I'm guessing that in this sentence 'er' is being used in the sense of 'of it' and that 'tegen' is being used as an adverb? If so, would it be valid to use 'ik ben volstrekt tegen het' instead for approximately the same meaning?
Don't use het as a pronoun after prepositions, it just isn't correct :)
Examples: On it = er op / erop / not op het -- From it= er van / ervan / not van het
Cool. So in this case, if 'volstrekt' wasn't present, one would write 'ertegen'. Thanks for the clarification!
As er is the indefinite article, does "to it" need to be stated: I think that "I am completely opposed" should also be ok
I know it's not related to the topic, but , could anyone kind provide a general rule of the word order in Dutch? it will be very useful to me. Or how the word order changes due to some inversions.
Why is it we can't say "Ik ben het volstrekt tegen"? Is it because of some type of relationship between er + tegen?
Because to be against it = ertegen zijn.
Also in your sentence het would be in the wrong location and would have to be moved behind tegen. Though still tegen het becomes ertegen, which in this case gets separated to er volstrekt tegen.