So: Part 2
[source: Swan 1995]
5. so … that
e.g. It was so hot (that) we could not work.
6. some formal uses
6.1 so … as to …
e.g. Would you be so kind as to help me with this document?
6.2 so … a …
e.g. It is so glorious a view. (similar to: It is such a glorious view.)
e.g. He was a bachelor and remained so until his death.
Part 3 to follow shortly. Watch this space.