4. IMPERATIVE, which express a command or an admonition; as,—

scrībe, write!

FORM OF INTERROGATIVE SENTENCES.

[162]. Questions may be either Word-Questions or Sentence-Questions.

1. Word-Questions. These are introduced by the various interrogative pronouns and adverbs, such as—quis, quī, quālis, quantus, quot, quotiēns, quō, quā, etc. Thus:—

quis venit, who comes? quam dīū manēbit, how long will he stay?

2. Sentence-Questions. These are introduced—

a) By nōnne implying the answer 'yes'; as,—

nōnne vidētis, do you not see?

b) By num implying the answer 'no'; as,—