I can scare you can scare he can scare we can scare you can scare they can scare
V-ing form
I can be scaring you can be scaring he can be scaring we can be scaring you can be scaring they can be scaring
Perfect
I can have scared you can have scared he can have scared we can have scared you can have scared they can have scared
V-ing perfect
I can have been scaring you can have been scaring he can have been scaring we can have been scaring you can have been scaring they can have been scaring
Negation
Simple form
I can't scare you can't scare he can't scare we can't scare you can't scare they can't scare
V-ing form
I can't be scaring you can't be scaring he can't be scaring we can't be scaring you can't be scaring they can't be scaring
Perfect
I can't have scared you can't have scared he can't have scared we can't have scared you can't have scared they can't have scared
V-ing perfect
I can't have been scaring you can't have been scaring he can't have been scaring we can't have been scaring you can't have been scaring they can't have been scaring
Interrogative form
Simple form
can I scare? can you scare? can he scare? can we scare? can you scare? can they scare?
V-ing form
can I be scaring? can you be scaring? can he be scaring? can we be scaring? can you be scaring? can they be scaring?
Perfect
can I have scared? can you have scared? can he have scared? can we have scared? can you have scared? can they have scared?
V-ing perfect
can I have been scaring? can you have been scaring? can he have been scaring? can we have been scaring? can you have been scaring? can they have been scaring?
Interro-negative form
Simple form
can't I scare? can't you scare? can't he scare? can't we scare? can't you scare? can't they scare?
V-ing form
can't I be scaring? can't you be scaring? can't he be scaring? can't we be scaring? can't you be scaring? can't they be scaring?
Perfect
can't I have scared? can't you have scared? can't he have scared? can't we have scared? can't you have scared? can't they have scared?
V-ing perfect
can't I have been scaring? can't you have been scaring? can't he have been scaring? can't we have been scaring? can't you have been scaring? can't they have been scaring?