1、When I gotto school, I realized that Ih锾攒揉敫ad left mybackpack at home.
当我到达学校时，我意识到我把背包落在家里了。
2、By the time I got to school, the bell had rung.
我到学校时，铃已经响了。
3、Before I got to the bus stop, the bushad alreadyleft.
在我到达车站之前，公共汽车已经开走了。
4、I was about to go up to my office when I decided to get a coffee first.
我刚要回办公室，就决定先喝杯咖啡。
5、As I was waiting in line with the other officeworkers, Iheard a loud sound.
正当我和其他办公室职员排队等候时，我听到一声巨响。