Except in the first one, I think, which could, given the context. "Because my baby-sitter is my daughter, I can often not pay her." That means I can get away with not doing it, not that I often do pay her.
I am stuck there too. I often cannot open this web site... I often can not get this stupid thing to work. I can not often deal with the dingbats that call my work (that is a BAD sentence). I cannot often make time to do X with my stupid schedule.... that's how I read this...
no subject
Date: 2008-08-07 06:59 pm (UTC)"I can often not-X" means that I can often do a thing with is the opposite of X.
no subject
Date: 2008-08-07 07:10 pm (UTC)no subject
Date: 2008-08-07 07:17 pm (UTC)no subject
Date: 2008-08-07 07:22 pm (UTC)no subject
Date: 2008-08-08 10:50 pm (UTC)that's how I read this...
no subject
Date: 2008-08-07 07:12 pm (UTC)