The first thing one has to understand about the subjunctive is that it is used when the sentence has a nuance of desire, hope, wishes, suggestions, etcetera. Thus, whenever we have a sentence where the main idea expresses one of these aspects, it's very likely that the subjunctive will be used in the sentence.
Uses of the Subjunctive
- To express wishes or hopes
Use the subjunctive to express wishes or hopes to other people.