour.
Broman Olsen analyses 1) and 2) as "present perfect progressive,"
which means that it is a combination of the imperfective and
perfective aspects - and I agree. First E is intersected by R at the
nucleus, and then at the coda. A clause in present perfective
progressive cannot be compared with a perfect clause.
In order to find examples where the perfective aspect portrays
actions that are ongoing, and where the end is not reached, you can
only use the perfect participle - he has stood.
Also consider the following:
1) I have gone for a long time (doesn't make sense)
2) I have been gone for a long time (now makes sense)
3) I have known this for a long time (unlike sentence 1 this makes sense)
Where is the intersection of E by R in 3)?
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