Zero, First and Second Conditionals

Conditional	Time Frame	Probability	Example
First Conditional	Future	Possible	If I meet Helen, I will invite her to the party.
Second Conditional	Future	Unlikely	If I won the lottery, I would help the world.
Second Conditional	Present	Unreal/ Imaginary	If I had the money, I would lend it to you.

EXERCISES ONLINE

http://www.perfect-english-grammar.com/first-conditional-exercise-1.html

http://www.perfect-english-grammar.com/second-conditional-exercise-1.html

http://www.perfect-english-grammar.com/zero-conditional-exercise-1.html

http://www.esl-lounge.com/student/grammar/3g18-first-second-conditional-exercise.php

https://www.english-area.com/paginas/Firstandsecondconditional.htm

http://wwwedu.ge.ch/cptic/prospective/projets/anglais/exercises/condit1.htm

http://speakspeak.com/english-grammar-exercises/intermediate/first-versus-second-conditional

https://www.ego4u.com/en/cram-up/tests/conditional-sentences-2

https://elt.oup.com/student/englishfile/intermediate/a_grammar/file04/nef_int_grammar04_b02?cc=global&selLanguage=en

http://www.agendaweb.org/verbs/conditional-verbs-exercises.html

http://www.agendaweb.org/verbs/conditional-first-exercises.html

http://www.agendaweb.org/verbs/conditional-first-esl-exercises.html

http://www.agendaweb.org/verbs/conditional-second-exercises.html

http://www.agendaweb.org/verbs/conditional-second-esl-exercises.html


GAMES 

http://www.eslgamesworld.com/members/games/ClassroomGames/Billionaire/Conditionals%20Billionaire%20Game/index.html