What Is Probably True
Modal Verbs of Probability - Present
Modal verbs of probability express an opinion based on what a speaker knows about a situation at the moment of speaking. The following forms are used to speak about present situations.
Example:
Paul can't be about to leave the sector.
Graham must be trained in comedy.
Shannon can't be planning to attend the hearing without legal assistance.
Present Forms
'Must' plus the verb expresses the idea that you are almost 100% sure of your opinion about a given situation.
Subject + must + base form of verb + objects
Example:
He must be pursuing a new research process.
Graham must be trained in comedy.
Use 'might' or 'could' to express an opinion that you think has a good possibility of being true.
Subject + might / could + base form of verb + objects
Example:
This could be the right space for our learning organization.
The leadership council might be convinced to give us access to the tower.
'Can't' plus the verb expresses the idea that you are almost 100% sure that something is not true.
Subject + can't + base form of verb + objects
Example:
Paul can't be about to leave the sector.
Erick Idle can't be screening the unfinished film.