the ellipsis of "as"
"THAN and AS can replace subjects in clauses,rather like relative pronouns. '' a grammar book says

1 "As it is common knowledge,the earth goes around the sun
2 "As is common knowledge,the earth...
3"As common knowledge,the earth ...
I think all are all explainable.
my thoughts:
1, “as” leads a clause and conjoins it to the other
2,"as" is a relative pronoun and can replaced by subject.So 2nd="Which is common knowledge,the earth goes around the sun",which i think is correct
3rd "as": adjective before a clause
which is right?
plz pick faults with my thoughts
thx!

Question

the ellipsis of "as"
"THAN and AS can replace subjects in clauses,rather like relative pronouns. '' a grammar book says

1 "As it is common knowledge,the earth goes around the sun
2 "As is common knowledge,the earth...
3"As common knowledge,the earth ...
I think all are all explainable.
my thoughts:
 1, “as” leads a clause and conjoins it to the other  
2,"as" is a relative pronoun and can replaced by subject.So  2nd="Which is common knowledge,the earth goes around the sun",which i think is correct
3rd "as": adjective before a clause
which  is right?
plz pick faults with my thoughts
thx!

Answer

As a native speaker, I don't like "as" in these sentences, especially combined with"common knowledge" which is a noun. I think as goes better with a verb form, like " as we all know, the earth goes around the sun."

I would most likely use "that" in speaking. We all know that the earth goes around the sun.

I don't like your number 2 at all. It sounds totally wrong. I may not know the term, but it can't see a"as" as any type of pronoun. Here's a source that has a simple explanation that makes sense to me: https://www.englishclub.com/grammar/pronouns-relative.htm

Answers · 2

Still haven’t found your answers?

Don’t miss out on the opportunity to learn a language from the comfort of your own home. Browse our selection of experienced language tutors and enroll in your first lesson now!