Conjugación del verbo inglés
CAN THUMB

Verbo regular: thumb - thumbed - thumbed

Afirmación

Forma simple	Forma con V-ing
I can thumb you can thumb he can thumb we can thumb you can thumb they can thumb	I can be thumbing you can be thumbing he can be thumbing we can be thumbing you can be thumbing they can be thumbing
Perfecto	Perfecto con V-ing
I can have thumbed you can have thumbed he can have thumbed we can have thumbed you can have thumbed they can have thumbed	I can have been thumbing you can have been thumbing he can have been thumbing we can have been thumbing you can have been thumbing they can have been thumbing

Negación

Forma simple	Forma con V-ing
I can't thumb you can't thumb he can't thumb we can't thumb you can't thumb they can't thumb	I can't be thumbing you can't be thumbing he can't be thumbing we can't be thumbing you can't be thumbing they can't be thumbing
Perfecto	Perfecto con V-ing
I can't have thumbed you can't have thumbed he can't have thumbed we can't have thumbed you can't have thumbed they can't have thumbed	I can't have been thumbing you can't have been thumbing he can't have been thumbing we can't have been thumbing you can't have been thumbing they can't have been thumbing

Forma interrogativa

Forma simple	Forma con V-ing
can I thumb? can you thumb? can he thumb? can we thumb? can you thumb? can they thumb?	can I be thumbing? can you be thumbing? can he be thumbing? can we be thumbing? can you be thumbing? can they be thumbing?
Perfecto	Perfecto con V-ing
can I have thumbed? can you have thumbed? can he have thumbed? can we have thumbed? can you have thumbed? can they have thumbed?	can I have been thumbing? can you have been thumbing? can he have been thumbing? can we have been thumbing? can you have been thumbing? can they have been thumbing?

Forma interro-negativa

Forma simple	Forma con V-ing
can't I thumb? can't you thumb? can't he thumb? can't we thumb? can't you thumb? can't they thumb?	can't I be thumbing? can't you be thumbing? can't he be thumbing? can't we be thumbing? can't you be thumbing? can't they be thumbing?
Perfecto	Perfecto con V-ing
can't I have thumbed? can't you have thumbed? can't he have thumbed? can't we have thumbed? can't you have thumbed? can't they have thumbed?	can't I have been thumbing? can't you have been thumbing? can't he have been thumbing? can't we have been thumbing? can't you have been thumbing? can't they have been thumbing?