Conditional Tense

1. When to Use?
- the conditional is used to express probability, possibility, wonder or conjecture, and is usually translated as would, could, must have or probably

 1) To express speculations about the past
 2) To express the future from the perspective of the past
 3) To express hypothetical actions or events which may or may not occur
 4) To indicate what would happen were it not for some certain specific circumstance
 5) For polite use to soften requests
 6) To ask for advice
 7) For reported speech
 8) To express what would be done in a particular situation


2. How to Form?
- To conjugate regular -ar, -er and -ir verbs in the conditional, simply add one of the following to the infintive:
     ía       íamos
     ías
     ía       ían


 ex.                                     
      hablaría     hablaríamos               comería      comeríamos
      hablarías                                    comerías
      hablaría     hablarían                   comería       comerían

 ex.  El alumno dijo que estudiaría una hora más.
                              -   The student said that he would study one more hour.
       ¿Qué hora sería?            -   What time could it have been?
       Estaría en su casa.          -   He must have been at home.

3. Irregulars
  :The same twelve common verbs that are irregular in the future tense are also irregular in the conditional tense. Their endings are regular, but their stems change in the same way they change in the future tense.


 ex. caber  -  yo cabría
       poner  -  yo pondría
      decir    -  yo diría
      haber   -  yo habría
      salir     -  yo saldría
      hacer   -  yo haría
      poder   - yo podría
      tener    -  yo tendría
      querer  -  yo querría
      valer    -   yo valdría
      saber    -  yo sabría
      venir     -  yo vendría