Regular verb: underestimate - underestimated - underestimated
Simple form | V-ing form |
I must underestimate you must underestimate she must underestimate we must underestimate you must underestimate they must underestimate | I must be underestimating you must be underestimating she must be underestimating we must be underestimating you must be underestimating they must be underestimating |
Perfect | V-ing perfect |
I must have underestimated you must have underestimated she must have underestimated we must have underestimated you must have underestimated they must have underestimated | I must have been underestimating you must have been underestimating she must have been underestimating we must have been underestimating you must have been underestimating they must have been underestimating |
Simple form | V-ing form |
I must not underestimate you must not underestimate she must not underestimate we must not underestimate you must not underestimate they must not underestimate | I must not be underestimating you must not be underestimating she must not be underestimating we must not be underestimating you must not be underestimating they must not be underestimating |
Perfect | V-ing perfect |
I must not have underestimated you must not have underestimated she must not have underestimated we must not have underestimated you must not have underestimated they must not have underestimated | I must not have been underestimating you must not have been underestimating she must not have been underestimating we must not have been underestimating you must not have been underestimating they must not have been underestimating |
Simple form | V-ing form |
must I underestimate? must you underestimate? must she underestimate? must we underestimate? must you underestimate? must they underestimate? | must I be underestimating? must you be underestimating? must she be underestimating? must we be underestimating? must you be underestimating? must they be underestimating? |
Perfect | V-ing perfect |
must I have underestimated? must you have underestimated? must she have underestimated? must we have underestimated? must you have underestimated? must they have underestimated? | must I have been underestimating? must you have been underestimating? must she have been underestimating? must we have been underestimating? must you have been underestimating? must they have been underestimating? |
Simple form | V-ing form |
must I not underestimate? must you not underestimate? must she not underestimate? must we not underestimate? must you not underestimate? must they not underestimate? | must I not be underestimating? must you not be underestimating? must she not be underestimating? must we not be underestimating? must you not be underestimating? must they not be underestimating? |
Perfect | V-ing perfect |
must I not have underestimated? must you not have underestimated? must she not have underestimated? must we not have underestimated? must you not have underestimated? must they not have underestimated? | must I not have been underestimating? must you not have been underestimating? must she not have been underestimating? must we not have been underestimating? must you not have been underestimating? must they not have been underestimating? |