"Ti yw'r cyntaf."

Translation: You are the first.

[JamesTWils]

Why does "yw" come after the pronoun, while all of the other verbs come before it? Is it different from the other present indicative form of the verb to be?

[EllisVaughan]

This is an emphatic sentence so the important thing comes first. e.g Ellis dw i, Ti yw'r cyntaf, Nhw ydy'r rhai sydd yn gwneud y sŵn (They are the ones who are making the noise).