El libro Insight - Intermedio - Unidad 2 - 2E

used to indicate that two things happen at the same time or during something else

at a later time

a span of time

used to refer to a time in the past, showing how much time has passed before the present moment

after or at the end of a series of events or an extended period

in a way that is quick and unexpected

after a long time, usually when there has been some difficulty

used to say that something is happening at the same time with another