simple past tense 

The simple past tense is used to describe actions that have happened at an earlier time and have been completed, for example:

she cleaned her house.
She clean her house

Both the negative interrogative as auxiliary did is used as
did she clean her house?

Negations can be used in the contracted form did not or did not
she did not clean her house

In expressing simple past sentence means that the action has not

I lost the keys. the lost keys

she lent me a book. She lent me a book

It is also possible to indicate the time when the action is to tell time more accurately:
They Saw the movie last night, they saw the film at night
we went to london yesterday, we went to london yesterday

In order to form a sentence in the past tense must distinguish two types of verbs: regular and Irregular.
The regular is put at the end of the verb ed
If the verb ends in a consonant (y) and transformed into (i) to form the past
cry + ed = cried

Rule of thumb:
We use the past to talk about situations that occurred some time ago.
Normally we use adverbs of time to support the phrase as:
yesterday / yesterday / last week / last week
The questioning is done with the auxiliary did and the infinitive of the verb conjugate.

did she clean her house?


auxiliary
subject
infinitive


How affirmativo with the past of the verb conjugated

she cleaned her house.


last