I could captivate you could captivate he could captivate we could captivate you could captivate they could captivate
V-ing form
I could be captivating you could be captivating he could be captivating we could be captivating you could be captivating they could be captivating
Perfect
I could have captivated you could have captivated he could have captivated we could have captivated you could have captivated they could have captivated
V-ing perfect
I could have been captivating you could have been captivating he could have been captivating we could have been captivating you could have been captivating they could have been captivating
Negation
Simple form
I couldn't captivate you couldn't captivate he couldn't captivate we couldn't captivate you couldn't captivate they couldn't captivate
V-ing form
I couldn't be captivating you couldn't be captivating he couldn't be captivating we couldn't be captivating you couldn't be captivating they couldn't be captivating
Perfect
I couldn't have captivated you couldn't have captivated he couldn't have captivated we couldn't have captivated you couldn't have captivated they couldn't have captivated
V-ing perfect
I couldn't have been captivating you couldn't have been captivating he couldn't have been captivating we couldn't have been captivating you couldn't have been captivating they couldn't have been captivating
Interrogative form
Simple form
could I captivate? could you captivate? could he captivate? could we captivate? could you captivate? could they captivate?
V-ing form
could I be captivating? could you be captivating? could he be captivating? could we be captivating? could you be captivating? could they be captivating?
Perfect
could I have captivated? could you have captivated? could he have captivated? could we have captivated? could you have captivated? could they have captivated?
V-ing perfect
could I have been captivating? could you have been captivating? could he have been captivating? could we have been captivating? could you have been captivating? could they have been captivating?
Interro-negative form
Simple form
couldn't I captivate? couldn't you captivate? couldn't he captivate? couldn't we captivate? couldn't you captivate? couldn't they captivate?
V-ing form
couldn't I be captivating? couldn't you be captivating? couldn't he be captivating? couldn't we be captivating? couldn't you be captivating? couldn't they be captivating?
Perfect
couldn't I have captivated? couldn't you have captivated? couldn't he have captivated? couldn't we have captivated? couldn't you have captivated? couldn't they have captivated?
V-ing perfect
couldn't I have been captivating? couldn't you have been captivating? couldn't he have been captivating? couldn't we have been captivating? couldn't you have been captivating? couldn't they have been captivating?