Breakdown of Täytyy mennä ulos, jotta saa raitista ilmaa.
mennä
to go
ulos
out
täytyä
to have to
saada
to get
Questions & Answers about Täytyy mennä ulos, jotta saa raitista ilmaa.
Why is there no pronoun before täytyy?
This sentence uses the generic zero-person construction. By leaving out the subject and just using the 3rd person singular verb täytyy, it translates to 'one must' or a general 'you have to'. If it were specific to you, it would be sinun täytyy.
How does the zero-person structure work in the second clause (jotta saa)?
Just like with täytyy, the verb saa (gets) is in the 3rd person singular with no subject. It literally means 'so that one gets'. In English, we often translate this as 'so that you get' using a generic 'you'.
What is the difference between jotta and että here?
Jotta means 'so that' or 'in order to', expressing purpose. Että simply means 'that'. If you used että, it wouldn't clearly express that getting fresh air is the reason you must go outside.
Why is raitista ilmaa in the partitive case?
Air is an uncountable mass noun, and you are getting an unspecified amount of it. Because of this, both the adjective raitis (fresh) and the noun ilma (air) take the partitive case, becoming raitista ilmaa.