Regular verb: introduce - introduced - introduced
Simple form | V-ing form |
I must introduce you must introduce he must introduce we must introduce you must introduce they must introduce | I must be introducing you must be introducing he must be introducing we must be introducing you must be introducing they must be introducing |
Perfect | V-ing perfect |
I must have introduced you must have introduced he must have introduced we must have introduced you must have introduced they must have introduced | I must have been introducing you must have been introducing he must have been introducing we must have been introducing you must have been introducing they must have been introducing |
Simple form | V-ing form |
I mustn't introduce you mustn't introduce he mustn't introduce we mustn't introduce you mustn't introduce they mustn't introduce | I mustn't be introducing you mustn't be introducing he mustn't be introducing we mustn't be introducing you mustn't be introducing they mustn't be introducing |
Perfect | V-ing perfect |
I mustn't have introduced you mustn't have introduced he mustn't have introduced we mustn't have introduced you mustn't have introduced they mustn't have introduced | I mustn't have been introducing you mustn't have been introducing he mustn't have been introducing we mustn't have been introducing you mustn't have been introducing they mustn't have been introducing |
Simple form | V-ing form |
must I introduce? must you introduce? must he introduce? must we introduce? must you introduce? must they introduce? | must I be introducing? must you be introducing? must he be introducing? must we be introducing? must you be introducing? must they be introducing? |
Perfect | V-ing perfect |
must I have introduced? must you have introduced? must he have introduced? must we have introduced? must you have introduced? must they have introduced? | must I have been introducing? must you have been introducing? must he have been introducing? must we have been introducing? must you have been introducing? must they have been introducing? |
Simple form | V-ing form |
mustn't I introduce? mustn't you introduce? mustn't he introduce? mustn't we introduce? mustn't you introduce? mustn't they introduce? | mustn't I be introducing? mustn't you be introducing? mustn't he be introducing? mustn't we be introducing? mustn't you be introducing? mustn't they be introducing? |
Perfect | V-ing perfect |
mustn't I have introduced? mustn't you have introduced? mustn't he have introduced? mustn't we have introduced? mustn't you have introduced? mustn't they have introduced? | mustn't I have been introducing? mustn't you have been introducing? mustn't he have been introducing? mustn't we have been introducing? mustn't you have been introducing? mustn't they have been introducing? |