It is wrong what they are doing.
what they are doing is an extraposed subject in the sentence above.
Is what they are doing a noun phrase in It is wrong what they are doing?
It is wrong, what they are doing . No, it's not an extraposition construction. There would normally be a pause after "wrong", and also a comma in writing.
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It is wrong, what they are doing.
No, it's not an extraposition construction.
There would normally be a pause after "wrong", and also a comma in writing.
This is a crucial point: that phonological difference makes it a different construction, called 'right dislocation'.
Unlike in extraposition, in the Right Dislocation construction the later elemen