Conjugação do verbo inglês
CAN JACKKNIFE

Verbo regular: jackknife - jackknifed - jackknifed

Afirmação

Forma simple	Forma com V-ing
I can jackknife you can jackknife he can jackknife we can jackknife you can jackknife they can jackknife	I can be jackknifing you can be jackknifing he can be jackknifing we can be jackknifing you can be jackknifing they can be jackknifing
Perfeito	Perfeito com V-ing
I can have jackknifed you can have jackknifed he can have jackknifed we can have jackknifed you can have jackknifed they can have jackknifed	I can have been jackknifing you can have been jackknifing he can have been jackknifing we can have been jackknifing you can have been jackknifing they can have been jackknifing

Negação

Forma simple	Forma com V-ing
I can't jackknife you can't jackknife he can't jackknife we can't jackknife you can't jackknife they can't jackknife	I can't be jackknifing you can't be jackknifing he can't be jackknifing we can't be jackknifing you can't be jackknifing they can't be jackknifing
Perfeito	Perfeito com V-ing
I can't have jackknifed you can't have jackknifed he can't have jackknifed we can't have jackknifed you can't have jackknifed they can't have jackknifed	I can't have been jackknifing you can't have been jackknifing he can't have been jackknifing we can't have been jackknifing you can't have been jackknifing they can't have been jackknifing

Forma interrogativa

Forma simple	Forma com V-ing
can I jackknife? can you jackknife? can he jackknife? can we jackknife? can you jackknife? can they jackknife?	can I be jackknifing? can you be jackknifing? can he be jackknifing? can we be jackknifing? can you be jackknifing? can they be jackknifing?
Perfeito	Perfeito com V-ing
can I have jackknifed? can you have jackknifed? can he have jackknifed? can we have jackknifed? can you have jackknifed? can they have jackknifed?	can I have been jackknifing? can you have been jackknifing? can he have been jackknifing? can we have been jackknifing? can you have been jackknifing? can they have been jackknifing?

Forma interro-Negação

Forma simple	Forma com V-ing
can't I jackknife? can't you jackknife? can't he jackknife? can't we jackknife? can't you jackknife? can't they jackknife?	can't I be jackknifing? can't you be jackknifing? can't he be jackknifing? can't we be jackknifing? can't you be jackknifing? can't they be jackknifing?
Perfeito	Perfeito com V-ing
can't I have jackknifed? can't you have jackknifed? can't he have jackknifed? can't we have jackknifed? can't you have jackknifed? can't they have jackknifed?	can't I have been jackknifing? can't you have been jackknifing? can't he have been jackknifing? can't we have been jackknifing? can't you have been jackknifing? can't they have been jackknifing?