Source: http://dcc.dickinson.edu/allen-greenough/Chapters/Chapter-438.html
Timestamp: 2019-04-23 12:16:34+00:00

Document:
438. The Subjunctive in general expresses the verbal idea with some modification1 such as is expressed in English by auxiliaries, by the infinitive, or by the rare subjunctive (§ 157. b).
An Exhortation or Command (Hortatory Subjunctive: § 439).
A Concession (Concessive Subjunctive: § 440).
A Wish (Optative Subjunctive: § 441).
A Question of Doubt etc. (Deliberative Subjunctive: § 444).
A Possibility or Contingency (Potential Subjunctive: § 446).
For the special idiomatic uses of the Subjunctive in Apodosis, see § 514 .
Condition: future or contrary to fact (§§ 516. b, c, 517).
These modifications are of various kinds, each of which has had its own special development (cf. § 436 ). The subjunctive in Latin has also many idiomatic uses (as in clauses of Result and Time) where the English does not modify the verbal idea at all, but expresses it directly. In such cases the Latin merely takes a different view of the action and has developed the construction differently from the English.

References: § 439
 § 440
 § 441
 § 444
 § 446
 § 514
 § 436