meā interest quandō veniās, I am concerned as to when you are coming.
3. The degree of concern is denoted—
a) by the Genitive (cf. [§ 203], 3): magnī, parvī, etc.; as,—
meā magnī interest, it concerns me greatly.
b) by the Adverbs, magnopere, magis, maximē, etc.; as,—
cīvium minimē interest, it concerns the citizens very little.
c) by the Neuters, multum, plūs, minus, etc.; as,—
multum vestrā interest, it concerns you much.
4. Rēfert follows interest in its construction, except that it rarely takes the Genitive of the person. Thus:—
meā rēfert, it concerns me;