Certainty and deduction – future and past

English course Level B2 A review of modal verbs Certainty and deduction – future and past

	Positive
	Modal	Past	Future
1a	will	will/would have	will be
2a	must	must have	–
3a	should	should have	should be
4a	ought to	ought to have	ought to be
5a	might	might have	might be
6a	could	could have	could be
7a	may	may have	may be

	Negative
	Modal	Past	Future
1b	will not	will/would not have	will not be
2b	must not	must not have	–
3b	should not	should not have	should not be
4b	ought not	ought not have	ought not be
5b	might not	might not have	might not be
6b	could not	could not have	could not be
7b	may not	may not have	may not be

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