Next: Marginal Modal dare
Under the category of semi-auxiliaries, we have placed several verbs that do
not seem to closely follow the behavior of auxiliaries. One of these
auxiliaries, dare, mainly behaves as a modal and selects for the base
form of the verb. The other semi-auxiliaries all select for the infinitival
form of the verb. Examples of this second type of semi-auxiliary are used to, ought to, get to, have to, and BE to.