oh lougle, it is so hard, isn't it?
without dd1's excellent home/school book, and the pages of notes that come back each day, I wouldn't know half the stuff she does.
what we tried, and it took a while but is now very successful, is to implement an extra bedtime story - we tell them (well, now they tell us!) the story of "2 little girls" (who happen to have the same names as the dds
) and what they got up to during thier day.
we started it on holiday last year, as a way to introduce dd1 to what was going to be happening the next day - a sort of verbal social story, I guess.
she liked it, but didn't really join in straight away.
it evolved into being the story of what they had done during the day, and has been briliant for working on time-related langugae too 
to begin with, dd1 jsut listened, and dd2 would tell us lots, but now it's the other way around, really. I have a film of it somewhere - I'll dig it out and post it.
so, we would start off, and tell the girls everything they had done - got up, eaten breakfast, etc etc, and gradually throw in a question - what shop did we go to? what did we buy?after breakfast who helped mummy? etc
we got some really off-the-wall responses form dd1 initially, and it was fascinating to see what she found important from the days' events.
but now, she will (usually) tell me pretty much what has happned during the day (with particular emphasis on what she has eaten
). I do still need ot ask leading questions, eg who did you go horse-riding with?, what did you do after lunch?, but I get a fairly complete picture of the day most days.
hang on, will dig around for the film I have of her.