Multiples, Collectives, and Distributives.
Multiple Numbers are formed from the Cardinals by adding the suffix -obl, with the requisite grammatical ending o, a, or e. Thus: duobla, double; duoblo, a double; duoble, doubly; tridekoble, thirty-fold; sesoble naŭ estas (or faras) kvindek kvar, six nines are fifty-four; duoble du estas kvar, twice two are four.
Collective Numerals are formed by the addition of the suffix -op (plus the grammatical termination required). Thus: duope, two at a time, two together; naŭope, nine at a time; ili venadis dekope, they came in tens; dumilopa taĉmento, a detachment two thousand strong.
Distributives are shown by the preposition po, meaning at the rate of. Thus: li aĉetis por ĉiu infano po ses pomoj, he bought six apples for each child; li ricevas po dek ŝilingoj por ĉiu tago, he gets ten shillings a day; la vagonaro veturas po sesdek mejloj en ĉiu horo (or ĉiuhore), the train travels at (the rate of) sixty miles an hour, etc.
The Pronoun.
The Personal Pronouns are, in the nominative: Mi, I; vi, you (sing. and pl.); ni, we; li, he; ŝi, she; ĝi, it; ili, they.
The archaic English thou may be translated by ci.
The Accusative case of the personal pronouns is formed like that of nouns and adjectives, by adding -n. Thus: Min, me; vin, you; nin, us; lin, him; ŝin, her; ĝin, it; ilin, them.
The Reflexive Pronoun of the 3rd person is si (accusative sin), standing for himself, herself, itself, one's-self, or themselves, as the case may be. There is no special reflexive form for the pronouns of the 1st and 2nd person, I, we, and you.
The Indefinite Personal Pronoun is oni (= the French on)—one, people, they, you. Ex.: Li amas sin, he loves himself; ŝi amas sin, she loves herself; ĝi montras sin, it shows itself; ili diras al si, they say to themselves; oni vidas sin, one sees one's-self; mi lavas min, I wash myself; vi laŭdas vin, you praise yourself.