English verb conjugation SHALL HAPPEN
Regular verb: happen - happened - happened
Affirmation
Simple form
--
it'll happen
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V-ing form
--
it'll be happening
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Perfect
--
it'll have happened
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V-ing perfect
--
it'll have been happening
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Negation
Simple form
--
it shan't happen
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V-ing form
--
it shan't be happening
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Perfect
--
it shan't have happened
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V-ing perfect
--
it shan't have been happening
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Interrogative form
Simple form
--
shall it happen?
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V-ing form
--
shall it be happening?
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Perfect
--
shall it have happened?
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V-ing perfect
--
shall it have been happening?
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Interro-negative form
Simple form
--
shan't it happen?
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V-ing form
--
shan't it be happening?
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Perfect
--
shan't it have happened?
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V-ing perfect
--
shan't it have been happening?
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