I can oppose you can oppose he can oppose we can oppose you can oppose they can oppose
V-ing form
I can be opposing you can be opposing he can be opposing we can be opposing you can be opposing they can be opposing
Perfect
I can have opposed you can have opposed he can have opposed we can have opposed you can have opposed they can have opposed
V-ing perfect
I can have been opposing you can have been opposing he can have been opposing we can have been opposing you can have been opposing they can have been opposing
Negation
Simple form
I can't oppose you can't oppose he can't oppose we can't oppose you can't oppose they can't oppose
V-ing form
I can't be opposing you can't be opposing he can't be opposing we can't be opposing you can't be opposing they can't be opposing
Perfect
I can't have opposed you can't have opposed he can't have opposed we can't have opposed you can't have opposed they can't have opposed
V-ing perfect
I can't have been opposing you can't have been opposing he can't have been opposing we can't have been opposing you can't have been opposing they can't have been opposing
Interrogative form
Simple form
can I oppose? can you oppose? can he oppose? can we oppose? can you oppose? can they oppose?
V-ing form
can I be opposing? can you be opposing? can he be opposing? can we be opposing? can you be opposing? can they be opposing?
Perfect
can I have opposed? can you have opposed? can he have opposed? can we have opposed? can you have opposed? can they have opposed?
V-ing perfect
can I have been opposing? can you have been opposing? can he have been opposing? can we have been opposing? can you have been opposing? can they have been opposing?
Interro-negative form
Simple form
can't I oppose? can't you oppose? can't he oppose? can't we oppose? can't you oppose? can't they oppose?
V-ing form
can't I be opposing? can't you be opposing? can't he be opposing? can't we be opposing? can't you be opposing? can't they be opposing?
Perfect
can't I have opposed? can't you have opposed? can't he have opposed? can't we have opposed? can't you have opposed? can't they have opposed?
V-ing perfect
can't I have been opposing? can't you have been opposing? can't he have been opposing? can't we have been opposing? can't you have been opposing? can't they have been opposing?