This section discusses main verbs that may take bare infinitival clauses as their complement, such as the modal verb moeten'must' or the perception verb zien'to see' in (596); the bare infinitival complements of these verbs are in italics. That the italicized phrases function as complements of the verbs moeten and zien is clear from the fact illustrated in the primed examples that they can be pronominalized.

The constructions given in the primeless examples in (596) exhibit monoclausal behavior. First, the fact illustrated in the primeless examples in (597) that the verbs moeten and zien are able to split their infinitival complement if they are in clause-final position shows that there is verb clustering: the percentage sign indicates that permeation of the clause-final verb cluster is possible in certain southern varieties of Dutch only. Second, the primed examples show that these constructions exhibit the infinitivus-pro-participio (IPP) effect in the perfect tense.

Although all of this may seem relatively straightforward, it is not always immediately clear whether or not a specific verb actually takes a bare infinitival clause as its complement. The reason is that bare infinitives do not always head an infinitival clause but can also be used as heads of bare-inf nominalizations. The examples in (598) show that this holds especially if the infinitive is monadic or takes an indefinite nominal complement; bare-inf nominalizations with definite nominal complements are normally less felicitous. We refer the reader to Section N1.3.1 and Section N2.2.3 for a detailed discussion of nominalization.

As a result of these two uses of bare infinitives, it may sometimes be impossible to tell at face value whether a certain main verb takes a bare infinitival clause or a bare-inf nominalization as its complement. Section 5.2.3.1 will therefore start by discussing constructions with the verb leren'to learn/teach', which may be ambiguous if they contain a bare infinitive, and argue that verbal and nominal bare infinitives differ systematically as indicated in Table (599); these properties can therefore be used as tests to determine the categorial status of bare infinitives.

After having established the characteristic properties of bare infinitival complement clauses, we will continue with the discussion of a number of subclasses of verbs that (potentially) may take a bare infinitival clause as their complement. Apart from leren in (600a), this section will also discuss the verb classes in (600b-e).