1 It was the first time there had been a mugging in town.
There was never a mugging in town before.
2 She usually checks her emails for an hour in the morning.
She usually spends time checking her emails in the morning.
3 After following the thief for hours, the police caught her.
The police have been searching for the thief for hours before they caught her.
4 Emma often writes reports.
Emma is used to reading reports.
