Optativo Passado (Henry Purcell)

Do seu poema de nome 'Henry Purcell', em honra do epónimo, Gerard Manley Hopkins comenta:

‘“Have fair fallen.” Have is the sing. imperative (or optative if you like) of the past, a thing possible and actual both in logic and grammar, but naturally a rare one. As in the 2nd pers. we say “Have done” or in making appointments “Have had your dinner beforehand”, so one can say in the 3rd pers. not only “Fair fall” of what is present or future but also “Have fair fallen” of what is past. The same thought (which plays a great part in my own mind and action) is more clearly expressed in the last stanza but one of the Eurydice, where you remarked it." 1883.

A estrofe a que ele se refere é a seguinte:

And the prayer thou hearst me making
Have, at the awful overtaking,
    Heard; have heard and granted
Grace that day grace was wanted.

The Loss of the Eurydice