See the notes for the sections on 'Present Tense' and 'Wanting'.

The pattern with eisiau is exceptional. It is a cut-down form of a longer pattern about 'having a want' - all that is left is dw i (I am) and eisiau (a want), leaving us with Dw i eisiau..., Dych chi eisiau..., etc - 'I want.., You want..., etc.'

The more usual pattern is to link dw i etc with hoffi, mynd, dod, etc (liking, going, coming, etc) using the linking word yn/'n:

• Dw i'n hoffi... - I like...
• Dw i'n mynd... - I go, I'm going

yn/'n is not actually translated into English in that kind of sentence.

Nothing.

Duo is likely to suggest dw i'n moyn as the correct version if you make the mistake of writing * dw i'n eisiau.

eisiau is used all over Wales in the colloquial language (often pronounced as one of ishe, isha, isho in various areas), whereas moyn is more of a south and south-west Wales word, although it will be understood everywhere.

No. There is no mutation of adjectives following plural nouns. dillad is a plural noun.

Adjectives do take a soft mutation following singular feminine nouns.