Breakdown of Cieszymy się z twojego powrotu, dlatego że cię kochamy.
twój
your
kochać
to love
cię
you (sg.)
z
from (+ Genitive)
Questions & Answers about Cieszymy się z twojego powrotu, dlatego że cię kochamy.
Why do we use the preposition z and the Genitive case in z twojego powrotu?
The verb cieszyć się (to be happy) pairs with the preposition z to express what you are happy about. When used this way, it always forces the following noun phrase into the Genitive case. That is why the basic phrase twój powrót changes to z twojego powrotu.
What happened to the ó from the base word powrót?
Does dlatego że mean exactly the same thing as bo?
Yes, they both mean 'because' and can be used interchangeably in most everyday sentences. Dlatego że literally translates to 'for that, that' and sounds slightly more formal or complete, while bo is very short and conversational.
Why is cię used here instead of ciebie?
Cię is the short, unstressed form of the word 'you' in the Accusative case. We use it here because it is in the middle of a sentence and we are just stating a normal fact without special emphasis. You only use the longer form ciebie when you want to strongly emphasize 'you' (as in 'we love YOU, not someone else').