Declension of pronouns

Personal pronouns

The н- after a preposition

Third-person pronouns gain an н- when a preposition governs them:

• яго кніга - his book, but у яго ёсць keeps the plain form because у here is the possessive construction
• да яго - to him; з ім - with him; пра яго - about him
• after most prepositions: ад яго, каля яе

The safest habit is to learn each preposition with a pronoun attached rather than to derive the rule.

Possessives decline like adjectives

мой, майго, майму, маім, маім; мая, маёй, маю, маёй; мае, маіх, маім, маімі. The feminine again has one form, маёй, doing four cases.

Яго, яе, іх never decline at all - one form for every case and gender.

Demonstratives and interrogatives

гэты, гэтага, гэтаму, гэтым and той, таго, таму, тым follow the adjective pattern. So do які and чый.

Хто and што have their own short paradigms: хто, каго, каму, кім and што, чаго, чаму, чым. Note that чаму is both the dative of што and the word for "why".