MODALS AND MODAL PERFECTS
1. It’s possible that Jane will visit Switzerland next year. (COULD)
Jane could visit Switzerland next year.
2. I’m sure that Mrs. Smith didn’t leave home. (CAN'T)
Mrs. Smith can’t have left home.
3. I advise you to go to the doctor as soon as possible. (SHOULD)
You should go to the doctor as soon as possible.
4. There's no need to wake up so early tomorrow. (HAVE)
You don’t have to wake up so early tomorrow.
5. It’s possible the weather will be sunny tomorrow. (MIGHT)
The weather might be sunny tomorrow.