videos

www.youtube.com/watch?v=_gycqAJcDFM
https://www.youtube.com/watch?v=Ilxjo5RlzFc
https://www.youtube.com/watch?v=EpQ-YgML6NM
//www.youtube.com/watch?v=gBLSVwSSNSA
//www.youtube.com/watch?v=aY4B1wSEqlY
//www.youtube.com/watch?v=owclQ5NdAEs

exercices 10°

http://www.learnenglish-online.com/grammar/tests/zeroconditional.html
http://www.english-grammar-lessons.com/type0/exercise1.swf
http://www.english-grammar-lessons.com/type0/exercise2.swf
http://www.english-grammar-lessons.com/type0/exercise3.swf
http://www.esl-lounge.com/student/grammar/2g42-what-do-you-do-if.php
http://www.my-english.edu.pl/index.php?id=67