Verbo "to do"

Corrisponde al verbo italiano "fare". È usato come ausiliare nelle forme negativa, interrogativa e interrogativo-negativa dei verbi ordinari.

I go.
I don't go.
Do I go?
Don't I go?

Simple present

Forma affermativa	Forma negativa		Forma interrogativa	Forma interrogativo-negativa
Forma affermativa	Forma intera	Forma contratta	Forma interrogativa	Forma intera	Forma contratta
I do	I do not	I don't	Do I?	Do I not?	Don't I?
You do	You do not	You don't	Do you?	Do you not?	Don't you?
He does	He does not	He doesn't	Does he?	Does he not?	Doesn't he?
She does	She does not	She doesn't	Does she?	Does she not?	Doesn't she?
It does	It does not	It doesn't	Does it?	Does it not?	Doesn't it?
We do	We do not	We don't	Do we?	Do we not?	Don't we?
You do	You do not	You don't	Do you?	Do you not?	Don't you?
They do	They do not	They don't	Do they?	Do they not?	Don't they?

Per approfondire questo argomento, consulta la pagina Present continuous.

Forma affermativa		Forma negativa		Forma interrogativa	Forma interrogativo-negativa
Forma intera	Forma contratta	Forma intera	Forma contratta	Forma interrogativa	Forma intera	Forma contratta
I am doing	I'm doing	I am not doing	I'm not doing	Am I doing?	Am I not doing?	Aren't I doing?
You are doing	You're doing	You are not doing	You aren't doing	Are you doing?	Are you not doing?	Aren't you doing?
He is doing	He's doing	He is not doing	He isn't doing	Is he doing?	Is he not doing?	Isn't he doing?
She is doing	She's doing	She is not doing	She isn't doing	Is she doing?	Is she not doing?	Isn't she doing?
It is doing	It's doing	It is not doing	It isn't doing	Is it doing?	Is it not doing?	Isn't it doing?
We are doing	We're doing	We are not doing	We aren't doing	Are we doing?	Are we not doing?	Aren't we doing?
You are doing	You're doing	You are not doing	You aren't doing	Are you doing?	Are you not doing?	Aren't you doing?
They are doing	They're doing	They are not doing	They aren't doing	Are they doing?	Are they not doing?	Aren't they doing?

Da verbo irregolare, il verbo "to do" ha una particolare forma alla forma affermativa del past simple, valida per tutte le persone.

Nelle altre forme si comporta da verbo ordinario, usando sempre il verbo "to do" come ausiliare.

I didn't do.
Did I do?
Didn't I do?

Per approfondire questo argomento, consulta la pagina Past progressive.

Forma affermativa	Forma negativa		Forma interrogativa	Forma interrogativo-negativa
Forma affermativa	Forma intera	Forma contratta	Forma interrogativa	Forma intera	Forma contratta
I was doing	I was not doing	I wasn't doing	Was I doing?	Was I not doing?	Wasn't I doing?
You were doing	You were not doing	You weren't doing	Were you doing?	Were you not doing?	Weren't you doing?
He was doing	He was not doing	He wasn't doing	Was he doing?	Was he not doing?	Wasn't he doing?
She was doing	She was not doing	She wasn't doing	Was she doing?	Was she not doing?	Wasn't she doing?
It was doing	It was not doing	It wasn't doing	Was it doing?	Was it not doing?	Wasn't it doing?
We were doing	We were not doing	We weren't doing	Were we doing?	Were we not doing?	Weren't we doing?
You were doing	You were not doing	You weren't doing	Were you doing?	Were you not doing?	Weren't you doing?
They were doing	They were not doing	They weren't doing	Were they doing?	Were they not doing?	Weren't they doing?

Forma affermativa		Forma negativa		Forma interrogativa	Forma interrogativo-negativa
Forma intera	Forma contratta	Forma intera	Forma contratta	Forma interrogativa	Forma intera	Forma contratta
I have done	I've done	I have not done	I haven't done	Have I done?	Have I not done?	Haven't I done?
You have done	You've done	You have not done	You haven't done	Have you done?	Have you not done?	Haven't you done?
He has done	He's done	He has not done	He hasn't done	Has he done?	Has he not done?	Hasn't he done?
She has done	She's done	She has not done	She hasn't done	Has she done?	Has she not done?	Hasn't she done?
It has done	It's done	It has not done	It hasn't done	Has it done?	Has it not done?	Hasn't it done?
We have done	We've done	We have not done	We haven't done	Have we done?	Have we not done?	Haven't we done?
You have done	You've done	You have not done	You haven't done	Have you done?	Have you not done?	Haven't you done?
They have done	They've done	They have not done	They haven't done	Have they done?	Have they not done?	Haven't they done?