Gerunds and infinitives
http://www.englisch-hilfen.de/en/exercises_list/gerund_infinitiv.htm - explanation and practice
http://web2.uvcs.uvic.ca/elc/studyzone/410/grammar/gerinf.htm - explanation and fill in the gaps
http://web2.uvcs.uvic.ca/elc/StudyZone/410/reading/exercises/fitterqz.htm - type the correct sentence
http://eslus.com/LESSONS/GRAMMAR/GERUNINF/Gramb.htm - choose the best option
http://www.englishpage.com/gerunds/gerunds_infinitives_1.htm - choose the best answer
http://www.englisch-hilfen.de/en/exercises_list/gerund_infinitiv.htm - explanation and practice
http://web2.uvcs.uvic.ca/elc/studyzone/410/grammar/gerinf.htm - explanation and fill in the gaps
http://web2.uvcs.uvic.ca/elc/StudyZone/410/reading/exercises/fitterqz.htm - type the correct sentence
http://eslus.com/LESSONS/GRAMMAR/GERUNINF/Gramb.htm - choose the best option
http://www.englishpage.com/gerunds/gerunds_infinitives_1.htm - choose the best answer
http://www.ego4u.com/en/cram-up/tests/infinitive-gerund-1 - test your knowledge
http://www.slideshare.net/teachertelmafarias/gerund-and-infinitive - presentation - Portuguese/English
