R10 ‘If’ in Manx
There are two words in Manx for ‘if’, my and dy. We use my if something is possible or likely:
My t’eh fliugh, s’cummey - If it is wet, it doesn’t matter.
My v’eh kiart, nee’m goaill yindys - If he was right, I’ll be surprised
My vees eh feayr, beemayd goit - If it is cold, we’ll be stuck (‘If it will be cold....’)

We use dy (with conditional tenses) if something is impossible or very hypothetical:
Dy beagh Ealee ayns shoh, yinnin ginsh jee -If Ealee were here, I’d tell her.
Dy jinnagh oo snaue dys America, yinnin cur millioon punt dhyt - If you swam to America, I’d give you a million pounds.

The negative for both my and dy is mannagh:
Mannagh vel eh fliugh, bee’m bwooiagh - If it isn’t wet, I’ll be glad.
Mannagh row eh kiart, s’cummey - If he wasn’t right, it doesn’t matter.
Mannagh vees eh feayr, bee eh feer vie - If it isn’t cold, it’ll be very good.(‘If it will not be cold, ...’)

Mannagh jinnagh oo shen, veign bwooiagh - If you didn’t do that, I’d be glad.

Note that Dy row ... does NOT mean ‘If ... was/were ...’!
Dy row Fenella ayns shoh! - If only Fenella were/was here!
Dy beagh Fenella ayns shoh, veign maynrey - If Fenella were here, I’d be glad.