to think (that)
It is really shocking or surprising that (something is the case). And to think, if I had taken the but to work like I normally do, I would have been in that accident, too! To think that a woman like could be elected to public office.
to ˈthink (that)...
used to show that you are surprised or shocked by something: I can still hardly believe it! To think that the President stayed at my hotel!To think that he was killed on the last day of the war. It’s so sad.