34. The subject of an imperative is seldom expressed unless it is emphatic.
The subject, when expressed, may precede the imperative: as,—You go, You read ([p. 117]).
35. The subjunctive mood is used in certain special constructions of wish, condition, and the like (pp. 115, 118).
For particulars and examples, see [pp. 119–123].
For modal auxiliaries, see [pp. 124–132].
36. An infinitive, with or without a complement or modifiers, may be used as the subject of a sentence, as a predicate nominative, or as an appositive (pp. 134, 135).
37. An infinitive may be used as the object of the prepositions but, except, about, ([p. 135]).
38. The infinitive may be used as a nominative of exclamation ([p. 136]).
39. An infinitive may modify a verb by completing its meaning, or by expressing the purpose of the action ([p. 137]).
40. An infinitive may be used as an adjective modifier of a noun or as an adverbial modifier of an adjective.