Here's how it works:
* In the present tense, the -er verbs in French change their ending depending on the subject pronoun**.
* For the third-person singular (he, she, it), the verb "voir" becomes "voit".
Here's an example:
* Je vois (I see)
* Tu vois (You see)
* Il voit (He sees)
* Elle voit (She sees)
* On voit (One sees)
* Nous voyons (We see)
* Vous voyez (You see)
* Ils voient (They see)
* Elles voient (They see)
So, yes, you add an "e" to the verb "voir" when the subject is female, like "elle" or "elles".
This is a common grammatical rule in French verbs, so it's important to learn and apply it!