Bonjour !
Je parle aux enfants du voisin.
<em>(I talk to the neighbor's children => </em><em>aux</em><em> = </em><em>à les</em><em> enfants (plural) )</em>
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<em>EXPLANATION</em>
TO THE ►
- à + le = au <em>(contraction masculine singular)</em>
<em>(je parle au professeur = I talk to the teacher)</em>
- à la = feminine singular
<em>(je parle à la femme = I talk to the woman)</em>
- à + les = aux <em>(contraction masculine & feminine plural)</em>
<em> (je parle aux enfants, aux femmes = I talk to the children , to the women)</em>
- à l' = elision; Before a singular word beginning with a vowel or a mute "h"
<em>(je parle à l'enfant, à l'homme = I talk to the child, to the man)</em>
<em>-</em>
hope this helps ☺☺☺