When to use subjunctive
When there is subject change and the act is hypothetical or anticipated
When don’t use subjunctive
No subject change or it is completed, habitual or factual
Conjugations of time
Cuando Después de que Hasta que En cuento Tan pronto combo
Cuando
When
Don’t need subject change
Al
Upon
Always followed by infinitive
Exceptions
En cuento (until)
Tan pronto como (as soon as)
Never uSes infinitive
Use indicative when
The action that follows has already taken place or it occurs regularly
Can you use imperfect subjunctive
NOT FOR CONJUGATIONS OF TIME
Present tense shows
Routine habitual
Indicative
Future tense shows
Anticipation
Subjunctive
Past tense shows
Completed or factual
Indicative