The indicative mood shows that the speaker considers the action or state denoted by the predicate as a real fact [1; 2; 5; 9].
- “Mrs. Green, isn’t it true you are having an affair with Clinton Jackson and have been for many months?”/Olivia Goldsmith Young Wives/
- I knew Gina had discussed it with him, had tried to explain why it was happening and what it would mean. /Tony Parson Man and Wife/
The indicative mood is widely used in Modern English. It may denote action with different time-references, therefore the indicative mood has a wide variety of tense and aspect forms in the active and passive voice.