Do you know this:
X-bar theory - Wikipedia, the free encyclopedia
It's all quite interesting. One thing that appears certain is that we are working from different "authoritative texts". I think we would all refer to Reed-Kellogg, but the text that I use is "Descriptive English Grammar" Second Edition, by Harman and House 1931.
I have yet to see a sentence that cannot be diagrammed using that text.
If anyone is interested, I would be happy to email them a reduction of that text which my students wrote when I taught this material 15 years ago.
What other authoritative texts are being used?
PS. Yes, this is quite fun to correspond with other "syntacticians".
I can barely understand Reed-Kellogg LET ALONE X-bar theory!
Perhaps you should let me send you my student's reduction of the book. It is made very simple -- and yet is complete.
I just looked at x-bar theory and then saw that it referred to Chomsky's work.
I have tried to understand Chomksy -- his idea is tantalizing, but I think the world-wide interest in his work is one of the reasons that Reed-Kellogg has tended to be abandoned.
As I have mentioned (I think), my students and I are trying to make sentence diagramming a competitive sport. For that purpose Reed-Kellogg works -- perfectly, when the competition is with chalk and blackboards and not online.
On Youtube there are ten videos now showing us exploring this possibility. A problem that I have is that I do not officially teach it any more; and, although the students LOVE to compete, they are not really very good.
We will change those "powers that be"'s minds!
Glad to know you have that book.