1. Estoy segura que Uds. lo entenderán.
Indicative after expressions of certainty
El indicativo después de las expresiones de certeza.
Estoy segura que Uds. lo entenderán.

2. expressions of certainty followed by indicative
Indicative after expressions of certainty
Expressions of certainty are followed by a verb in the indicative mood (present indicative, preterite, imperfect, future).
Expressions of certainty indicate that in the speaker’s mind, the event described is a fact.
expressions of certainty
followed by indicative
Es cierto que José está bien informado.
It’s true that José is well-informed.

3. Indicative after expressions of certainty
Common expressions of certainty:
Claro que
Es cierto que
Es evidente que
Es obvio que
Está claro que
Estar convencido(a) de que

4. Indicative after expressions of certainty
Common expressions of certainty:
Estar seguro(a) (de) que
Me/Te/Le/Nos/Les parece que
No cabe duda (de) que
Por supuesto que
Sin duda alguna
Todo el mundo sabe que

5. expressions of negation/denial followed by subjunctive
Indicative after expressions of certainty
Remember to use the subjunctive when the main clause in a sentence expresses negation or denial.
expressions of negation/denial
followed by subjunctive
No es verdad que esa reportera sea imparcial.