Adverbial Clause of Comparison usage, another question

I have two stupid questions:

1.how the Adverbial Clause of Comparison look like before anything isomitted ?
to help you understand me in a more clearly way, I 'll make the assumptions below.
e.g. The prices are higher than they have been (high). It is as much a shock to me as it is (a shock) to you. I feel just as bad about his kid as everyone else (feel bad).
so, am I right? if am wrong, what should they look like?
2.what are the Adverbial Clause of Comparison modifying or decorating?take , the above three clause for example.
The prices are higher than they have been ('than they have been' modifies or decorates 'higher')
It is as much a shock to me as it is to you. ('as it is to you' modifies or decorates 'as much a shock') I feel just as bad about his kid as everyone else ('as everyone else' modifies or decorates 'as bad').
again, am I right?
these has been a confusion since I started learning English, I would highly appreciate it if you can come up with any direction or guidance.
Thanks in advance