Hi, I’d like to ask about the use of os in sentences like
I don’t know if that’s the best thing to do
which as far as I was informed could be said as
Dw i ddim yn gwbod ai dyna ydy’r peth gorau i’w neud.
In the course it’s (North version)
Dw i ddim yn gwbod os mai dyna ydy’r peth gorau i’w neud.
This is a sentence from Level 2, but I’m more than sure if was used in the sense of ‘‘Do you know if (it’s interesting)’’. Not in a conditional sense like ‘’ I’m going to do it if I finish on time ‘’. The first sentence can use a while the conditional if uses os.
I understand we learn only os to make things simpler? I’m currently somewhere in the middle of course 2, maybe that distinction is explained later on?
[EDIT] Sorry if it should have gone to the Tiny questions thread, I haven’t used the forum much so far.