29. An infinitive used to complete the meaning of another verb, serving
as a direct object to a transitive verb, is called a "complementary
infinitive". If the complementary infinitive is from a transitive verb,
it may itself have a direct object:

La knabo volas kuri, the boy wishes to run.
Birdoj sxatas kanti, birds like to sing.
La knabo volas havi cxevalon, the boy wishes to have a horse.
Ili volas trovi florojn, they wish to find flowers.


INTERROGATION.

30. An interrogative sentence is one which asks a question. Unless some
directly interrogative word (as "who," "when," "why," etc.) is used,
the sentence is rendered interrogative by use of the word "cxu". This
interrogative particle is placed at the beginning of a sentence, the
words of which are left in the same order as for a statement. Since
there is no inversion of order, there is no necessity for a word like
English "do" or "does," to introduce the verb:

Cxu la knabo estas bona? Is the boy good?
Cxu ili havas florojn? Have they flowers?
Cxu la kolomboj kantas? Do the doves sing? (Are the doves singing?)


THE CONJUNCTION "NEK".

31. In the expression "neither ... nor ...", the conjunction "nek"
is used for both words. Since an adjective modifier of two or more