What is up with the "-то" series of expressions in Russian?

Open Forum
1

I am looking for a “fit all” explanation (if possible) for the group of expressions that take “-то” as a suffix, like кто-то, что-то, etc…

2

Check this out, it may help a bit.

3

Here’s another link if you need it: What Makes Russian Pronouns Indefinite

4

Oh my gosh!! This web site was the first one I used when I first started to study Russian 15 years ago! I couldn’t remember where I found it and for a while a thought it was offline. Thanks :wink:

5

Yes, the site is good.
You can use also my lesson here in lingq.com about these particles:
Login - LingQ

6

Why am I not surprised that you have a lesson for that? :smiley: Thanks, it is very good!