Conjunctions generally connect verbs of like moods and tenses; as, "If
thou sincerely _desire, and_ earnestly _pursue_ virtue, she _will_
assuredly _be found_ by thee, _and prove_ a rich reward."
NOTE 1. When different moods and tenses are connected by
conjunctions, the nominative must be repeated; as, "He _may return_,
but _he will_ not _tarry_."
2. Conjunctions implying contingency or doubt, require the
subjunctive mood after them; as, "_If_ he _study_, he will improve."
See pages 135, 145, and 155.
3. The conjunctions _if_, _though_, _unless_, _except_, _whether_,
and _lest_, generally require the subjunctive mood after them.
4. Conjunctions of a positive and absolute nature, implying no
doubt, require the indicative mood; as, "_As_ virtue _advances, so_
vice _recedes_."