"The man eats a sandwich."
Translation:De man eet een boterham.
In the lesson notes it mentions I is just the [verb stem], he/she/it/you? is [verb stem]+t and plurals/etc are the infinitive of the verb.
Is the extra "e" added to the front of eten because it has so few letters or because et is already used? Are the exceptions to this rule few-and-far-between?
It seems pretty straightforward otherwise.