#use of oblique moods in adverbial clauses
OF CONDITION
Suppositional (non-p) - Should he come, tell him to wait.
Subjunctive II- Were he to come, she would inform us.
OF CONCESSION
Subjunctive I or Suppositional (non-p)- Whatever the reason should be, the facts stay.
Subjunctive II- Even if they had wanted me to stay I should have refused.
OF COMPARISON, OF MANNER
Subjunctive II - His voice broke as if he were going to cry.
OF PURPOSE
Subjunctive I, Suppositional- He broke off lest he should say too much.
Suppositional (non-p) - Should he come, tell him to wait.
Subjunctive II- Were he to come, she would inform us.
OF CONCESSION
Subjunctive I or Suppositional (non-p)- Whatever the reason should be, the facts stay.
Subjunctive II- Even if they had wanted me to stay I should have refused.
OF COMPARISON, OF MANNER
Subjunctive II - His voice broke as if he were going to cry.
OF PURPOSE
Subjunctive I, Suppositional- He broke off lest he should say too much.