Partitive Case
Partitive case: after numbers, mass nouns, negation, -a/-ä/-ta/-tä
I can use partitive for quantities, substances, and negation.
Look at these examples. Can you spot the grammar pattern?
Haluan kaksi kahvia.
I want two coffees.
En ymmärrä suomea.
I don't understand Finnish.
Juon maitoa joka aamu.
I drink milk every morning.
Luen kirjaa.
I am reading a book.
Pay attention to the highlighted parts. What do they have in common?
Partitive Case
The most common Finnish case after nominative. Used after numbers, with mass nouns, in negation, and for ongoing actions. Endings: -a/-ä (after vowels) or -ta/-tä (after consonants, long vowels, diphthongs).
Key uses: (1) after numbers: kaksi koiraa, (2) mass nouns: juon kahvia, (3) negation: en näe koiraa, (4) ongoing action: luen kirjaa.
Using nominative instead of partitive in negation. Wrong partitive ending (-a vs -ta). Forgetting partitive with numbers.
Common Error Patterns
Using nominative instead of partitive
Check: after numbers, in negation, mass nouns, or ongoing action → partitive.
Wrong partitive ending (-a vs -ta)
After short vowel: -a/-ä. After consonant/long vowel/diphthong: -ta/-tä.
Haluan kaksi kahvia.
I want two coffees.
After numbers: kaksi + partitive (kahvia). NOT kaksi kahvit!
En ymmärrä suomea.
I don't understand Finnish.
Negation triggers partitive: suomi → suomea. Object in negative = always partitive.
Juon maitoa joka aamu.
I drink milk every morning.
Mass noun (maito = milk) takes partitive: maitoa. Uncountable = partitive.
Luen kirjaa.
I am reading a book.
Ongoing action: partitive (kirjaa). Compare: Luin kirjan = I read the book (completed, accusative).
Practice in course
Apply this grammar in A1 course exercises