Alan wrote:'Predicate-focused' sentential:
He teaches school, AS I did when I was young.
('As', here the object of the verb 'did', refers to the putatively nominalized predicate of the main clause, i.e. teaching school).
It is interesting that "teaches school" is considered a "sentence". I believe it is in fact in "a category of a phrase" because "sentence" or "clause" must have at least "a subject + a verb", isn't it? I think the categorization is based on increasing "an efficiency of a classification".
Alan wrote:1. There is only one other sentential relative pronoun, and that is 'which'.
How about "than"? When I came across a sentence with "than", I think it is similar with "as" when it comes to "elliptical sentential antecedent". I believe "than" has also a character of a relative pronoun, but "than-clause , phrase" stands as an adverbial or adnominal post modifier to a comparative word.
#1
The report provided evidence that employment will continue to grow in the months before the November election, but much more slowly
than administration officials had hoped just a few months ago.
:Similar with "Predicate-focused sentential Raltive pronoun"
=> than administration officials had hoped (
continuing to grow in the months before the November election) just a few months ago
#2
Even with the new jobs created last month, economists said that employment had grown more slowly since the end of the recession of 2001
than during any previous recovery in the last half century.
: Similar with ""Predicate-focused sentential Raltive pronoun"
=> than (
It did Growing ) during any previous recovery in the last half century
#3
Taken together, the increases in wages and in hours worked could mean that consumers will have more money to spend
than previously thought.
:Similar with ""Predicate-focused sentential Raltive pronoun"
=> than (
It is) previously thought (
Having money to spend)
#4
As in previous months, unemployment in August had less to do with mass layoffs
than with a reluctance to hire.
:"AS" as "Full-sentential Raltive pronoun"
=> As (unemployment in August had less to do with mass layoffs than with a reluctance to hire) in previous months,..
:Similar with "Predicate-focused sentential Raltive pronoun"
=> than (
It DID having less to do) with a reluctance to hire
#5
The Labor Department estimated that 534,000 people were too discouraged to look for work, about the same number
as in July but about 30,000 more
than in August 2003.
:Similar with "Predicate-focused sentential Raltive pronoun"
=> as (
They Did estimating that people were too discouraged to look for work) in July but about 30,000 more than (
They Did estimating that 534,000 people were too discouraged to look for work) in August 2003
#6
But the labor participation remains lower today
than it was two years ago or at the start of the recession.
:Similar with "Adnominal nonsentential Raltive pronoun"
=> than it was (
the labor participation) two years ago or at the start of the recession