I can admire you can admire he can admire we can admire you can admire they can admire
V-ing form
I can be admiring you can be admiring he can be admiring we can be admiring you can be admiring they can be admiring
Perfect
I can have admired you can have admired he can have admired we can have admired you can have admired they can have admired
V-ing perfect
I can have been admiring you can have been admiring he can have been admiring we can have been admiring you can have been admiring they can have been admiring
Negation
Simple form
I can't admire you can't admire he can't admire we can't admire you can't admire they can't admire
V-ing form
I can't be admiring you can't be admiring he can't be admiring we can't be admiring you can't be admiring they can't be admiring
Perfect
I can't have admired you can't have admired he can't have admired we can't have admired you can't have admired they can't have admired
V-ing perfect
I can't have been admiring you can't have been admiring he can't have been admiring we can't have been admiring you can't have been admiring they can't have been admiring
Interrogative form
Simple form
can I admire? can you admire? can he admire? can we admire? can you admire? can they admire?
V-ing form
can I be admiring? can you be admiring? can he be admiring? can we be admiring? can you be admiring? can they be admiring?
Perfect
can I have admired? can you have admired? can he have admired? can we have admired? can you have admired? can they have admired?
V-ing perfect
can I have been admiring? can you have been admiring? can he have been admiring? can we have been admiring? can you have been admiring? can they have been admiring?
Interro-negative form
Simple form
can't I admire? can't you admire? can't he admire? can't we admire? can't you admire? can't they admire?
V-ing form
can't I be admiring? can't you be admiring? can't he be admiring? can't we be admiring? can't you be admiring? can't they be admiring?
Perfect
can't I have admired? can't you have admired? can't he have admired? can't we have admired? can't you have admired? can't they have admired?
V-ing perfect
can't I have been admiring? can't you have been admiring? can't he have been admiring? can't we have been admiring? can't you have been admiring? can't they have been admiring?