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