He "knew for a fact" that the store closed at 9 p.m.
certain
not certain
He "couldn't have" known about the surprise party.
very certain
uncertain
They "were sure" they had followed all the instructions precisely,
not certain
certain
I "bet" she'll finish the marathon in under four hours
certain
not certain
He "might have" forgotten to send the important email.
uncertain
very certain
After analyzing the clues, she "figured" that the missing keys might be in the coat pocket.
not certain
certain
He "can't have" finished the entire project in just one day.
uncertain
very certain
I "suppose" we could try the new restaurant downtown for dinner tonight.
certain
not certain
He "might not have" realized that the meeting was rescheduled.
very certain
uncertain
She "could have" completed the marathon.
very certain
uncertain
She "assumed" the meeting time had changed.
not certain
certain
She "guessed" the answer to the riddle.
certain
not certain
She "doubted" the authenticity of the information presented.
not certain
certain
He "must have" forgotten his keys.
uncertain
very certain
She "may have" left her phone at the office.
very certain
uncertain
She "was positive" that her meticulous planning would lead to a successful outcome for the event.
certain
not certain
She "must not have" heard the announcement.
very certain
uncertain
She "must have" forgotten about the dentist appointment.
uncertain
very certain
She "had a hunch" that the surprise party was for her.
certain
not certain
She "may not have" received the invitation yet.
very certain
uncertain