:up: (Another slip: sentenCe. But a teacher sometimes does his/her job best by focusing on one Big Thing rather than lots of little ones.)
Here's another example of the pres perf cont with 'from':
'I want to complain. I took the morning off to be in for the delivery. I have been waiting by the door from 8.00 until 12.00, and I have to go to work now.'
b
Good grief! I think it must be time for me to retire completely. But thanks, BobK, for the excuse you offered me.
Thanks, too, for your example. Would you agree that this would be said only if the time of utterance is (about) 12.00?
I should note, Guarev, that in your examples and mine,
from implied a
similar meaning to
since, and was therefore usually not acceptable. In Bob K's example,
from is used in the way it is frequent used, paired with
to/till/until; together they note the beginning and end points of a time period. It works with the pres perf cont in BobK's example only because the end point, 12.00, is the present moment. I think. Let's see what BobK thinks.