5. A concession,--supposed, not given as a fact: [Though he be my enemy, I
shall pity him].

6. A possibility: [We fear lest he be too late].

The tenses of the subjunctive require especial notice. In conditional
clauses, the _present_ refers either to present or future time: [Though
the earth be removed, we shall not fear].

The _preterite_ refers to present time. It implies that the supposed case
is not a fact: [If he were here, I should be much pleased].

The _pluperfect_ subjunctive expresses a false supposition in past time:
[If you had been here, this would not have happened].

The phrases with _may, might, can, must, could, would_, and _should_ are
sometimes called the _potential mode_, but the constructions all fall
within either the indicative or the subjunctive uses, and a fourth mode is
only an incumbrance.

+65. The Imperative Mode.+--The imperative is the mode of command and
entreaty. It has but one form for both singular and plural, and but one
tense,--the present. It has but one person,--the second. The subject is
usually omitted. The case of direct address, frequently used with the
imperative, should not be confused with the subject. In, "John, hold my
books," the subject is _you_, understood. Were _John_ the subject, the
verb must be _holds_. _John_ is, here, a compellative, or vocative.

+66. Voice.+--Verbs are said to be in the _active_ voice when they
represent the subject as acting, and in the _passive_ voice when they
represent the subject as being acted upon. Intransitive verbs, from their
very nature, have no passive voice. Transitive verbs may have both voices,
for they may represent the subject either as acting or as being acted
upon.

The direct object in the active voice generally becomes the subject in the
passive; if the subject of the active appears in the passive, it is the
object of the preposition _by_: [My dog loves me (active). I am loved by
my dog (passive)].

Verbs of calling, naming, making, and thinking may take two objects
referring to the same person or thing. The first of these is the direct
object and the second is called the objective complement: [John called him
_a coward_]. The objective complement becomes an attribute complement when
the verb is changed from the active to the passive voice: [He was called
_a coward_ by John].

Certain verbs take both a direct and an indirect object in the active:
[John paid him nine _dollars_]. If the indirect object become