I can donate you can donate he can donate we can donate you can donate they can donate
V-ing form
I can be donating you can be donating he can be donating we can be donating you can be donating they can be donating
Perfect
I can have donated you can have donated he can have donated we can have donated you can have donated they can have donated
V-ing perfect
I can have been donating you can have been donating he can have been donating we can have been donating you can have been donating they can have been donating
Negation
Simple form
I can't donate you can't donate he can't donate we can't donate you can't donate they can't donate
V-ing form
I can't be donating you can't be donating he can't be donating we can't be donating you can't be donating they can't be donating
Perfect
I can't have donated you can't have donated he can't have donated we can't have donated you can't have donated they can't have donated
V-ing perfect
I can't have been donating you can't have been donating he can't have been donating we can't have been donating you can't have been donating they can't have been donating
Interrogative form
Simple form
can I donate? can you donate? can he donate? can we donate? can you donate? can they donate?
V-ing form
can I be donating? can you be donating? can he be donating? can we be donating? can you be donating? can they be donating?
Perfect
can I have donated? can you have donated? can he have donated? can we have donated? can you have donated? can they have donated?
V-ing perfect
can I have been donating? can you have been donating? can he have been donating? can we have been donating? can you have been donating? can they have been donating?
Interro-negative form
Simple form
can't I donate? can't you donate? can't he donate? can't we donate? can't you donate? can't they donate?
V-ing form
can't I be donating? can't you be donating? can't he be donating? can't we be donating? can't you be donating? can't they be donating?
Perfect
can't I have donated? can't you have donated? can't he have donated? can't we have donated? can't you have donated? can't they have donated?
V-ing perfect
can't I have been donating? can't you have been donating? can't he have been donating? can't we have been donating? can't you have been donating? can't they have been donating?