Breakdown of He eivät suostuisi huonoon suunnitelmaan.
he
they
huono
bad
ei
no / not (negative verb)
suunnitelma
plan
suostua
to agree, to consent
Questions & Answers about He eivät suostuisi huonoon suunnitelmaan.
Why doesn't suostuisi have a plural ending like -vat if the subject is "they"?
In the negative conditional, only the negative verb (eivät) gets the personal ending. The main verb just takes the conditional marker -isi without any personal ending. So it is eivät suostuisi, not "eivät suostuisivat".
Why are the words for "bad plan" in the illative case (huonoon suunnitelmaan) instead of the partitive or object case?
In Finnish, the verb suostua (to agree, to consent) requires the word you are agreeing to to be in the illative case (the "into" case). That is why both the adjective huono and the noun suunnitelma get the illative endings -on and -an.
How do we form suostuisi from the basic verb suostua?
To form the negative conditional, you take the vowel stem of the verb and add -isi. For suostua, drop the final -a to get the stem suostu-, and add -isi. Since u and i can sit next to each other, no vowels are dropped, making it suostuisi.
How exactly is the illative ending added to huono and suunnitelma here?
For many words ending in a short vowel, you form the illative by doubling the final vowel and adding -n. So huono becomes huonoon and suunnitelma becomes suunnitelmaan.
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