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Wed 22 Feb, 2012 09:24 pm
John started writing a French book at 7:00 this morning. It is now 4:00 in the afternoon and he is still writing it.
@surei,
John has been writing a French book since 7:00 this morning.
What "phrase" are you talking about?
I see two complete sentences.
If you want to combine the two thoughts into one that's present perfect continuous, it could be:
John has been writing in French for nine continuous hours.