Topics with о, об, and обо
Topic phrases use prepositional case; the preposition's shape responds to the following sound, not to adjective agreement.
- О is general, об appears before many vowel-initial words, and обо is restricted to certain clusters/pronominal forms. With an adjective, look at the adjective's initial sound.
| Form | Example | Sound environment |
|---|---|---|
| о | о но́вых кни́гах | before consonant |
| о | о ру́сских авторах | before consonant |
| об | об интере́сных иде́ях | before vowel |
| об | об изве́стных учёных | before vowel |
| обо | обо всех ва́жных дела́х | fixed facilitating form |
Read the model
3.08 · Topics with о, об, and обо · table 1
о · о но́вых кни́гах · before consonantо · о ру́сских авторах · before consonantMini-check
Choose: о/об интере́сных статьях. Choose: о/об но́вых иде́ях.
Apply this next
- Say the Russian examples aloud, cover the model, and retrieve the pattern once before continuing.