128 ITALIAN GRAMMAR Note that there is no 3d person of the imperative in Italian. When the 3d person is needed, it is borrowed from the present subjunctive. Note also thai the larger part of the verbs of the 3d conjugation add -isc to their stem in the 2d person singular (see § 30). 92. Imperative of essere and avere SING, sii be abbi have PLTTK. siamo let us be abbiamo let us have siate be abbiate have 93. Imperative of the Four Irregular Verbs of tlie 1st Conjugation SING, va* go, etc. da' give, etc. fa* do, etc. sta' be, etc PLTJB. andiamo diamo facciamo stiamo andate date fate state 94. Negative Imperative non comprare do not buy non compriamo let us not buy non comprate do not buy A peculiarity of the imperative is that the negative form of the 2d person singular is made by non and the infinitive. 95. Hours of the Bay £ Puna. It's one o'clock (A.M,). Sono le tredxci. It's one o'clock (P.M.). la Italy it is customary to count the hours from midnight to midnight, and therefore the hours after noon are counted from 12 to 24. The numeral indicating the time is pre- ceded by the definite article, and both article and verb agree wiit ora, kmart or ore, understood.