grammaticality - How to form sentences starting with "it"

I would like to learn how to reconstruct this sentence to use it at the beginning:

The reason why they chose this way looks weird to me.

I think we could form it as follows, but of course I am not really sure about it:

It looks weird to me the reason why they chose this way.

And, could you please also explain the grammatical approach to form sentences like the above starting with it?

Answer

It seems to me that you want to use "it" as a Dummy Pronoun (like I have in this sentence). However, you are actually using "it" to refer to "the reason".

Furthermore, I would not use "looks" to describe the intangible noun "reason". A suitable replacement might be "seems" or "feels".

A possible reconstruction (with the substitution) could be:

It seems weird to me that they chose this way.

or

It seems weird to me that they chose this way for the reason that they did.