3 Her goodly port, and to their senses vile
port > rank, social station
4 Her gentle speech applied, that in short space
gentle > gracious, courteous; noble; gentle applied > directed that > [so that] space > time
5 She grew familiar in that desert place.
familiar > {On a family footing} desert > lonely
6 During which time the churl, through her so kind
churl > rustic, boor
7 And courteous use, conceived affection base, 8 And cast to love her in his brutish mind;
cast > resolved