The other day while I was sitting on the train... to begin a story New buildings were going up everywhere. to show change or development Just as I was falling asleep, I heard a strange noise. something that continued before and after another action He was taking money from the till when no-one was looking. something happening again and again What were you doing at the time of the incident? something that happened before and after a particular time It was raining. something that continued for some time https://339efcb25eb75e967b0d-ff8eeadd950d51fd1fc939dca75b3973.ssl.cf1.rackcdn.com/assets_green.swf