One of the pieces?

Think in terms of 'one piece' is missing. The verb is not affected by the prepositional phrase.

So with if it's pieces instead of piece?

Would it be one of the pieces are missing?

So if it's two...then it'll be two of the pieces are missing.?

pleasehelp So if it's two...then it'll be two of the pieces are missing?

Yes.

pleasehelpOne of the pieces is missing.

One of the piece is missing.

One of the pieces are missing.

Which is correct and why?

One of the pieces is missing.

One of the piece? Surely you're jesting. Why would you select one out of a group of one?

One are? Jesting again, right?

Not at all joking, these are sentences I found online...I'm just double checking them. I don't have a very solid background in English thus it leads to my insecurity w/ the language and inability to decide if others are right or wrong. So I ask a lot of very weird questions, I know..and it's not because I'm being a brat but only 'cause of how unsure I am.

I mean I can write up a storm

what's the difference between:

At least not until now and at least until now?

pleasehelpbecause I've never been taught English grammar

pleasehelpIt's really different when I speak it because it just comes out naturally.

Controversial pieces, you gave us. I doubt that person can speak naturally without any background.

She will return not until 5 p.m.

I didn't feel any guilt. At least not until now (I don't feel any guilt. I will perhaps fell at some point in future) / until now (Now I do feel guilty).

pleasehelpwhat's the difference between:

At least not until now and at least until now?

Why don't you try using them in sentences? I think that would help you understand the difference.

For example, what sorts of things could you put in the blanks here?

I've ........... -- at least not until now.
I'