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This verbal English is a little more complicated, because other aspects assimilating forces that are more abstract, such as irregular verbs eg.

The simple present is often used to refer to actionsthat took place at a particular time in the past. In this case particles are used as yesterday (yesterday) or last year (last year).

    She finished school last year -> finished school last year.It is also used for the past actions that occurred in the past and who have completed, but does not mention the right time.

    Who wrote That letter? -> Who wrote this letter?

To form thepast we put the verb in its past, and here comes the difilcultad. First, we must distinguish two kinds of verbs: the regular and irregular. The latter, because of its difficulty, we will leave for thenext lesson and focus on the regular.
Rules for regular verbs

Regular verbs, to pass at last, must end in-ed. This general rule, because there are EXCEPTION discussed next.

    to listen(listen) -> listened

We just have to add the d when the verb already ends in e.

    to change (change) -> changed

If the last vowel of the verb is formed by consonant-vowel-consonant, and consonantlatter is where the accent falls, we have to double that consonant. Also if the verb ends in l have to bend.

    to stop (stop) -> stopped
    to travel (travel) -> Travelled

Negation andinterrogation of the past simple

To form the simple past questions we have to enforce the auxiliary to do in its past, it did for everyone conjugation. The auxiliary verbs that do not need, like tohave, be used past nen (irregular).

    Did you go to the party? -> Fuistes to the party?

As shown in the example, the verb is in the present. This is because the auxiliary is one that indicatesthe past, so that the main verb is placed on this. This must be taken into account.

To deny also used the auxiliary to do in his past form., Accompanying with the main verb in the present tense....