Questions & Answers about Milloin me palaamme Lontooseen?
Why does Lontoo take the -seen ending here?
This is the illative case, which shows motion towards a place (returning 'into' London). Because the word Lontoo ends in two of the same vowels, it takes the longer -seen ending instead of the shorter -hVn ending.
In English we say returning 'to' London. Where is the word for 'to' in the Finnish sentence?
Finnish doesn't use a separate preposition for this. The 'to' or 'into' meaning is built right into the word Lontooseen by adding the illative case ending to the destination.
The verb is palaamme, but its dictionary form is palata. Why does it change so much?
Palata (to return) is a Type 4 verb, which means it ends in a vowel followed by -ta or -tä. To conjugate it, you drop the -ta, add an extra -a-, and then add the personal ending. So, pala- + a + -mme becomes palaamme.
Do I have to include the word 'me', or could I just say 'Milloin palaamme Lontooseen'?
You can absolutely drop the word me! In Finnish, the verb ending -mme already makes it perfectly clear that the subject is 'we', so the pronoun is optional and often left out in everyday speech.