The Ngram shows that in American English used never to happened less than 50 % as often as did not use(d) to in 2008, and its use has become steadily declining.In the second sentence (my bold characters), whether or not I selected to have a completely new vehicle isn't what is emphasized; what is emphasised is the time and effort it took to adapt t

How and where to place consecutive intercalary days in a very lunisolar calendar with strictly lunar months, but an Earthlike solar year?While in the second sentence (my bold characters), whether or not I chose to have a whole new automobile isn't what is emphasized; what is emphasised is definitely the time and effort it took to adapt to the new p