The use of in a sentence
When I have sentences that start with 'To believe that', 'To opiniate that', 'it is true that', or 'to think that', it is clear that I need to use the subjunctive in my sentence. But when it is ' To not believe that', 'It is not true that', or ' I do not think that', I need to use the indicative in my sentence.
With phrases like 'It is possible that', 'It is probable that', and 'It is impossible that', when I add a no in front of the phrase, does it become indicative or not?