Help with infinitives
If you got this far maybe you don't need much help, but these links proved useful to me. Hope someone else can use them.
http://www.studyspanish.com/lessons/ira.htm Ir a + infinitive
ir a + infinitive = to be going to do something (in the near future). We studied this in the Phrasal Future block.
http://www.studyspanish.com/lessons/acabarde.htm acabar de + infinitive = to have just done something (in the very recent past)
http://www.studyspanish.com/lessons/tenque.htm Tener que + infinitive is one way to express obligation or necessity. This expression can be translated as "someone has to do something."
http://www.studyspanish.com/lessons/tenque.htm Hay que + infinitive is used to express the idea of "one must do something" or, "it is necessary to do something." It is a more general expression and since there is no subject, the verb form hay is always used. If you are studying French this is similar to 'il faut'.
http://www.studyspanish.com/lessons/volvera.htm volver a + infinitive = to do something again
http://spanish.yabla.com/lessons.php?lesson_id=197 deber de + infinitive
when we want to express an obligation or a responsibility we use the verb deber followed by the infinitive of the verb denoting the action that we must carry out.