According to sequence, the tense of the main verb determines the mood of the verb in the subordinate clause. The tense of the verb in the subordinate clause is governed by aspectual considerations. Sequence Tense of main verb Mood of verb in subord. Subordinate clauses Indirect speech Indirect speech is formed in several ways. In indirect speech the verb in these clauses has the same tense as the original statement and merely changes the person accordingly.
Indirect questions are also subject to the same principles.
Indirect speech and commands may also be introduced by an acc and inf construction. The tense of the inf is the same as the tense of the original verb. The other is to use the relative pronoun with the future indic. This clause is known as the protasis, while the main clause is called the apodosis. Conditional clauses 1.