It is possible that the plane will land at a different airport because of very bad weather in Liverpool. MAY
The plane may land at a different airport because of very bad weather in Liverpool.
I’m sure that Sean has studied Spanish before because he speaks it fluently. HAVE
Sean MUST HAVE STUDIED Spanish before because he speaks it fluently.
I’m sure that that woman isn’t Andy’s mother – she’s too young. BE
This woman CAN'T BE Andy's mother - she's too young.
It’s still possible that we will save enough money to go to Peru. MIGHT
We MIGHT save enough money to go to Peru.
It’s possible that Janet’s car broke down before she reached London. COULD
Janet’s car could have broken down before she reached London.
I didn't like eating fish and chips for lunch 5 years ago. USED TO
I didn't use to eat fish and chips for lunch 5 years ago.
Tina went to the zoo twice a year. WOULD
Tina would go to the zoo twice a year.
Who stayed at your grandparents’ house in the summer? USED TO
Who USED TO stay at your grandparents’ house in the summer?
People didn't talk on the phone on the bus then. USED TO
People didn't use to talk on the phone on the bus.
Was Sandra the best student at school? USED TO
Did Sandra use to be the best student at school?
We often went swimming in the river in those days. WOULD
We WOULD often go swimming in the river in those days.
