Answer:
Ammonia, when in solution with water, contains NH3(aq), a weak base, and is able to react fully with strong acid (H+aq or H3O+aq) to form ammonium ions (NH4+aq).
NH3(aq) + H3O+aq --> NH4+aq + H2O
It can also partially react with water (a very weak acid) to form very few ammonium ions and hydroxide ions:
NH3(aq) + H2O <---> NH4+aq + OH-aq
[By the way: in these reactions you've been shown that ammonium hydroxide, as compound, does not really exist. They are separate ions in solution]