I can tender you can tender he can tender we can tender you can tender they can tender
V-ing form
I can be tendering you can be tendering he can be tendering we can be tendering you can be tendering they can be tendering
Perfect
I can have tendered you can have tendered he can have tendered we can have tendered you can have tendered they can have tendered
V-ing perfect
I can have been tendering you can have been tendering he can have been tendering we can have been tendering you can have been tendering they can have been tendering
Negation
Simple form
I can't tender you can't tender he can't tender we can't tender you can't tender they can't tender
V-ing form
I can't be tendering you can't be tendering he can't be tendering we can't be tendering you can't be tendering they can't be tendering
Perfect
I can't have tendered you can't have tendered he can't have tendered we can't have tendered you can't have tendered they can't have tendered
V-ing perfect
I can't have been tendering you can't have been tendering he can't have been tendering we can't have been tendering you can't have been tendering they can't have been tendering
Interrogative form
Simple form
can I tender? can you tender? can he tender? can we tender? can you tender? can they tender?
V-ing form
can I be tendering? can you be tendering? can he be tendering? can we be tendering? can you be tendering? can they be tendering?
Perfect
can I have tendered? can you have tendered? can he have tendered? can we have tendered? can you have tendered? can they have tendered?
V-ing perfect
can I have been tendering? can you have been tendering? can he have been tendering? can we have been tendering? can you have been tendering? can they have been tendering?
Interro-negative form
Simple form
can't I tender? can't you tender? can't he tender? can't we tender? can't you tender? can't they tender?
V-ing form
can't I be tendering? can't you be tendering? can't he be tendering? can't we be tendering? can't you be tendering? can't they be tendering?
Perfect
can't I have tendered? can't you have tendered? can't he have tendered? can't we have tendered? can't you have tendered? can't they have tendered?
V-ing perfect
can't I have been tendering? can't you have been tendering? can't he have been tendering? can't we have been tendering? can't you have been tendering? can't they have been tendering?