Turned是不是turn的过去式

是turn的过去式，是翻转，变向的意思，经常与on,off,around连用。

he turned on the TV yesterday.他昨天打开了电视。

he should turned right at the crossroad,but turned left,so he lost his way.他应在十字路口右转，但他左转，所以他迷路了。