The police have been observing his movements.（英译中)

The police recovered the stolen jewellery.（英译中)

You should have reported them to the police.（英译中)

Have you been to the Imperial Palace？（英译中)

Men have been making music for thousands of years.（英译中)

There have been several murders this year.（英译中)

His car accident has been a lesson to him to stop driving too fast.（英译中)