Hello my dear

If we are talking about the most common prepositions, pronouns and special weak forms.

We can start by describing the kinds of pronouns:

Personal pronouns /Adjective pronouns/ Possessive adjectives/Reflexive pronouns

I/you/he/she/it/        &nb sp; My/your/his/her/its        Mine/yours/his/hers       myself/yourself/

you/we/they                your(plural)/our/their      yours/ours/theirs          himself /herself

           & nbsp;             & nbsp;             & nbsp;             & nbsp;             & nbsp;             & nbsp;             & nbsp;             & nbsp;           itself/yourselves

         &nbs p;             &nbs p;             &nbs p;             &nbs p;             &nbs p;             &nbs p;             &nbs p;             &nbs p;            ourselves/ themselves

Regarding to weak forms, they are used in rapid speech, because if you want to mention some word in isolation; you will have to use the strong form.

I hope this will be worth for you

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No se a que viernes te refieres, pero mañana, viernes 5 haremos un control que ya les habia comentado que entraria listas y pilas.