can, could, to be able to links to exercises
DESCRIPTION
exercisesTRANSCRIPT
CAN, COULD & TO BE ABLE TO
Theory
http://www.welcometoenglishandfun.com/grammar/pdf/CAN_COULD_AND.pdf
http://elblogdelingles.blogspot.com/2006/05/lesson-17-can-could-and-be-able-to.html
Practice
http://autoenglish.en.wanadoo.es/gr.can.i.htm
http://www.ompersonal.com.ar/omexercise/verbosmodales/unit15.htm
http://esl.about.com/library/quiz/blgrquiz_canbeable.htm
http://www.englishclub.com/grammar/verbs-modals_can_quiz.htm