ZERO CONDITIONAL

Here you have a link with the explanation of the Zero Conditional and some time sentences, and an audio file to listen to the pronunciation

http://elcursoinglesonline.blogspot.com.es/2012/04/gramatica-ingles-zero-conditional.html

And here there's a link with some exercises.

http://perso.wanadoo.es/autoEnglish/gr.zero.i.htm