Page 608 - Practical English Usage 3ed - Michael Swan, Oxford

We've got food for as many people as want it. (NOT ••• tIS they ItItInt it.) Common expressions with as in place of a subject as follows; as was expected; as was agreed; as is well known.
I have prepared a new plan, as follows. (NOT ••• tIS itJiJll6ws.)
They lost money, as was expected. (NOT ••• tIS it WttS ~tet1.)
I am sending you the bill. as was agreed. (NOT ••• tIS it WttS agreetl:)
As is well known, smoking is dangerous. (NOT ,'13 it is ItIeH kmntm ...) 2 objects and complements: as I did last year
Than and as can also act as objects and complements.
They sent more vegetables than I had ordered. (NOT ••• thttn I httti
(miered them.)
Don't lose your passport, as I did last year. (NOT ••• tIS [ tiM it lttst yea",) She was more frightened than I was. (NOT ••• than I WttS it.)
You're as tired as I am. (NOT ••• tIS [ am it.)
Some English dialects use what after as and than in these cases. They sent more paper than what I had ordered. (non-standard) You're as tired as what I am. (non-standard)
582 thankful and grateful
Grateful is the normal word for people's reactions to kindness, favours etc. I'm very grateful for all your help. (NOT ['m uery thankful . ..)
She wasn't a bit grateful to me for repairing her car.
Thankful is used especially for feelings of relief at having avoided a danger, or at having come through an unpleasant experience.
I'm thankful that we got home before the storm started. We feel very thankful that she didn't marry him after alL Well, I'm thankful that's over.
583 that-clauses
1 that as a connector
That is a conjunction with little real meaning. It is simply a connector - it shows that a clause forms part of a larger sentence. Compare:
I understood. He was innocent. (two separate sentences)
I understood that he was innocent. (The clause he was innocent has become
the object of the verb in the larger sentence.)
2 that-clauses in sentences
A that-clause can be the subject of a sentence.
That she should forget me so quickly was rather a shock.
It can be a complement after be.
The main thing is that you're happy.
Many verbs can bave that-clauses as objects.
We knew that the next day would be difficult.
I regretted that I was not going to be at the meeting.
And many nouns and adjectives can be followed by that-clauses. I admire your belief that you are always right.
The Minister is anxious that nothing should get into the papers.
thankful and grateful 582
page 576