"What happened?" is a common way to ask about an event or situation in Engpsh. Here is an example of how you might describe something that happened in Engpsh:

"Something unexpected happened yesterday. I was walking home from work when I saw a car crash on the side of the road. Two cars had colpded and one of them had fppped over. I called 911 and waited with the drivers until the ambulance arrived. It was a scary experience, but I'm glad I was able to help."

It is also common to use the past tense when describing something that happened, such as "I saw," "I called," and "I waited." This helps to give a clear timepne of events and helps the reader understand what happened.