Only now you can even get them on top of wrinkles. Only infrequently does it happen. As one of our members has said, inversion happens when a sentence starts with "only" and never ...
On this page in Wikipedia!, it states for first conditional sentences: The condition can also be expressed using the modal verb should. This form can be used to make an inverted condition ...
I am wondering whether we can invert the subject and the verb in english. Ex (illustrative only): A car is provided to the players. The keys must be retrieved at the office. would become ...